Fertigation And Water Soluble Fertilizers

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Fertigation And Water Soluble Fertilizers


FERTIGATION

 Fertigation is a modern agro-technique which provides an excellent opportunity to maximize yield and reduce environmental pollution by increasing fertilizer use efficiency, minimizing fertiliser application and increasing return on fertiliser invested.It is the application of fertilizers through drip irrigation systems. Different water soluble fertilizers, micro nutrients and secondary plant nutrients can be applied through fertigation.


Benefits of fertigation

 

1.     Nutrients can be applied as per plant requirement uniformly.

2.     Acidic water soluble fertilizers help in cleaning the drip system.

3.     Nutrient  losses can be minimized with proper application dose.

4.     Time ,labour and energy can be saved.

5.     Fertigation suitable for both sandy and clay soils.

6.     Increase in crop yield by 20-30% and reduce in cost on fertilizer use.



Different Water Soluble Fertilizers for fertigation



Fertigation And Water Soluble Fertilizers




Fertigation Equipments

Fertigation ca be done by

1.     Venturi injector  

2.     Fertilizer tank    

3.     Fertigation pump




Precautions in fertigation.


  • The type of fertilizer for fertigation should be of high quality, with high solubility and purity, containing low salt levels and with an acceptable PH.

  • Make sure that the fertilizers used are compatible to prevent precipitation. Especially avoid mixing fertilizer solutions that contain calcium with solutions containing phosphates or sulphates.

  • use separate tanks for fertilizers that interact and cause precipitation. Example: in one tank Calcium, Magnesium and micronutrients and in another tank Phosphorus and Sulphate compounds results in safe fertigation.

  • Check the solubility and potential precipitation with local water. Before using new fertilizer, mix some fertilizer with one liter of irrigation water and observe for precipitation within 1-2 hours. If precipitates are formed avoid using that fertilizer.

  • Fertilizers used should have minimum or no clogging to fitters and emitters.

  • It should have a low corrosive property for the fertigation system.

  • Do not apply fertilizers in combination with pesticides. 

  • Avoid over irrigation as it causes leaching out the nutrients.

  • Daily or alternate day fertigation is recommended.

  • Use inline drippers instead of micro tubes for fertigation.


Foliar Spray (Spray on leaves)

 

Foliar spray is the method of applying fertilizers in solution form directly on plant leaves.

 

Recommendation

 

  • 2-3 sprays in a 15-20 days interval, after a good vegetative growth of the plant.

 

  • Mostly spray in 40-50 days after sowing and 60-70 days after sowing.

 

  • 1-2 kg required for one acre area for one time spray.

 

  • Recommended dose of water soluble fertilisers for foliar spray is 8-10 gm/liter of water.


* Recommendations are for information purpose only. Follow proper soil test and other plant requirement criteria and local agriculture officer’s guidance before application to crop.


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