Effect of Drip Fertigation under Different Fertilizer Levels on Nutrient Status in Coconut (Cocos nucifera L) Leaf

A study was conducted during 2017-18 under the All India Co-ordinated Research Project initiated in 2009 at research farm of Bihar Agricultural University, Sabour, Bhagalpur. The aim this compare nutrient concentration coconut leaves different levels through drip fertigation a Randomized Block Design (RBD) with four (4) replications. Result observed that leaf Nitrogen, Phosphorous, Sulphur, Iron, Manganese, Copper and Boron content treatments were not significantly from each other. micronutrients found to increase increasing fertilizer treatments. Cation Exchange Capacity positively correlated all nutrients. Organic carbon did show remarkable relation plant parameters. Soil K three depths elements. pH value P which explains is directly proportional soil value. Electrical conductivity (EC) also P, B leaf. Correlation coefficient between CEC contents 2nd depth more important for mineral nutrition palm. values content. Higher correlation lower available sulphur coconut. This result suggests inherent supplying capacity micronutrient experimental so influential higher growth, but application N, fertilizers trigger absorption soil. Under NPK levels, applied does have significant effect on S, Zn after five (5) years experimentation while be few elements like K, Fe, Mn, Cu, B. An trend application.