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FertigationFor nutrient management
Dr. Narender K Sankhyan Scientist (Soils)
Department of Soil Science, College of Agriculture, CSK HP Agricultural University, PALAMPUR (HP)
Fertigation is the application of fertilizers, soil amendments, or other water soluble products through an irrigation system.
Low nutrient use efficiency
Nutrient Efficiency (%)
Cause of low efficiency
Nitrogen 30-50 Immobilization, volatilization, denitrification, Leaching
Phosphorus 15-20 Fixation in soils Al – P, Fe – P, Ca – P
Potassium 70-80 Fixation in clay - latticesSulphur 8-10 Immobilization, Leaching with
water Micro nutrients (Zn, Fe, Cu, Mn, B)
1-2 Fixation in soils
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