Principles of Nutrient Management To Provide nutrients to crop plants In required quantities Climate (Tropical/temperate) Type of crop (Legume/non legume) Season (Kharif/rabi/summer) Type of soil (Texturally, fertility status) in available forms Readily available Slowly available Fixed in the soil at right time Critical phase for nutrient Type of fertilizer/manure by right method Mobility of nutrient Type of nutrient (Macro/micro, soil/plant) Loss of nutrient (Volatilization/leaching)

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