LAPORAN AKHIR
PROFIL KOMODITAS KUBIS
Witono Adiyoga Mieke Ameriana Rachman Suherman T. Agoes Soetiarso Budi Jaya Bagus Kukuh Udiarto Rini Rosliani Darkam Mussadad
BALAI PENELITIAN TANAMAN SAYURAN PUSAT PENELITIAN DAN PENGEMBANGAN HORTIKULTURA BADAN PENELITIAN DAN PENGEMBANGAN PERTANIAN
DEPARTEMEN PERTANIAN 2004 1
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I. Pendahuluan Kubis memiliki nama ilmiah Brassica oleracea. Dalam dunia tumbuhan, kubis diklasifikasikan sebagai berikut: a. Divisi : Spermatophyta b. Subdivisi : Angiospermae c. Kelas : Dicotyledonae d. Famili : Brassicaceae e. Genus : Brassica f. Species : Brassica oleracea. Kubis merupakan kelompok tanaman yang dikenal sebagai cole crops. Kata "cole" berasal dari kata “col” di Middle English. Orang Romawi menyebut tanaman ini sebagai "caulis" , sedangkan orang Yunani menyebutnya sebagai "kaulion" . Kesemua kata tersebut pada dasarnya berarti batang. Kelompok tanaman ini meliputi kubis, kubis bunga, brokoli, kale, collards, kohlrabi, dan Brussels sprouts . Tanaman cole liar cole liar banyak ditemukan tumbuh di sepanjang pantai Mediterania dan Atlantik, Eropa. Kubis dan kale berasal kale berasal dari Eropa Barat, sedangkan kubis bunga dan brokoli berasal dari wilayah Mediterania. Kubis dan kale merupakan tanaman pertama dari kelompok ini yang didomestikasi, kira-kira 2 000 tahun yang lalu. Sebelum didomestikasi, kedua tanaman ini dikumpulkan dari daerah liar dan digunakan terutama sebagai tanaman obat atau medisinal herbal. Bentuk-bentuk liar kubis ditemukan sepanjang pantai-pantai Laut Tengah dan atau Jazirah Asia Kecil atau Turki yang kemudian berevolusi menjadi bentuk-bentuk yang dibudidayakan pada saat ini. Semua tanaman cole bersifat interfertile (dapat disilangkan) dan banyak pula yang self-incompatible (bunga self-incompatible (bunga tidak dapat difertilisasi oleh polen yang berasal dari tanaman yang sama). Karakteristik ini mempermudah upaya untuk melakukan seleksi jenis tanaman cole yang baru. Self-incompatibility juga menyebabkan produksi benih hibrida cenderung ekonomis. Introduksi tanaman kubis ke Indonesia tidak diketahui secara pasti sejak kapan. Kubis dwi musim sudah ada sejak sebelum Perang Dunia II, ditanam di daerah pegunungan dan benihnya selalu didatangkan dari luar negeri, khususnya Netherland. Varietas kubis yang terkenal pada saat itu adalah RvE (Roem ( Roem van Enkhuizen ). ). Bagi petani yang menemukan kesulitan untuk mendapatkan benih, biasanya menanam kubis dari stek, sehingga dikenal sebagai kubis stek (Argalingga, Majalengka dan Dieng, Wonosobo). Sampai saat ini kubis stek masih dapat ditemui di daerah Dieng, sedangkan di Argalingga sudah atau hampir punah. Kubis yang dibudidayakan di Indonesia ada dua jenis, yaitu (1) Jenis semusim (annual type ) – tipe kubis yang dapat tumbuh, berkrop, berbunga dan berbiji di daerah tropis pada umumnya dan Indonesia pada khususnya, tanpa memerlukan periode pendinginan terlebih dahulu; (2) Jenis dwi musim ( biennial type ) – dapat tumbuh di daerah tropis namun tidak dapat berbunga secara alami karena tidak adanya musim dingin panjang untuk merangsang pembungaannya. Jenis dwi musim
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secara alami. Dengan demikian, budidaya kubis di Indonesia memiliki ketergantungan yang sangat tinggi untuk memenuhi kebutuhan benih dari pasar impor.
II. Area, produksi dan produktivitas Data terakhir dari FAO (2004) menunjukkan bahwa produksi kubis dunia pada tahun 2004 mencapai 68 389 593 ton dan diusahakan pada luasan lahan sekitar 3 214 105 hektar (Tabel 1). Perkembangan terakhir juga menunjukkan bahwa China adalah Tabel 1
Areal panen, produksi dan produktivitas kubis dunia serta lima negara penghasil terbesar 2000
Dunia
A (ha) P (t)
China
3 066 269
3 187 864
3 242 105
58 783 149
60 781 249
61 515 476
66 837 584
68 389 593
20,98
20,03
20,06
20,97
21,09
1 220 265
1 485 684
1 571 113
1 624 310
1 669 450
P (t)
23 148 800
25 262 396
28 078 001
30 584 911
32 601 000
Y (t/ha)
18,97
A (ha)
A (ha)
18,83
19,53
260 000
280 000
280 000
5 910 000
5 510 000
5 680 000
5 800 000
6 000 000
22,73
22,04
21,85
20,71
21,43
174 130
172 520
172 330
176 460
178 000
3 491 820
3 855 530
3 651 850
4 440 570
4 500 000
A (ha)
17,87
250 000
Y (t/ha)
P (t)
17,00
260 000
Y (t/ha)
P (t)
Indonesia
2004
3 033 996
A (ha)
USA
2003
A (ha)
P (t)
Russian Fed.
2002
2 801 396
Y (t/ha)
India
2001
20,05
22,35
21,19
25,16
25,28
109 880
105 000
103 180
105 480
105 480
2 598 690
2 491 660
2 371 330
2 433 110
2 450 000
Y (t/ha)
23,65
99 289
23,73
89 439
22,98
96 405
23,07
95 729
23,23
95 729
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negara produsen kubis terbesar di dunia dengan kontribusi sekitar 47%, diikuti oleh India (9%), Federasi Rusia, Amerika Serikat, termasuk Indonesia. Indonesia termasuk ke dalam lima negara terbesar produsen kubis dunia ditinjau dari luas areal panen dan produksi totalnya. Namun demikian, produktivitas kubis di Indonesia bahkan masih lebih rendah dibandingkan dengan rata-rata produktivitas kubis dunia. Sementara itu, produktivitas kubis di empat negara produsen lainnya ternyata juga masih belum optimal. Berikut ini adalah beberapa negara yang produktivitas kubisnya jauh melampaui produktivitas kubis di lima negara produsen kubis terbesar. Dalam lima tahun terakhir secara konsisten produktivitasnya:
•
> 30 t/ha
•
> 40 t/ha > 50 t/ha
•
: Australia, Cyprus, Republik Ceko, Honduras, Mexico, Netherlands, Selandia Baru, Norwegia, Palestina, Polandia, Slovenia, Afrika Selatan dan Spanyol : Austria, Belgia, Jepang, Kuwait, Swedia dan Uzbekistan Uzbekistan : Jerman, Irlandia, Korea Utara dan Saudi Arabia
Selama periode 1995-2003, luas areal panen kubis di Indonesia cukup berfluktuasi, yaitu antara 69 815 hektar pada tahun 1996 dan 59 207 hektar pada tahun 2001. Sementara itu, produktivitas kubis pada periode waktu yang sama juga menunjukkan fluktuasi dengan kisaran yang relatif sempit, yaitu terendah pada tahun 2001 sebesar 20,4 ton/ha dan tertinggi pada tahun 1995 sebesar 24,7 ton/ha. Dengan demikian, produksi kubis tahunan di Indonesia cenderung bervariasi dengan catatan tertinggi pada tahun 1995 sebesar 1,625 juta ton, dan terendah pada tahun 2001 sebesar 1,205 juta ton. Table 3 Tahun
Produksi kubis di Indonesia, 1995-2003 Luas Panen (ha)
Produksi (t)
Produktivitas (t/ha)
1995
65,820
1,625,227
24.7
1996
69,815
1,580,408
22.6
1997
64,990
1,338,507
20.6
1998
69,150
1,459,232
21.1
1999
65,352
1,447,910
22.2
2000
66,914
1,336,410
22.4
2001
59,207
1,205,404
20.4
2002
60,235
1,232,843
20.5
2003
64,520
1,348,433
20.9
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Secara agregat, produktivitas kubis di Indonesia selama periode 1995-2003 mencapai rata-rata 21,7 t/ha. Untuk periode yang sama, pencapaian ini ternyata setara dengan produktivitas rata-rata kubis dunia (132 negara), yaitu ± 20 t/ha. Berkaitan erat dengan tingkat adaptabilitasnya, pertanaman kubis di Indonesia tersebar terutama di daerah dataran tinggi. Berdasarkan data produksi dan areal tanam, pertanaman kubis tercatat di 28 propinsi, kecuali Bangka Belitung dan DKI Jakarta. Tabel 4 menunjukkan perkembangan areal tanam dan produksi berdasarkan propinsi penghasil kubis, serta data agregatnya. Empat sentra produksi kubis utama di Indonesia berturut-turut adalah Jawa Barat, Jawa Tengah, Sumatera Utara dan Jawa Timur. Keempat sentra produksi tersebut menyumbang 80.4% dari total areal panen dan 80.5% dari produksi total tahun 2003. Walaupun dikembangkan pada agroekosistem yang relatif sama, produktivitas yang dicapai oleh setiap propinsi ternyata cukup beragam. Hal ini mengindikasikan adanya perbedaan intensitas pengelolaan antar sentra produksi yang biasanya tercermin dari perbedaan kualitas dan/atau kuantitas masukan yang digunakan. Tabel 4
Areal tanam (ha), produksi (ton) dan produktivitas (ton/ha) kubis di Indonesia, 1998-2002
Propinsi
Aceh
1999 Area (ha) Prod (t) Prvt (kwt/ha)
2000
2001
2002
2003
192 2.921 14,61
200 3.233 3 .233 13,82
234
3.631 18,91
802 14,32
56 10.840 18,85
Sumatera Utara
Area (ha) Prod (t) Prvt (kwt/ha)
7.545 184.493 24,45
11.641 268.896 23,10
8.156 198.605 24,35
8.699 272.877 27,92
10.027 249.716 24,90
Sumatera Barat
Area (ha) Prod (t) Prvt (kwt/ha)
1.788 52.346 29,28
1.786 45.978 25,74
1.768 66.216 37,45
1.836 21.535 11,73
1.632 36.063 22,10
Riau
Area (ha) Prod (t) Prvt (kwt/ha)
1 4 4,00
-
2 7 3,50
-
-
Jambi
Area (ha) Prod (t) Prvt (kwt/ha)
354 10.384 29,33
517 16.628 32,16
555 22.652 40,81
1.268 20.528 16,19
2.030 39.809 19,61
Sumatera Selatan
Area (ha) Prod (t) Prvt (kwt/ha)
172 2.334 13,57
238 2.325 9,77
225 1.553 6,90
156 1.483 9,51
256 2.702 10,55
Bengkulu
Area (ha) Prod (t) Prvt (kwt/ha)
3.686 86.115 23,36
2.690 43.005 15,99
1.637 1.637 28.113 17,17
3.258 55.898 17,16
1.662 1.662 25.078 15,09
Lampung
Area (ha) Prod (t) Prvt (t/ha)
615 9.757 15,87
781 9.049 11,59
517 7.019 13,58
344 5.756 16,73
607 9.883 16,28
575
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SUMATERA SUMATER A
Area (ha) Prod (t) Prvt (t/ha)
14.353 349.064 24,32
17.853 388.802 21,78
13.094 327.398 25,00
15.617 348.879 22,34
16.789 374.091 22,28
DKI Jakarta
Area (ha) Prod (t) Prvt (t/ha)
-
-
-
-
-
Jawa Barat
Area (ha) Prod (t) Prvt (t/ha)
23.239 613.338 26,39
21.101 501.381 23,76
19.788 490.449 24,79
17.729 431.208 24,32
18.403 438.091 23,81
Jawa Tengah
Area (ha) Prod (t) Prvt (t/ha)
15.644 262.266 16,76
13.339 207.005 15,52
12.181 185.775 15,25
11.537 165.888 14,38
14.360 240.134 16,72
DI Yogya
Area (ha) Prod (t) Prvt (t/ha)
50 1.718 34,36
26 822 31,62
45 1.358 30,18
67 2.324 34,69
40 1.025 25,63
Jawa Timur
Area (ha) Prod (t) Prvt (t/ha)
8.111 121.074 14,93
9.563 131.986 13,80
8.616 121.794 14,14
9.277 166.551 17,95
9.068 157.411 17,36
Banten
Area (ha) Prod (t) Prvt (t/ha)
-
-
1 3 30,00
-
-
Area (ha) Prod (t) Prvt (t/ha)
47.044 998.396 21,22
44.029 841.194 19,11
40.631 799.379 19,67
38.610 765.971 19,84
41.871 836.661 19,98
Bali
Area (ha) Prod (t) Prvt (t/ha)
1.315 51.893 39,46
1.376 51.841 37,68
1.290 48.611 37,68
1.353 50.468 37,30
1.282 51.188 39,93
NTB
Area (ha) Prod (t) Prvt (t/ha)
411 3.041 7,40
74 1.034 13,97
286 3.211 11,23
391 2.868 7,34
361 3.086 8,55
NTT
Area (ha) Prod (t) Prvt (t/ha)
161 645 4,01
212 838 3,95
165 679 4,12
218 1.799 8,25
222 1.208 5,44
BALI & NTT
Area (ha) Prod (t) Prvt (t/ha)
1.887 55.579 29,45
1.662 53.713 32,32
1.741 52.501 30,16
1.962 55.135 28,10
1.865 55.482 29,75
Kalimantan Barat
Area (ha) Prod (t) Prvt (t/ha)
12 53 4,42
5 22 4,40
9 44 4,89
22 77 3,50
179 688 3,84
Kalimantan Tengah
Area (ha) Prod (t) Prvt (t/ha)
1 4 4,00
5 18 3,60
-
1 10 10,00
-
Kalimantan Selatan
Area (ha) Prod (t) Prvt (t/ha)
5 18 3,60
5 18 3,60
2 7 3,50 3,50
-
-
Kalimantan Timur
Area (ha) Prod (t)
85 1.263
70 414
36 298
80 367
46 185
JAWA
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Sulawesi Utara
Area (ha) Prod (t) Prvt (t/ha)
149 1.168 7,84
493 3.846 7,80
320 5.740 17,94
325 2.457 7,56
332 6.456 19,45
Sulawesi Tengah
Area (ha) Prod (t) Prvt (t/ha)
143 1.522 10,64
191 1.042 5,46
138 624 4,52
221 1.207 5,46
158 2.630 16,65
Sulawesi Selatan
Area (ha) Prod (t) Prvt (t/ha)
1.293 38.054 29,43
2.449 46.310 18,91
2.640 15.831 6,00
2.639 54.384 20,61
2.721 67.970 24,98
Sulawesi Tenggara
Area (ha) Prod (t) Prvt (t/ha)
107 905 8,46
113 690 6,11
141 968 6,87
243 1.669 6,87
97 501 5,16
Gorontalo
Area (ha) Prod (t) Prvt (t/ha)
-
-
3 11 3,67
5 19 3,80
3 5 1,67
Area (ha) Prod (t) Prvt (t/ha)
1.692 41.649 24,62
3.246 51.888 15,99
3.242 23.174 7,15
3.433 59.736 17,40
3.311 77.562 23,43
Maluku
Area (ha) Prod (t) Prvt (t/ha)
20 128 6,40
22 60 2,73
67 831 12,40
18 115 6,39
117 483 4,13
Maluku Utara
Area (ha) Prod (t) Prvt (t/ha)
-
-
-
28 84 3,00
36 540 15,00
Papua
Area (ha) Prod (t) Prvt (t/ha)
253 1.756 6,94
17 281 16,53
385 1.772 4,60
464 2.469 5,32
306 306 2.741 8,96
MALUKU & PAPUA
Area (ha) Prod (t) Prvt (t/ha)
273 1.884 6,90
39 341 8,74
452 2.603 5,76
510 2.668 5,23
459 3.764 8,20
LUAR JAWA
Area (ha) Prod (t) Prvt (t/ha)
18.308 449.514 24,55
22.885 495.216 21,64
18.576 406.025 21,86
21.625 466.872 21,59
22.649 511.772 22,60
INDONESIA INDONESI A
Area (ha) Prod (t) Prvt (t/ha)
65.352 1.447.910 22,16
66.914 1.336.410 19,97
59.207 1.205.404 20,36
60.235 1.232.843 20,47
64.520 1.348.433 20,90
SULAWESI
Sumber: Direktorat Jenderal Tanaman Pangan dan Hortikultura
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Analisis data tahunan produksi dan areal tanam kubis mencakup periode waktu 1970-2003 menunjukkan bahwa tingkat pertumbuhan rata-rata produksi kubis di Indonesia cenderung menurun sebesar 0.5% (0.005). Tingkat pertumbuhan produksi rata-rata kubis (meningkat/menurun) pada dasarnya dapat dipilah ke dalam pertumbuhan yang disebabkan oleh peningkatan/penurunan areal tanam dan peningkatan/penurunan produktivitas. Kontribusi peningkatan peningkatan dari komponen areal tanam dan produktivitas terhadap pertumbuhan produksi kubis secara berturut-turut adalah (-) 2.3% dan 1,8%. Dengan demikian, sumber dominan yang menyebabkan penurunan produksi kubis selama periode 1970-2003 adalah penurunan areal tanam. Lebih jauh lagi, keragaman areal tanam menunjukkan kontribusi yang lebih tinggi terhadap ketidak-stabilan produksi sayuran secara umum, dibandingkan dengan keragaman produktivitas. Pola pertumbuhan produksi menurun yang didominasi oleh penurunan areal tanam (kontribusi penurunan areal tanam terhadap penurunan produksi lebih besar dibandingkan dengan kontribusi peningkatan produktivitas), mengandung beberapa implikasi sebagai berikut: (a) strategi dan kegiatan/usaha yang berhubungan dengan inovasi teknologi/penelitian yang ada belum cukup kuat memacu pola pertumbuhan produksi berbasis peningkatan produktivitas, atau program penyuluhan belum berjalan secara optimal, terutama dikaitkan dengan proses alih teknologi di tingkat petani, dan (b) penurunan produksi dimungkinkan oleh adanya dis-insentif akibat perubahan harga masukan dan luaran. Harga masukan yang meningkat lebih cepat dibandingkan harga luaran, sehingga biaya per unit produk lebih tinggi dibandingkan dengan harga jual per unit produk. Hal ini memungkinkan adanya ketidak-stabilan profitabilitas relatif dari komoditas yang diusahakan, sehingga petani memutuskan untuk tidak menanam komoditas bersangkutan (Bisaliah, 1986). Indikator-indikator yang diperoleh dari hasil analisis, memberikan gambaran perlunya strategi pendekatan pengembangan yang lebih memberikan penekanan pada peningkatan akselerasi pertumbuhan produksi kubis berbasis peningkatan produktivitas atau inovasi teknologi. Sementara itu, variabilitas areal tanam menunjukkan kontribusi yang lebih tinggi terhadap ketidak-stabilan produksi kubis selama periode 1970-2003, dibandingkan dengan variabilitas produktivitas. Hal ini mengindikasikan masih dominannya pengaruh berbagai faktor, misalnya profitabilitas kubis relatif terhadap komoditas sayuran lain, kendala ketersediaan lahan siap
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memperkecil resiko penyakit kanker lambung dan usus. Hasil penelitian di Amerika membuktikan bahwa kol yang dikonsumsi dalam keadaan mentah atau yang telah dimasak dapat mengurangi terjadinya kanker usus besar sebanyak 66%. Manfaat lain dari kol adalah dapat mencegah dan menyembuhkan luka lambung, menstimulasi kekebalan, menurunkan kadar kolesterol dalam darah serta dapat mencegah infeksi karena jamur. Jenis sayuran ini tidak saja akrab menjadi hidangan sayuran orang Indonesia, tetapi juga oleh warga Cina Singapura, bahkan rata-rata konsumsinya mencapai 40 g/hari atau tiga kali lebih tinggi daripada orang Amerika. Dari beberapa hasil studi epidemologi, dilaporkan bahwa konsumsi kubis-kubisan seperti kubis putih dan merah, brokoli, kembang kol, kale, lobak, dan seledri air dapat menurunkan risiko bergagai jenis kanker, yaitu kanker payudara, prostat, ginjal, kolon, kandung kemih dan paru-paru. Pada kanker prostat, konsumsi tiga atau lebih porsi sayuran tersebut mampu menurunkan risikonya dibanding konsumsi hanya satu porsi per minggu. Demikian halnya, konsumsi sayuran Brassica sebanyak 1-2 porsi/hari dilaporkan dapat menurunkan risiko kanker payudara p ayudara sebesar 20-40% Namun demikian, mengkonsumsi jenis makanan apapun sebaiknya jangan dalam jumlah yang berlebih, begitu juga dengan kubis. Kandungan goitrins nya dapat menganggu keseimbangan iodium dalam darah. Hal ini dapat terjadi pada orangorang tertentu yang menderita mag, gastritis dan perut kembung. Konsumsi kubis yang berlebih akan menyebabkan terbentuknya gas dalam lambung. Tetapi jika asupan iodium dari makanan lain seimbang, mengkonsumsi kubis tidak perlu lagi dikhawatirkan. Tabel 4 dan 5 memberikan informasi lengkap mengenai komposisi makanan atau nutrisi yang terdapat pada kubis. Tabel 4
Komposisi makanan pada kubis-kubisan per 100 gr edible portion
No
Kubis-kubisan
1
Kubis putih Mentah Dikukus Kubis merah Mentah Dikukus Kubis bunga
2
3
Air (%)
Protein (gr)
Serat (gr)
Vit A (SI)
Vit C (mg)
Kalsium (mg)
Besi (mg)
92.4 93.9
1.3 1.1
0.8 0.8
130 130
47 33
49 44
0.4 0.3
90.2
2.0
1.0
40
61
42
0.8
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Tabel 5
Nutrisi dalam kubis (1 gelas, dicacah, 89 gr) Nutrient
Proximates Water Energy Energy Protein Total lipid (fat) Ash Carbohydrate, by difference Fiber, total dietary Minerals Calcium, Ca Iron, Fe Magnesium, Mg Phosphorus, P Potassium, K Sodium, Na Zinc, Zn Copper, Cu Manganese, Mn Selenium, Se Vitamins Vitamin C, tot asc acid Thiamin Riboflavin Niacin Pantothenic acid Vitamin B-6 Folate, total Folic acid Folate, food Folate, DFE Vitamin B-12 Vitamin A, IU Retinol Vitamin A, RAE Vitamin E
Units
g kcal kj g g
1 cup, chopped 89 g
g
82.014 22.250 93.450 1.282 0.240 g 4.833
g
2.047
mg mg mg mg mg mg mg mg mg mcg
mg mg mg mg mcg mcg mcg mcg
mcg
Nutrient
Lipids Fatty acids, total satur 4:0 6:0 8:0 10:0 0.632 12:0 14:0
16:0 18:0 41.830 Fatty acids, total monounsaturated 0.525 16:1 undifferentiated 13.350 18:1 undifferentiated 20.470 20:1 218.940 22:1 undifferentiated 16.020 Fatty acids, total polyunsaturated 0.160 18:2 undifferentiated 0.020 18:3 undifferentiated 0.142 18:4 0.801 20:4 undifferentiated 20:5 n-3 mg 28.658 22:5 n-3 0.045 22:6 n-3 0.036 Cholesterol 0.267 Phytosterols 0.125 Amino acids mg 0.085 Tryptophan 38.270 Threonine 0.000 Isoleucine 38.270 Leucine 38.270 Lysine mcg 0.000 Methionine IU 118.370 Cystine 0.000 Phenylalanine mcg 6.230 Tyrosine mg 0.093 Valine
Units
1 cup, chopped 89 g
g g g g g g
0.029 0.000 0.000 0.000 0.000 g 0.001
g g g
0.026 0.001 0.017
g g g g g
0.000 0.017 0.000 0.000 0.109
g g g g g
0.046 0.061 0.000 0.001 0.000 g
0.001
0.000
g mg mg
0.000 0.000 9.790 g
g g g g
0.013 0.044 0.064 0.065 0.060
g g
0.012 0.011
g
0.040 g g
0.021 0.054
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titik saturasi. Dengan demikian, sejalan dengan peningkatan pendapatan, konsumsi kubis di negara-negara berkembang juga akan semakin meningkat. Disamping pendapatan per kapita, pertumbuhan konsumsi kubis per kapita juga dipengaruhi oleh harga relatif dan ketersediaan bahan substitusi. Tingkat pertumbuhan ini juga merupakan fungsi dari selera, preferensi serta berbagai faktor demografis dan kultural. Sementara itu, konsumsi kubis di Indonesia menunjukkan peningkatan yang cenderung kurang konsisten dalam 10 tahun terakhir ini. Dengan asumsi akurasi data terjamin, beberapa hal yang dapat dikemukakan sehubungan dengan konsumsi kubis di Indonesia adalah sebagai berikut: Selama kurun waktu 10 tahun terakhir, konsumsi per kapita kubis nasional • menunjukkan peningkatan yang relatif kecil, yaitu sekitar 0,2 kg (1993-2004) Konsumsi per kapita kubis di daerah pedesaan relatif lebih tinggi dibandingkan • dengan di daerah perkotaan dan menunjukkan kecenderungan semakin meningkat Konsumsi per kapita kubis di daerah perkotaan menunjukkan kecenderungan • semakin menurun (Catatan: penurunan konsumsi per kapita kubis dari tahun ke tahun ini juga terjadi di beberapa negara maju, misalnya Canada, yang konsumsinya secara secara konsisten terus menurun:1999 (5.71 kg/kapita); 2000 (5.48 kg); 2001 (4.81 kg); 2002 (4.86 kg); dan 2003 (4.13 kg).
Tabel 6
Konsumsi kubis di perkotaan dan pedesaan Indonesia (kg/kapita/tahun)
Tahun
Perkotaan
Pedesaan
Total
1993
1.77
1.87
1.87
1996
1.72
1.92
1.82
1999
1.47
1.66
1.56
2002
1.87
1.97
1.92
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• • •
Teknologi didiseminasikan diantara partisipan rantai pasokan, misalnya diantara produsen, pengepak dan pengolah Hak kepemilikan berpindah dari produsen kubis ke pengepak atau pengolah, kemudian ke pemasar Informasi mengenai permintaan konsumen serta preferensinya mengalir dari pedagang pengecer ke produsen kubis
Uraian di atas menunjukkan bahwa rantai pasokan kubis merupakan suatu sistem ekonomi yang mendistribusikan manfaat dan juga risiko diantara berbagai partisipan yang terlibat di dalamnya. Dengan demikian, rantai pasokan kubis secara tidak langsung telah mengembangkan mekanisme internal serta insentif untuk menjamin ketepatan berbagai komitmen produksi maupun delivery . Lokasi geografis sentra produksi kubis memungkinkan produk sayuran tersebut dipasarkan tidak hanya untuk memenuhi kebutuhan lokal, tetapi juga antar wilayah/regional. Rantai pasokan yang terjadi pada dasarnya merupakan bentuk pelayanan yang sudah melembaga untuk menjembatani produsen dan konsumen sayuran. Intervensi pemerintah terhadap rantai pasok kubis ini cenderung terbatas pada dukungan ketersediaan infrastruktur fisik, misalnya jalan dan bangunan pasar. Tataniaga kubis seluruhnya ditangani oleh pihak swasta. Hal ini mengimplikasikan bahwa rantai pasok kubis secara umum cenderung beroperasi berdasarkan kekuatan penawaran dan permintaan. Beberapa jenis rantai pasok kubis yang berhasil diidentifikasi d iidentifikasi diantaranya adalah: 1. produsen – transporter/pengangkut – pedagang pengumpul desa atau bandar –
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PRODUSEN
TRANSPORTER/PENGANGKUT
BANDAR ATAU PEDAGANG PENGUMPUL LOKAL
PEDAGANG PENGUMPUL REGIONAL ASSEMBLY TRADER
TRANSPORTER/PENGANGKUT
PEDAGANG BESAR/ GROSIR DI BANDUNG
PEDAGANG BESAR/ GROSIR DI JAKARTA
PENGEPAK
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Tabel 7
Elemen, deskripsi dan nilai tambah dalam rantai pasokan sayuran/kubis Elemen
Produsen
Pedagang tebasan
Pedagang pengumpul lokal/desa
Pedagang pengumpul antar wilayah
Pengepak
Deskripsi Petani yang menghasilkan serta memanen sayuran/kubis, dan untuk beberapa saluran distribusi tertentu juga melakukan kegiatan pengkelasan Pedagang yang membeli sayuran (terutama tomat, kubis, kubis bunga serta sayuran daun lainnya) pada saat tanaman masih berada di lapangan (sebelum panen). Pedagang lokal yang mengumpulkan/ membeli sayuran/kubis dalam volume yang relatif besar dari petani atau beberapa petani dan memasarkannya ke pusat-pusat konsumsi. Jenis pedagang yang berdomisili di luar sentra produksi ini membeli sayuran/ kubis dan memasarkannya memasarkannya ke pasarpasar grosir dan pengecer. Sayuran/ kubis dapat dibeli langsung dari petani atau bandar/ pedagang pengumpul lokal. Jenis usaha yang melakukan pembelian, sortasi, pengkelasan, pengepakan/ pengemasan serta memberikan pelayanan penyimpanan jangka pendek. Elemen ini juga mengkoordinasikan transportasi produk serta memiliki kontrak pemasokan dengan pengecer-
Nilai Tambah o o o
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Produksi Panen Pengkelasan (grading (grading )
Panen Pengkelasan
Pengumpulan Sortasi Pengkelasan Pengangkutan
Pengumpulan Sortasi Pengkelasan Pengangkutan
Jaminan kualitas Pengkelasan Pengemasan Koordinasi transpor dan negosiasi Penyimpanan jangka pendek terkontrol
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o o o o
o
o o o o
Variabilitas harga yang tinggi Kehilangan hasil dan susut yang tinggi Respon terhadap pemesanan yang relatif lambat Kurangnya pengawasan kualitas sepanjang rantai, termasuk kurangnya alat trans-portasi serta gudang penyimpanan berpendingin Kurangnya perencanaan produksi secara umum serta metode produksi yang relatif masih sederhana/konvensional Kemampuan terbatas untuk memenuhi permintaan spesifikasi produk Kurangnya informasi pasar sepanjang rantai pasokan Kurangnya rasa kepercayaan antar elemen yang terlibat di dalam rantai pasokan p asokan Kesulitan koordinasi antar pemasok-pemasok skala kecil
Indikator yang kemungkinan dapat digunakan untuk mengevaluasi keragaan rantai pasokan diantaranya adalah (a) farmer’s share dan (b) marjin tataniaga. Bagian petani adalah rasio (dalam persen) antara harga yang diterima petani dengan harga yang dibayarkan konsumen. Sedangkan marjin tataniaga adalah selisih antara harga yang dibayarkan konsumen dengan harga yang diterima petani. Marjin tataniaga merepresentasikan harga untuk membayar jasa atau pelayanan yang diperlukan dalam mempersiapkan produk memasuki pasar. Besarnya marjin tataniaga akan sangat dipengaruhi oleh kombinasi: (a) kualitas dan kuantitas jasa pemasaran yang diberikan, (b) biaya yang diperlukan untuk jasa/pelayanan pemasaran tersebut, serta (c) efisiensi teknis dan harga jasa/pelayanan pemasaran yang diberikan. Tabel 8 menunjukkan bahwa selama periode 2000-2004, koefisien variasi marjin pemasaran kubis lebih tinggi dibandingkan dengan petsai dan tomat, namun sedikit lebih rendah dibandingkan dengan kentang. Hal ini mengindikasikan bahwa ketidak-
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petani secara konsisten selalu lebih rendah dibandingkan dengan besaran variasi marjin tataniaga. Bagian petani dan marjin tataniaga biasanya berkorelasi negatif, artinya jika bagian petani meningkat maka marjin tataniaga akan menurun. Secara implisit hal ini mengimplikasikan adanya keterkaitan yang kuat antara elemen produksi dan elemen pemasaran di dalam rantai pasokan sayuran/kubis tradisional di Jawa Barat. Sementara itu, selama kurun waktu 2001-2003, data perdagangan (ekspor-impor) kubis menunjukkan bahwa Indonesia masih merupakan net exporter dari exporter dari sisi volume maupun nilainya. Ekspor kubis dalam tiga tahun terakhir menunjukkan penurunan dari sisi volume, tetapi terjadi kenaikan dari sisi nilai. Negara destinasi ekspor kubis terutama adalah Malaysia dan Singapore, namun ada sebagian pula yang diekspor ke Taiwan, Jepang, Hongkong, Thailand, Mongolia dan Mexico. Selama 2001-2003, impor kubis juga menunjukkan kecenderungan serupa dengan ekspor, yaitu penurunan volume, tetapi kenaikan nilai. Negara utama asal impor kubis adalah China dan Australia, dan sebagian kecil berasal dari Korea dan Vietnam. Perlu diperhatikan bahwa unit biaya per kilogram kubis yang harus dikeluarkan untuk ekspor dan impor selalu meningkat me ningkat dari tahun ke tahun, namun biaya/kg untuk kubis impor selalu lebih tinggi dibandingkan dengan biaya/kg untuk kubis ekspor.
Tabel 9
Volume dan nilai ekspor/impor kubis Indonesia, 2001-2003
Tahun
Ekspor Volume (kg)
Nilai (US$.)
Impor Unit (US$/kg)
Volume (kg)
Nilai (US$)
Unit (US$/kg)
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petani yang menerapkannya, sehingga mulai dirasakan sebagai kebutuhan bagi petani. Dari aspek pertumbuhan dan pengembangan kegiatan/usaha agribisnis, penerapan SNI dapat memberikan manfaat: (a) mewujudkan tercapainya persaingan yang sehat dalam perda-gangan, (b) menunjang pelestarian lingkungan hidup, (c) meningkatkan kepercayaan dan kepuasan pelanggan melalui sistematika dan pendekatan yang terorganisir pada pemastian mutu, (d) meningkatkan citra dan daya saing petani/pelaku agribisnis, (e) meningkatkan efisiensi di dalam berproduksi, dan (f) mengantisipasi tuntutan konsumen atas mutu produk dan tingkat persaingan usaha yang telah mengalami perubahan sehingga pelaku agribisnis dapat menanggapinya melalui pendekatan mutu, pengendalian mutu, pemastian mutu, manajemen mutu dan manajemen mutu terpadu. Sesuai dengan Keputusan Presiden Nomor : 12 tahun 1991, standar yang berlaku di seluruh wilayah Indonesia adalah Standar Nasional Indonesia, yang mulai diberlakukan sejak tanggal 1 April 1994. Sebagai tindak lanjut penetapan Standar Nasional Indonesia, melalui Keputusan Menteri Pertanian Nomor:
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Disamping syarat mutu yang ditetapkan dalam SNI, segmen pasar juga menetapkan persyaratan-persyaratan tertentu dan mengelompokkannya ke dalam beberapa kelas mutu. Persyaratan mutu yang ditetapkan segmen pasar untuk komoditas kubis segar antara lain : Tabel 11
Persyaratan mutu kubis sesuai dengan permintaan segmen pasar Kriteria
Kelas Mutu Mutu I
Ukuran/bobot (gr)
besar/ >1000
Mutu II sedang /< 1000
Warna daun luar
Hijau sampai keputihan
Hijau sampai keputihan
Kesegaran (%)
90 – 100
80 – 89
Permukaan kulit
Mulus
Mulus
Kotoran
bebas
bebas
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bahwa variasi harga kubis (dan kentang, tomat, petsai) di tingkat pedagang besar secara umum lebih rendah dibandingkan dengan variasi marjin tataniaga dan variasi harga di tingkat sentra produksi. Hal ini menunjukkan bahwa dalam jangka pendek pasar cenderung beroperasi untuk mempertahankan stabilitas harga kubis (dan kentang, tomat, petsai) di tingkat pedagang besar. Indikasi ini memberikan penekanan perlunya perbaikan pengelolaan rantai pasokan sayuran tradisional di Jawa Barat yang lebih memberikan perhatian terhadap upaya memecahkan instabilitas harga yang cukup tinggi di tingkat sentra produksi. Table 12
Variasi harga kubis di tingkat sentra produksi (Pangalengan) dan tingkat grosir (PIKJ), 2000-2004
Kubis
Kentang
Tomat
Petsai
Harga di tingkat sentra produksi (Rp/kg) Rata-rata
527.9
1 886.2
548.0
318.2
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maupun grosir/pedagang besar, harga kubis terendah terjadi pada bulan Agustus, sedangkan harga kubis tertinggi tercapai pada bulan April. Table 13
Pola musiman harga kubis di tingkat sentra produksi (Pangalengan) dan tingkat grosir (Cibitung), 2001-2003 Bulan
J
P
M
A
M
J
J
A
S
O
N
D
Tingkt Rata-rata harga bulanan (Rp/kg)
Sentra
676,0
549,7
988,3
1062,0
969,0
651,3
598,7
486,3
560,0
743,7 743 ,7
733,3
737,7 7 37,7
Grosir
886,0
1093,7
1208,3
1270,7
1221,0
980,3
830,3
701,7
761,0
915,0
955,0
1029,0
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d) Tanaman kubis dapat hidup pada suhu udara 10-24 derajat C dengan suhu optimum 17 derajat C. Kebanyakan varietas kubis tahan cuaca dingin (minus 610 derajat C) untuk waktu singkat, tetapi akan rusak jika dihadapkan pada cuaca dingin yang berlangsung lama. e) Tanaman kubis akan hidup dengan baik pada kisaran kelembaban udara 6090%. Jika kelembaban di atas 90% maka muncul penyakit busuk lunak berair, penyakit semai rebah dan penyakit lain yang y ang disebabkan oleh cendawan. 6.1.2. Media Tanam a) Kondisi fisik tanah yang sesuai untuk pertanaman kubis adalah tanah yang bertekstur sedang, yaitu liat berpasir, berstruktur remah (gembur), subur, banyak mengandung bahan organik. Namun demikian, tanaman kubis juga masih toleran terhadap tanah yang agak berat. b) Jenis tanah yang y ang sesuai untuk tanaman kubis adalah latosol, regosol dan andosol. Walaupun kubis masih dapat hidup pada jenis tanah lain, tetapi hasilnya kurang optimal. c) Keasaman tanah (pH) yang cocok adalah 5,5-6,5.
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b) Penyeleksian benih, dengan merendam biji dalam air, dimana benih yang baik akan tenggelam. c) Rendam benih selama ± 12 jam atau sampai benih terlihat pecah agar benih cepat berkecambah. Kebutuhan benih per hektar tergantung varietas dan jarak tanam, umumnya dibutuhkan 300 gram/ha. Benih harus disemai dan dibumbun sebelum dipindahtanam ke lapangan. Penyemaian dapat dilakukan di bedengan atau langsung di bumbun. Bumbunan dapat dibuat dari daun pisang, kertas makanan berplastik atau
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lembaran plastik (5 hari), lalu plastik dibuka, dan lahan diangin-anginkan (1015 hari). c) Kombinasi cara a) dan b). Pertama benih disebar di petak persemain, setelah berumur 4-5 hari (berdaun 3-4 helai), dipindahkan ke dalam bumbunan. d) Penanaman langsung. Benih langsung ditanam di lahan, sehingga dapat lebih menghemat waktu, biaya dan tenaga, namun memerlukan perawatan yang lebih intensif.
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b) Sistem putaran, caranya tanah disiram dan bibit dengan diambil beserta tanahnya 2,5 - 3 cm dari batang ba tang dengan kedalaman 5 cm.
6.2.2. Pengolahan Media Tanam Persiapan Lahan sebaiknya bukan lahan bekas ditanami tanaman famili Cruciferae lainnya.
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Pembuatan Lubang Tanam Lubang tanam dibuat sesuai dengan jarak tanam sedalam cangkul atau dengan ukuran garis tengah 20-25 cm sedalam 10-15 cm. cm . Cara Penanaman a) Waktu tanam yang baik adalah pada pagi hari antara pukul 06.00 - 10.00 atau sore hari antara pukul 15.00 - 17.00, karena pengaruh sinar matahari dan
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Perempelan Perempelan cabang/tunas-tunas samping dilakukan seawal mungkin untuk menjaga tanaman induk agar zat makanan terkonsentrasi pada pembentukan bunga seoptimal mungkin. Pemupukan Pemupukan susulan I dilakukan dengan urea 1 gram per tanaman melingkari
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hidup 2-3 minggu tergantung temperatur udara; (2) ngengat betina panjang
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gram Dipertex 95 SL, 10 kg dedak, 0,5-1,0 kg gula merah dan 10 liter air untuk
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g) Cengkerik dan gangsir (Gryllus (Gryllus mitratus dan Brachytrypes portentosus).
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bercak-bercak hitam. Pengendalian: Pengendalian : (1) memberi perlakuan pada benih
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a) Premium Flat Dutch: umur panen 100 hari, produksi 4,5 kg/tanaman.
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2.
Studi pemasaran dan analisis harga
dihitung berdasarkan nisbah kesetaraan (NKT/LER = land equipment ratio ), ), ternyata kombi-nasi tanaman kubis + tomat memberikan NKT yang paling tinggi (2,01). Komposisi biaya usahatani kubis di Solok, Sumatera Barat (1998) menunjukkan bahwa, komponen biaya tenaga kerja menempati urutan tertinggi (25,8 %), diikuti pestisida (16,7 %), pupuk (15,4 %), biaya lain-lain (14,4 %) dan biaya bibit (10,7%). Dengan tingkat produksi yang cukup tinggi (28,3 t/ha) dan nilai produksi Rp. 2.405.500, maka tingkat keuntungan yang dapat diterima petani cukup tinggi, yaitu Rp. 1.431.852 (R/C ratio = 2,47). Produktivitas usahatani kubis di daerah ini ternyata masih belum optimal, peningkatan produksi masih dapat diusahakan dengan meningkat-kan penggunaan pupuk, luas lahan garapan dan tenaga kerja.
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Ditinjau dari segi penggunaan inputnya, usahatani kubis di daerah Pangalengan, Bandung masih belum efisien. Secara nyata produksi masih dapat ditingkatkan dengan menam-bah penggunaan pupuk ZA dan KCl.
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Dalam periode 1985-1995, terdapat indikasi bahwa marjin tataniaga riil dan nominal kubis di Jawa Barat dan Sumatera Utara terus menunjukkan peningkatan. Namun demikian, marjin tataniaga riil dan nominal kubis di Jawa Barat lebih tinggi dibandingkan dengan Sumatera Utara. Dalam kurun waktu sepuluh tahun terakhir (1985-1995), bagian petani relatif lebih stabil dibandingkan dengan marjin tataniaga. Semakin tinggi nilai ekonomis suatu komoditas, semakin tinggi pula bagian yang diterima petani. Semakin tinggi marjin tataniaga, semakin rendah bagian petani dari harga yang dibayarkan konsumen. Perbandingan koefisien variasi marjin tataniaga, harga produsen dan harga konsumen mengindikasikan bahwa dalam jangka pendek, mekanisme pasar cenderung mendorong stabilitas harga di tingkat konsumen. Sementara itu, jika ditinjau dari sisi produksi kubis (Jawa Barat dan Sumatera Utara), mekanisme pasar cenderung lebih mendorong stabilitas marjin tataniaga dibandingkan dengan harga di tingkat produsen. Dalam usaha perbaikan sistem pema-saran perlu lebih ditekankan untuk memecahkan masalah
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Catatan Umum 1. Informasi mengenai sosial ekonomi kubis masih sangat terbatas. Dalam kurun waktu 1984-2004 (20 tahun), studi sosial ekonomi kubis yang dapat dikumpulkan hanya 5 buah artikel (4 buah artikel studi ekonomi produksi dan 1 buah artikel studi pemasaran dan analisis harga). 2. Informasi studi ekonomi produksi sudah relatif lama (terakhir tahun 1994) dan mengingat perkembangan perubahan yang terjadi dalam satu dasawarsa terakhir yang cukup signifikan, maka dirasa perlu untuk segera memperbaharuhi datadata tersebut melalui kegiatan-kegiatan penelitian pada masa yang akan datang. d atang. 3. Mengingat komoditas kubis memiliki nilai ekonomi yang relatif tinggi dan banyak diminati serta ditanam petani, maka pada tahun-tahun mendatang dirasa sangat perlu untuk memperbanyak penelitian sosial ekonomi kubis yang menyangkut berbagai aspek, yaitu mulai dari studi produksi, pemasaran hingga studi konsumen (selera pasar). IX.
Kendala pengembangan kubis dari sisi tekno-sosio-ekonomis
Analisis data tahunan produksi dan areal tanam kubis mencakup periode waktu 1970-2003 menunjukkan bahwa tingkat pertumbuhan rata-rata produksi kubis di Indonesia cenderung menurun sebesar 0.5% (0.005). Tingkat pertumbuhan produksi rata-rata kubis (meningkat/menurun) pada dasarnya dapat dipilah ke dalam pertumbuhan yang disebabkan oleh peningkatan/penurunan areal tanam dan peningkatan/penurunan produktivitas. Kontribusi peningkatan peningkatan dari komponen areal tanam dan produktivitas terhadap pertumbuhan produksi kubis secara berturut-turut adalah (-) 2.3% dan 1,8%. Dengan demikian, sumber dominan yang menyebabkan penurunan produksi kubis selama periode 1970-2003 adalah penurunan areal tanam. Lebih jauh lagi, keragaman areal tanam menunjukkan kontribusi yang lebih tinggi terhadap ketidak-stabilan produksi sayuran secara umum, dibandingkan dengan keragaman produktivitas. Pola pertumbuhan produksi (negative (negative ) yang didominasi oleh penurunan areal tanam (kontribusi penurunan areal tanam lebih besar dibandingkan dengan kontribusi peningkatan produktivitas), mengindikasikan beberapa kendala pengembangan sebagai berikut: Inovasi teknologi/penelitian yang ada belum dapat memacu pertumbuhan • produksi berbasis peningkatan produktivitas. Salah satu diantaranya adalah belum adanya varietas baru kubis (local) yang dikategorikan lebih unggul daripada yang telah banyak digunakan di tingkat petani. Komponen teknologi budidaya yang tersedia secara umum belum dapat • memacu peningkatan produktivitas kubis.
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•
Keragaman areal tanam menunjukkan kontribusi yang lebih tinggi terhadap ketidak-stabilan produksi kubis secara umum, dibandingkan dengan keragaman produktivitas. Dengan demikian, probabilitas terjadinya fluktuasi pasokan relatif lebih tinggi.
Komparasi dengan beberapa negara di Asia (Cina, Singapura) mengindikasikan bahwa konsumsi kubis di Indonesia masih jauh dari titik saturasi. Pertumbuhan konsumsi kubis per kapita juga dipengaruhi oleh harga relatif, ketersediaan bahan substitusi, selera, preferensi serta berbagai faktor demografis dan kultural. Dari sisi konsumsi, diversifikasi pemanfaatan yang relatif masih rendah dan terbatas pada perkembangan permintaan kubis relatif lambat. Hal ini pada gilirannya dapat pemanfaatan untuk pangan (bahkan bukan bahan pangan pokok) menyebabkan dikategorikan sebagai salah satu faktor pembatas pengembangan produksi kubis di Indonesia. Indikator bagian petani (farmer's (farmer's share ) sebesar 75% dari harga eceran serta minimalnya campur tangan (pasar) pemerintah, memberikan gambaran bahwa struktur pasar domestik kubis dapat dikategorikan bersaing sempurna dan keragaannya cukup efisien. Namun demikian, hal ini tampaknya tidak terjadi pada ekspor-impor kubis. Data perdagangan (ekspor-impor) kubis menunjukkan bahwa Indonesia masih merupakan net exporter dari sisi volume maupun nilainya. Namun demikian, perlu diperhatikan bahwa unit biaya per kilogram kubis yang harus dikeluarkan untuk ekspor dan impor selalu meningkat me ningkat dari tahun ke tahun, namun biaya/kg untuk kubis impor selalu lebih tinggi dibandingkan dengan biaya/kg untuk kubis ekspor. Dugaan bahwa kubis Indonesia kebersaingannya (competitiveness (competitiveness ) semakin menurun perlu mendapat klarifikasi lebih lanjut. Variasi harga kubis di tingkat pedagang besar secara umum lebih rendah dibandingkan dengan variasi marjin tataniaga dan variasi harga di tingkat sentra produksi. Hal ini menunjukkan bahwa dalam jangka pendek pasar cenderung beroperasi untuk mempertahankan stabilitas harga kubis di tingkat pedagang besar. Indikasi ini memberikan penekanan perlunya perbaikan pengelolaan rantai pasokan kubis di Jawa Barat yang lebih memberikan perhatian terhadap upaya memecahkan instabilitas harga yang cukup tinggi di tingkat sentra produksi. Selama periode 2001-2003, di tingkat sentra produksi maupun grosir/pedagang besar, harga kubis terendah terjadi pada bulan Agustus, sedangkan harga kubis tertinggi tercapai pada bulan April. Hal ini menunjukkan bahwa walaupun kubis pada dasarnya dapat ditanam sepanjang tahun pola perilaku harga kubis secara eksplisit menunjukkan adanya pola musiman penanaman dan penawaran kubis ( peak and low season ). ).
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akar pekuk (Plasmodiophor (Plasmodiophora a brassicae Wor.) brassicae Wor.) dan bercak hitam ( Alternaria sp.) Alternaria sp.) serta hama ulat Plutella (Plutella (Plutella xylostella L.); ulat croci (Crocidolomia (Crocidolomia binotalis Zeller); ulat tanah ( Agrotis ipsilon Hufn); kutu daun ( Aphis brassicae ) dan cengkerik atau gangsir (Gryllus (Gryllus mitratus dan mitratus dan Brachytrypes portentosus ). ). Intensitas penggunaan input yang tinggi pada penanaman kubis menyebabkan usahatani ini dikategorikan sebagai jenis usaha berbiaya tinggi. Intensitas penggunaan input tinggi, terutama pestisida, bahkan tidak saja berimplikasi terhadap tingginya biaya usahatani (tingkat kebersaingan produk), tetapi juga terhadap semakin terganggunya keseimbangan ekosistem.
X. Prospek, kebijakan dan strategi strategi pengembangan
Berbagai indikator di atas (pertumbuhan produksi, konsumsi, stabilitas harga dan kelayakan finansial) memberikan gambaran bahwa prospek pengembangan komoditas kubis di Indonesia masih cukup cukup baik. Gambaran tersebut tersebut secara implisit juga menunjukkan bahwa prospek peranan kubis dalam sistem pangan Indonesia akan sangat dipengaruhi oleh berbagai faktor dan perubahan demografis, ekonomi, politis serta lingkungan. Beberapa faktor penentu utama diantaranya adalah pertumbuhan penduduk, tingkat urbanisasi, tingkat pendapatan serta penurunan/ peningkatan daya beli konsumen. Perlu pula diperhatikan bahwa perubahan diet, liberalisasi pasar dan perdagangan serta tekanan/proteksi terhadap basis sumberdaya alam juga akan mempengaruhi penawaran dan permintaan kubis di masa depan. Berbagai perubahan ini cenderung mendorong produsen dan konsumen untuk memproduksi dan mengkonsumsi lebih banyak kubis dengan cara, utilisasi dan penggunaan teknologi baru. Sejak awal dibudidayakan, kubis sebagian besar ditanam di daerah atau ekosistem dataran tinggi. Kendala utama peningkatan produksi kubis di tingkat usahatani adalah penurunan kesuburan tanah, serangan hama penyakit serta ketergantungan terhadap benih impor. Oleh karena itu, isu penting yang perlu diantisipasi berkenaan dengan strategi pengembangan kubis adalah aspek keberlanjutan usahatani secara keseluruhan. Perlu penelitian interdisiplin berupa studi dampak pengelolaan intensif usahatani kubis terhadap sustainabilitas ekosistem, terutama dataran tinggi. Beberapa topik penelitian yang juga perlu dipertimbangkan diantaranya adalah status kesuburan tanah dan pola tanam, status hama penyakit, preferensi petani terhadap varietas, bahkan kelayakan pengembangan kentang berdasarkan pendekatan ekstensifikasi. Keterbatasan lahan untuk ekspansi serta ekspektasi tinggi untuk meningkatkan produktivitas cenderung mengarah pada penggunaan input, terutama pupuk dan pestisida, secara berlebih. Hal ini pada gilirannya telah meningkatkan biaya produksi
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masih dipersepsi tinggi. Oleh karena itu, kaji ulang untuk berbagai teknologi kubis perlu dilakukan sebagai bahan masukan untuk program pengembangan. Beberapa usulan kebijakan dan strategi pengembangan yang bersifat generik dapat dikemukakan sebagai berikut: a.
b.
c.
d.
Perlu dipertimbangkan pelaksanaan studi dampak berkenaan dengan teknologi usahatani kubis yang ada sekarang terhadap status kesuburan tanah, hama penyakit dan sistem pertanaman atau sistem usahatani untuk mendapatkan assessment apakah teknologi yang ada cenderung lebih memberikan solusi atau justru lebih menimbulkan masalah. Penelitian dan pengembangan komoditas kubis perlu diarahkan untuk menciptakan teknologi tepat guna yang memiliki karakteristik sebagai pengurang tingkat risiko. Secara implisit, hal ini juga mencakup teknologi yang menghasilkan output di bawah tingkat produksi maksimal dan bertumpu pada pemanfaatan proses biologis serta sumberdaya yang renewable . Penataan kelembagaan dan kebijakan yang diarahkan untuk memberikan fasilitas kredit serta memperbaiki sistem pemasaran merupakan langkah penting yang perlu segera diinisiasi agar keragaan dan efektivitas pengembangan kubis dapat terus ditingkatkan. Dalam rangka memperlambat degradasi lingkungan di dataran tinggi, berbagai komponen teknologi yang mengarah pada integrated crop yang mempertimbangkan sensitivitas management (teknologi lingkungan, viabilitas ekonomis, pendekatan keseluruhan usahatani, teknologi moderen, efifiensi penggunaan input, produk berkualitas sesuai kebutuhan konsumen dan strategi jangka panjang) perlu lebih dipacu perancangannya. Komponen teknologi tersebut perlu pula didukung oleh kebijakan pemerintah yang jelas menyangkut pemanfaatan dan pengelolaan ekosistem dataran tinggi. Disamping itu, berbagai kemungkinan pengembangan kubis ke dataran medium/rendah juga perlu dijajagi kembali kelayakan teknis, ekonomis dan sosialnya secara lebih komprehensif. Keragaan pasar kubis dengan segala permasalahannya perlu mendapat perhatian yang lebih besar dari pemerintah. Dalam hal ini, pemerintah perlu terus didorong untuk memfasilitasi pasar persaingan sempurna (melalui penerbitan regulasi pasar standar, pemberian jasa informasi pasar serta perbaikan infrastruktur pasar). Khusus untuk pasar ekspor, kebersaingan kubis Indonesia dalam jangka panjang perlu ditingkatkan melalui upaya pengurangan biaya produksi.
Daftar Pustaka
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Colman, D & Young, T. 1989. Principles of agricultural economics: Markets and prices in less developed countries. Cambridge University Press, Great Britain. Dillon, J. L. & Hardaker, J. B. 1980. Farm management research for small farmer development. Food and Agriculture Organization Agricultural Services Bulletin, Rome. Hazell, P. B. R. 1984. Sources of increased increased instability in Indian and US cereal production. Amer. J. of Agr. Econ., 66(2): 302-311. Pustaka penelitian agronomi kubis
No 1.
2.
Nama Penulis A. Darwin Harahap, P. Nainggolan dan DJ. Sinaga A. Wasito
3.
F. Silalahi
1992
4.
F. Silalahi
1992
5.
Holil Sutapradja dan Y. Hilman
1994
6.
Loso Winarto dan M. Samin
1995
Pengaruh organic soil treatment (OST) pada tanaman kubis
7.
Nani Sumarni
1982
Pengaruh pemupukan N, P dan K terhadap pertumbuhan dan hasil kubis varietas Osena dan Konstanta Pemberian pupuk Nitrogen dan mulsa pada tanaman kubis di dataran rendah Pengaruh macam pupuk nitrogen
8.
9.
Nikardi Gunadi dan A ziz A. Asandhi Nunung Nurtika
Tahun 1996
1993
1989
1988
Judul Pola tanam tumpangsari pada tanaman kubis
Sumber J. Hort. 6 (3): 255 - 262
Penggunaan pupuk majemuk nitrofosfat pada tanaman kubis kultivar Gloria Osena Pengaruh susunan barisan pada tumpangsari kubis terhadap produksi dan pendapatan bersih Pengaruh tumpangsari tomat, ercis dan kubis terhadap hasil dan produktivitas lahan Respon tanaman kubis terhadap dosis dan cara aplikasi dolomit
Bul. Penel. Hort. 25 (4): 15-21 J. Hort. 4 (2): 66-72 Bul. Penel. Hort. 22 (3): 38-44 Bul. Penel. Hort. 27 (1): 27-34 Bul. Penel. Hort. 27 (3): 31-38 Bul. Penel. Hort. 9 (5),: 25-32 Bul. Penel. Hort.17 (3),: 99-107 Bul. Penel.
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14.
Subhan
1987
15.
Subhan
1988
16.
Subhan
1988
17.
Subhan
1989
18.
Subhan
1989
19.
Subhan
1992
20
Subhan
1993
21.
Subhan
1994
22.
Subhan dan Agus Sumarna
1994
23.
24.
25.
Sudarwohadi S., Z. Abidin, F. A. Bahar dan A. Ramlan Suwandi dan Nunung Nurtika
1995
T. Sembiring, F. Silalahi dan E. Bangun
1992
1987
dan hasil krop stek tunas kubis Pengaruh macam dan dosis pupuk organik terhadap hasil kubis kultivar Gloria Osena Pengaruh penambahan pupuk P dan Mg dalam kompos terhadap pertumbuhan vegetatif dan hasil tanaman kubis varietas Ocena Pengaruh pupuk bahan-bahan organik terhadap pertumbuhan dan produksi tanaman kubis Pengaruh mulsa dan waktu pemberian pupuk N terhadap pertumbuhan dan hasil kubis varietas KK Cross di dat. rendah Uji banding pemakaian kompos jagung, kompos jerami, dan pupuk kandang domba terhadap hasil kubis kultivar Gloria Osena Pengaruh pemberian pupuk P dan K terhadap pertumbuhan dan hasil kubis kultivar Green Coronet Pengaruh dosis dan cara pemberian pupuk majemuk NPK (15-15-15) terhadap pertumbuhan dan hasil kubis kultivar Green Coronet Pengaruh pupuk fosfat dan dolomit terhadap pertumbuhan dan hasil kubis dataran tinggi kultivar Green Coronet Pengaruh dosis fosfat dan mulsa terhadap pertumbuhan vegetatif dan hasil kubis kultivar KK-Cross Pengaruh tumpangsari kubis-tomat dan penyiangan terhadap komunitas gulma dan serangga Pengaruh pupuk biokimia “sari humus” pada tanaman kubis Pengaruh pupuk organik Tress terhadap mutu dan produksi kubis
Bul. Penel. Hort. 15 (1: 617 Bul. Penel. Hort. 16 (2),:74-79 Bul. Penel. Hort. 16 (4),: 37-41 Bul. Penel. Hort.17 (3),: 53-62 Bul. Penel. Hort 27 (4): 80-91
Bul. Penel. Hort. 24 (1): 129-140 Bul. Penel. Hort 25 (4): 103-118
Bul. Penel. Hort 26 (2): 15-24
Bul. Penel. Hort 27 (1): 1-11 Bul. Penel. Hort 27 (4): 93-102 Bul. Penel. Hort. 15 (2): 213-218 Bul. Penel. Hort. 23 (2),:
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Pustaka penelitian hama penyakit kubis No .
Judul
Penulis
Publikasi/Th.
Volume/Hal
H A M A
A. 1.
2.
3.
4.
5.
6.
Plutella xylostella
Pengaruh umur tanaman kubis (Brassica oleraceae L.) oleraceae L.) dan tingkat populasi larva (Plutella (Plutella Linn) terhadap xylostella Linn) xylostella tingkat kerusakan dan hasil panen kubis. Pengaruh beberapa insektisida terhadap hama ulat daun kubis dan parasitoid (Diadegma eucerophaga ). ). Efikasi Teflubenzuron, Flufenoxuron dan Chlorfluazuron terhadap hama Plutella xylostela L. xylostela L. dan Croccidolomia binotalis Zell.) binotalis Zell.) pada tanaman kubis Pengaruh banyaknya aplikasi insektisida Permetrin terhadap keperidian Plutella xylostella L. xylostella L. pada tanaman kubis di laboratorium.
Efektivitas insektisida Teflubenzuron terhadap telur, larva dan imago Plutella (Lepidoptera : xylostella L. xylostella L. (Lepidoptera Yponomeutidae ) di laboratorium. Efisiensi dan efektivitas modifikasi alat semprot “Boom Sprayer” dalam pengendalian hama Plutella xylostela L. xylostela L. (Lepidoptera : Yponomeutidae ) pada
Emma Agustien Hasyim
Skripsi Ilmu Hama dan Penyakit Tumbuhan. FPN UNPAD. Th. 1985
110 hal
Sudarwohadi S. Tonnny K. Moekasan
Buletin Penelitian Hortikultura Th. 1983
Vol. X No. 1 Hal : 21-30
Rustaman, E.S. Duskarno
Buletin Penelitian Hortikultura Th. 1990
Vol XIX No. 4 Hal : 117-123
Haeruman Selamet
Am Am Gilang Yatmaha
Purnomo Dwi Sasongko
Skripsi Jurusan Hortikultura Akademi Pertanian Nasional Yayasan Pembina Pendidikan Pertanian Bandung. Th. 1986 Skripsi FPN Univ. Bandung Raya Th. 1989
59 hal
Skripsi Jurusan Ilmu Hama dan Penyakit. FPN UNINUS Bandung. Th. 1989
64 hal
51 hal
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10.
11.
12.
13.
14.
15.
16.
17.
WP (Panol) terhadap laju H.D. Hortikultura serangan Plutella xylostella L. Mastur Th. 1992 xylostella L. dan Croccidolomia binotalis Suparman Zell pada tanaman kubis. Sinergisme insektisida Tinny S. Uhan Buletin Penelitian klorpirifos dan beberapa Ineu Sulastrini Hortikultura insektisida serta PB terhadap Th. 1993 larva Plutella xylostella L. L. xylostella Ambang kendali ulat daun Sudarwohadi S. Buletin Penelitian kubis (Plutella (Plutella xylostella L.) xylostella L.) Tata R. Omoy Hortikultura pada tanaman kubis. Th. 1991 Efisiensi penggunaan Wiwin Setiawati Buletin Penelitian insektisida pada tanaman Sudarwohadi S. Hortikultura kubis berdasarkan hasil Th. 1992 tangkapan ngengat Plutella xylostella L. xylostella L. dengan seks feromon Px dan perangkap kuning. Telaahan ambang kendali L.P. Astuti Habitat hama Plutella xylostella L. xylostella L. Gatot Mudjiono April 1999. pada tanaman kubis. T. Nur Rofiyah Status resistensi Plutella Adi Sukwida Skripsi (Lepidoptera : FPN Univ. Bandung xylostella L. xylostella L. (Lepidoptera Raya Yponomeutidae ) strain Lembang terhadap beebrapa Th. 1988 jenis insektisida golongan organofosfor, piretroid sintetik dan benzoil urea. Resistensi ngengat Plutella Hanifah Skripsi (Lepidoptera : Sobarioh FPN Univ. Islan xylostella L. xylostella L. (Lepidoptera Yponomeutidae ) strain Nusantara Bandung Lembang dan Pacet terhadap Th. 1989 beberapa jenis insektisida piretroid sintetik. Status resistensi lima strain Moekasan, T.K. Jurnal Hortikultura S. Sastrisiswojo Th. 2004 Plutella xylostella L. xylostella L. terhadap formulasi fipronil, delbametrin, T. Rukmana profenofos, abamektin dan H. Sutanto Bacillus thuringiensis . I.S. Purnamasari A. Kurnia Penggunaan bakteri Anna Buletin Penelitian Laksanawati Hortikultura Streptomyces avermectylis
Hal : 49-56
Vol. XXVI No. 1 Hal : 133-137
Vol. XX No. 3 Hal : 95-104 Vol. XXII No. 3 Hal : 64-74
Vol. 10 No. 106 Hal : 9-13 77 hal
85 hal
Vol. 14 No. 2 Hal : 84-90
Vol. XVI No. 4 Hal : 70-75
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20.
21.
22.
23.
24.
Yponomeutidae ) pada tanaman kubis. Aktivitas ekstrak biji nimba ( Azadirachta Azadirachta indica A. A. Zuss) sebagai antifeedant dan repellent terhadap larva Plutella xylostella L. xylostella L. (Lepidoptera : Yponomeutidae ). ). Efektivitas insektisida mikroba dan kimia secara tunggal dan campurannya terhadap hama Plutella xylostella L. xylostella L. (Lepidoptera : Yponomeutidae ) dan Croccidolomia binotalis Zell binotalis Zell (Lepidoptera : Pyralidae ) pada tanaman kubis. Pengujian toksisitas ekstrak daun pacar cina, Aglaia cina, Aglaia odorata dan odorata dan daun kirinyu, Cromolaena odorata terhadap odorata terhadap ulat daun kubis Plutella xylostella L. xylostella L. Resistensi tanaman krusifer terhadap hama ulat daun kubis, Plutella xylostella L. xylostella L.
Pengaruh tanaman perangkap terhadap populasi Plutella xylostella L. xylostella L. dan kerusakan pada tanaman kubis. 25. Pengaruh ukuran kurungan pada tingkat parasitasi dan nisbah kelamin Cotesia plutellae Kurdj plutellae Kurdj (Hymenoptera : Broconidae) terhadap larva Plutella xylostella L. xylostella L. (Lepidoptera : Yponomeutidae).
Rika Kartika
Skripsi Jurusan Hama & Penyakit Tumbuhan FPN UNINUS Bandung Th. 1990
57 hal
Dadang Wahyu Iriana
Skripsi Jurusan Hama & Penyakit Tumbuhan FPN UNINUS Bandung. Th. 1990
95 hal
Martua Suhunan S. Toto Suharto
Sudarwohadi S. Anggorohadi Permadi A. Laksanawati H.D. Itja Misra Bidari Setiati Aisyah
Ratna Ningsih
Jurnal Agrikultura April 2002
Vol. 13 No. 1 Hal : 30-38
Buletin Penelitian Hortikultura Th. 1987
Vol. XV No. 1 Hal : 29-37
Skripsi FPN Univ. Jendral Soedirman Th. 1986 Skripsi Jurusan Hama & Penyakit Tumbuhan FPN Univ. Islam Nusantara Bandung Th. 1991
87 hal
53 hal
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4.
5.
6.
7.
8.
8.
C. 1.
). oleracea L. oleracea L. var. Capitata ). Penetapan ambang kendali Croccidolomia pavonana (F) pavonana (F) (Lepidoptera : Pyralidae) pada tanaman kubis (Brassica (Brassica ). oleracea var. oleracea var. Capitata ). Pengujian ambang kendali ulat krop kubis Croccidolomia binotalis Zell binotalis Zell (Lepidoptera : Pyralidae) pada tanaman kubis. Resistensi Croccidolomia binotalis Zell binotalis Zell strain Lembang terhadap beberapa jenis insektisida. Efikasi plasma nutfah bengkuang (Pachyrhizus (Pachyrhizus erosus ) terhadap ulat krop kubis (Croccidolomia (Croccidolomia pavanana F.) Pengaruh jamur Metarrhizium anisopliae terhadap anisopliae terhadap serangan Croccidolomia binotalis Zell binotalis Zell pada tanaman kubis varietas KR-1. Patogenitas jamur yang berasosiasi dengan larva Croccidolomia binotalis Zell. binotalis Zell.
Tisna
Skripsi FPN Univ. Bandung Raya Th. 1992
67 hal
Barnas Subhana
Skripsi Jurusan Hama & Penyakit Tumbuhan FPN Univ. Islam Nusantara Th. 1992 Jurnal Hortikultura Th. 1993
76 hal
Tinny S. Uhan Ineu Sulastrini
Budi Martono
Hubagyo K. Loso Winarto Amral Fery S. Sembiring
Agr. UMY Th. 2004
Buletin Penelitian Hortikultura Th. 1992
Berty H. Assa Henny Makal
Eugenia Th. 1995
Tinny S. Uhan
Buletin Penelitian
Vol. 3 No. 2 Hal : 75
Vol. XII No. 1 Hal : 17-22
Vol. XXIII No. 2 Hal : 58-62
Vol. 1 No. 4 Hal : 40-43
Agrotis ipsilon Hufn ipsilon Hufn Pengaruh beberapa umpan
Vol. XVII No. 3
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2.
Pemanfaatan mikroba tanah untuk pengendalian Plasmodiophora brassicae War brassicae War pada kubis (Brassica (Brassica oleracea Linn)
I. Djatnika
Buletin Penelitian Hortikultura Th. 1990
Vol. XIX No. 1 Hal : 32-35
3.
Pengaruh Mortirella sp., Mortirella sp., Trichoderma sp. Trichoderma sp. dan media tumbuhnya terhadap serangan Plasmodiophora brassicae M. brassicae M. pada kubis.
I. Djatnika
Buletin Penelitian Hortikultura Th. 1991
Vol. XXI No. 2 Hal : 34-38
F.
Erwinia carotovora
1.
Pencegahan pasca panen terhadap serangan penyakit busuk lunak pada kubis dengan senyawa kapur tawas dan silika gel. Pengendalian busuk basah pada kubis secara kultur teknis. Peronospora parasitica (Fr) Tul Pengujian fungisida terhadap Peronospora parasitica (Fr) parasitica (Fr) Tul pada tanaman kubis di persemaian. Pengendalian embun bulu (Peronospora parasitica Pers. parasitica Pers. Ex. Fr) pada kubis di pesemaian.
Sjaifullah Besman Napitupulu Mass H. Lunis
Buletin Penelitian Hortikultura Th. 1988
Vol. XVI No. 1 Hal : 60-66
Hanudin I. Djatnika
Buletin Penelitian Hortikultura Th. 1993
Vol. XXV No. 1 Hal : 32-36
Harmidi Widjorini
Buletin Penelitian Hortikultura Th. 1976
Vol. IV No. 4 Hal : 23-26
Euis Suryaningsih
Buletin Penelitian Hortikultura Th. 1992
Vol. XXII No. 1 Hal : 64-70
2.
G. 1.
2.
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IV. 1.
PHT
Penerapan pengendalian hama terpadu pada tanaman kubis di Kecamatan Tomohon, Kabupaten Minahasa.
C.S. Rante D.T. Sembel M. Meray N.N. Wanta
Eugenia Oktober 1995
Vol. 1 No. 4 Th. XI Hal : 44-50
Pustaka penelitian pasca panen kubis No. 1.
Judul Pengaruh umur panen terhadap hasil dan mutu kubis
Penulis Sabari, dkk.
Publikasi Jurnal Hort. Vol 6 (5) 1997 : 477– 483
2.
Penilaian mutu fisik enam hibrida kubis
Ali Asgar, dkk.
BPH. Vol XVI (2) 1988: 107-110
3.
Penilaian mutu kimia enam macam kubis hasil Ali Asgar, dkk. silangan
BPH. Vol XVI (4) 1988: 14
4.
Pencegahan pascapanen terhadap srg. penyakit busuk lunak pada kubis dengan senyawa kapur tawas dan silikagel
Syaifullah, dkk.
BPH. Vol XVI (1) 1988: 60 – 66
5.
Studi orientasi dan inventarisasi cara dan alat pengiriman kubis antar pulau
Darkam dkk.
Pros. Seminar Ilmiah Nas.Sayuran. 1995. 582590
6.
Perlkuan prapanen untuk mempertahankan kualitas dan hasil krop kubis
Marsono
7.
Pembuatan kimchi dari limbah kubis; Pengaruh konsentrasi garam, lama dan lokasi fermentasi
P. Sihombing, LHP-BPH. 1982/1983: 66 dkk. – 73
M.,
Hortikultura. No 25, 1989: 42 - 43
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Pustaka penelitian agro-ekonomi kubis No.
Judul
Penulis
Publikasi
1.
Pengaruh penggunaan tenaga kerja dan pestisida terhadap pendapatan bersih usahatani kubis
Adiyoga, W.
Bul. Penel. Hort. XI (4) 1984: 20-25
2.
Pengaruh tumpangsari terhadap tingkat produksi dan pendapatan usahatani kubis
Adiyoga, W.
Bul. Penel. Hort. XII (4) 1985: 8-18
3.
Analisis usahatani kubis di Sumatera Barat (Studi kasus di Desa Galagah, Kabupaten Solok)
Arifin, M. dan G. S. Hardono
Bul. Penel. Hort. XXII (3) 1992: 90-98
4.
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Nurmalinda dan
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M. Ameriana Adiyoga, W.
Bul. Penel. Hort. XXVII (4) 1995: 34-39 Jurnal Hort. 7 (3) 1997: 840-851