P rinci rinciple ples s of Fe F ert rtiga igattio ion n Grow Gro w More More Wit With h Le L es s Roy Peleg, Netafim
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Introduction Essential Elements Plant Disorders Fertigation Concepts Fertigation Devices Dosing Systems Summary Back Next Menu
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Introduction Essential Elements Plant Disorders Fertigation Concepts Fertigation Devices Dosing Systems Summary Back Next Menu
Needs of Plant Nee P lants s
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Supplying a Nitrogen, Phosphorus, Potassium and others minerals is essential for optimal plant growth.
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The nitrogen, phosphorus, potassium is main builder for proteins, amino acids, chlorophyll and enzymes.
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Introduction
Global Trends In Population Growth
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Introduction
Nutrient / Growth Ratio
Introduction
Luxury Range
d l e i Y , h t w o r G t n a l P
Adequate Range Toxicity Range
Deficiency Range
Content of Mineral Nutrients in Dry Plant Tissue
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Nutrient / Growth Ratio
d l e i Y , h t w o r G t n a l P
Introduction
Optimal Level Critical Deficiency Level
Critical Toxicity Level
Content of Mineral Nutrients in Dry Plant Tissue
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Nutrient / Growth Ratio Visible Deficiency Symptoms
d l e i Y , h t w o r G t n a l P
Introduction
Visible Toxicity Symptoms
Optimal Level Critical Deficiency Level
Critical Toxicity Level
Content of Mineral Nutrients in Dry Plant Tissue
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Plants Fertigation Is Based on Essential 16 Elements §
Essential Elements
Optimal plant fertigation will include 16 elements which are characterized as microelements consisting of Nitrogen – Phosphorus – Potassium as well as calcium magnesium and sulfur.
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Microelements consist of the following elements: Fe, Mn, Zn, Cu,Mo,B,Cl and H,O and C which are supplied as water (H20) and carbon bi oxide(CO 2).
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Nitrogen
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Nitrogen is the builder of proteins, amino acids, chlorophyll & enzymes.
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Essential Elements
Responsible for vigorous plant growth.
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Nitrogen
Essential Elements
Effect of Nitrogen on Yields of Sweet Basil (Ocimum basilicum L.) 160 140 t o P 120 r e p 100 M W
80 60
1.8
3.5
7 mmol/l
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14
28
Phosphorous
Essential Elements
Phosphorous (P) is vital to plant growth and is found in every living plant cell. Involved in several key functions: §
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Energy transfer & Photosynthesis Transformation of sugar and starches
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Nutrient movement within the plant
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Transfer of genetic characteristics
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Phosphorous Increases transformation of sugar and starches and energy transfer process
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Essential Elements
Potassium
Essential Elements
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Potassium compensates the osmotic pressure in the plant
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Potassium is located in the stomata's guard cell and neutraliz es charges differences
Without K
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With K
K Increases Protein Content in Corn 700
) a H / g K ( d l e i y n i e t o r P
Essential Elements
Protein yield = grain yield * % protein
600 500 400 300 200 100 0
0
110
Potassium (K2O Kg/Ha) Back Next Menu
175 Jiajiang, Sichuan, China 1999
Resulted from Inefficient Fertigation
Plants Disorder
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Keeping an accurate supply of nutrients to the plant, is crucial.
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Deficiency of nutrients could cause plants disorders.
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Disorders symptoms are usually seen on leafs or fruits.
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When symptoms are identified, damage is usually irreversible.
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Resulted from Inefficient Fertigation Nitrogen
Plants Disorder
Nitrogen deficiency in Bananas stem and leafs
Nitrogen deficiency in cucumber
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Resulted from Inefficient Fertigation Phosphorus
Red veins in tomato leafs as result of phosphorus deficiency
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Plants Disorder
Phosphorus deficiency in Avocado
Resulted from Inefficient Fertigation Potassium
Plants Disorder
Potassium deficiency in grape leafs Potassium deficiency Resulting with Cucumber leafs bleaching
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Calcium
Browning symptoms as result of calcium deficiency in lettuce
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Plants Disorder
Calcium deficiency Resulting with blossom end rot in Sweet pepper
Disorders in Plants
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Plants Disorder
Plan your fertigation strategy according to the crop needs, environment conditions and soil conditions.
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Use monitoring tools in order to adjust your strategy according to continuously changes.
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Keep proportional fertigation or just keep fertigation
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Choose the proper fertigation systems
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Use fertilizers coming only from reliable producers.
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The Onion Shaped Wetting Zone
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Fertigation Concepts
Fertigation Concepts
Fertigation Concepts
Quantitive fertigatio
Proportional Fertigation 60 n 50 o i t a g 40 i t r e F f 30 o y t i t 20 n a u Q10
70 r 60 e z i l i t r 50 e f f 40 o y 30 t i t n 20 a u Q10
0
0 1
2
3 Time minutes X 10
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4
5
1
2
3
Time minutes X 10
4
5
Uniform Wetting Points Along the Row
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Fertigation Concepts
Wetted Area By Dripper in Different Soils
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Fertigation Concepts
Advantages of Fertigation
Fertigation Concepts
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Nutrient requirements according to crop stages (teaspoon feeding).
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More uniform distribution and closer to root system.
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Better availability of nutrients to plants.
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Nutrient uptake increases.
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Reduced application losses of nutrients by leaching.
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Less costly application labor.
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Application flexibility (time, weather, soil).
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Fertigation Devices §
Pressure devices Fertilization tank Venturi injector
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Hydraulic Systems Quantitative hydraulic pump Proportional hydraulic pump
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Dosing units systems Principles Inline-Jet Bypass-Jet
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Fertigation Devices
Fertigation Tank
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Fertigation Devices
Venturi Injector
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Fertigation Devices
Proportional Hydraulic Pump
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Fertigation Devices
Quantitative Hydraulic Pump
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Fertigation Devices
NMC 64/15 & Dosing System The Netaget dosing unit ensures outstanding accuracy, homogeneous solution and simplicity User friendly controller consisting of: §
Large graphic display
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Flexible hardware structure
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Suitable for Irrigation and climate application
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Dosing System
Dosing Units Main Benefits §
State of the art technology ensures precise fertigation
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Unique hydro-mix technology
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Dosing channels based on Venturi injector with no moving parts
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Quick action valves
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EC/pH measurement and control
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Dosing System
Important Features
Dosing System
Quick Action Valves
Desired Set Point Offset Injector Coarse correction
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Fine correction
NetaJ et Types
Dosing System
System Inlet
Mixing chamber
System Outlet
pH
Netafim Inline-Jet: Flow rates: 5 – 20 m3/h
Netafim Bypass-Jet: Flow rates: 20 –100 m 3/h
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EC
Pump
c h M a i m x b i n e g r
Pump
pH EC
