Low - Fertigation Principles Netafim Vers4
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Transcript of Low - Fertigation Principles Netafim Vers4
Principles of Fertigation Grow More With LessRoy Peleg, Netafim
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Introduction Essential Elements Plant Disorders Fertigation Concepts Fertigation Devices Dosing Systems SummaryBack Next Menu
Needs of Plants Supplying a Nitrogen, Phosphorus, Potassium and others minerals is essential for optimal plant growth. The nitrogen, phosphorus, potassium is main builder for proteins, amino acids, chlorophyll and enzymes.
Introduction
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Global Trends In Population Growth
Introduction
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Nutrient / Growth Ratio
Introduction
Luxury Range
Plant Growth, Yield
Adequate Range Toxicity Range
Deficiency Range
Content of Mineral Nutrients in Dry Plant Tissue
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Nutrient / Growth Ratio
Introduction
Plant Growth, Yield
Optimal Level Critical Deficiency Level Critical Toxicity Level
Content of Mineral Nutrients in Dry Plant Tissue
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Nutrient / Growth RatioVisible Deficiency Symptoms
Introduction
Visible Toxicity Symptoms
Plant Growth, Yield
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.
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(CO2).
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Nitrogen
Essential Elements
Nitrogen is the builder of proteins, amino acids, chlorophyll & enzymes. Responsible for vigorous plant growth.
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Nitrogen160 140WM per Pot
Essential Elements
Effect of Nitrogen on Yields of Sweet Basil (Ocimum basilicum L.)
120 100 80 60 1.8 3.5mmol/l
7
14
28
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Phosphorous
Essential Elements
Phosphorous (P) is vital to plant growth and is found in every living plant cell. Involved in several key functions: Energy transfer & Photosynthesis
Transformation of sugar and starches Nutrient movement within the plant Transfer of genetic characteristics
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PhosphorousIncreases transformation of sugar and starches and energy transfer process
Essential Elements
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Potassium
Essential Elements
Potassium compensates the osmotic pressure in the plant Potassium is located in the stomata's guard cell and neutralizes charges differences
Without K
With K
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K Increases Protein Content in Corn700
Essential Elements
Protein yield = grain yield * % protein
Protein yield (Kg/Ha)
600 500 400 300 200 100 0 0 110 175Jiajiang, Sichuan, China 1999
Potassium (K2O Kg/Ha)Back Next Menu
Resulted from Inefficient Fertigation
Plants Disorder
Keeping an accurate supply of nutrients to the plant, is crucial. Deficiency of nutrients could cause plants disorders. Disorders symptoms are usually seen on leafs or fruits. 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
Plants Disorder
Red veins in tomato leafs as result of phosphorus deficiency
Phosphorus deficiency in Avocado
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Resulted from Inefficient Fertigation Potassium
Plants Disorder
Potassium deficiency in grape leafs Potassium deficiency Resulting with Cucumber leafs bleachingBack Next Menu
Calcium
Plants Disorder
Browning symptoms as result of calcium deficiency in lettuce
Calcium deficiency Resulting with blossom end rot in Sweet pepper
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Disorders in Plants
Plants Disorder
Plan your fertigation strategy according to the crop needs, environment conditions and soil conditions. Use monitoring tools in order to adjust your strategy according to continuously changes. Keep proportional fertigation or just keep fertigation Choose the proper fertigation systems Use fertilizers coming only from reliable producers.
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The Onion Shaped Wetting Zone
Fertigation Concepts
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Fertigation Concepts
Fertigation Concepts
Proportional Fertigation60
Quantitive fertigation70 Quantity of fertilizer 60 50 40 30 20 10 0 1 2 3 4 5
Quantity of Fertigation
50 40 30 20 10 0 1 2 3 Time minutes X 10 4 5
Time minutes X 10
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Uniform Wetting Points Along the Row
Fertigation Concepts
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Wetted Area By Dripper in Different Soils
Fertigation Concepts
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Advantages of Fertigation
Fertigation Concepts
Nutrient requirements according to crop stages (teaspoon feeding). More uniform distribution and closer to root system. Better availability of nutrients to plants. Nutrient uptake increases. Reduced application losses of nutrients by leaching. Less costly application labor. Application flexibility (time, weather, soil).
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Fertigation Devices Pressure devices Fertilization tank Venturi injector Hydraulic Systems Quantitative hydraulic pump Proportional hydraulic pump Dosing units systems Principles Inline-Jet Bypass-Jet
Fertigation Devices
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Fertigation Tank
Fertigation Devices
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Venturi Injector
Fertigation Devices
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Proportional Hydraulic Pump
Fertigation Devices
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Quantitative Hydraulic Pump
Fertigation Devices
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NMC 64/15 & Dosing SystemThe Netaget dosing unit ensures outstanding accuracy, homogeneous solution and simplicity User friendly controller consisting of: Large graphic display Flexible hardware structure Suitable for Irrigation and climate application
Dosing System
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Dosing UnitsMain Benefits State of the art technology ensures precise fertigation Unique hydro-mix technology Dosing channels based on Venturi injector with no moving parts Quick action valves EC/pH measurement and control
Dosing System
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Important Features
Dosing System
Quick Action Valves
Desired Set Point Offset Injector Coarse correction Fine correction
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NetaJet TypesSystem Inlet
Dosing System
Mixing chamberpH
System Outlet
Netafim Inline-Jet: Flow rates: 5 20 m3/hPump
EC
Mixing chamber
Netafim Bypass-Jet: Flow rates: 20 100 m 3/h
pH EC
Pump
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Summary
Summary
Fertigation is one of the major foundations for a plant growth Optimal plant fertigation will include 16 elements Keeping accurate nutrient content is very important for optimal growth and maximum yield Deficiency of nutrients could cause plants disorders Preventing fertigation disorders in Plants is based on good monitoring, keeping proportional fertigation and choosing the proper fertigation system.
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