Long-term effect of integrated nutrient management on soil macronutrient status in finger millet mono-cropping system

Abstract

Soil macronutrients were studied on Alfisols with a 40-years old experiment at All India Co-ordinated Research Project for Dry land Agriculture (AICRPDA), Gandhi Krishi Vignana Kendra, University of Agricultural Sciences, Bengaluru, during kharif 2018. Results indicated that continuous application of chemical fertilizers and manures increased the micronutrient availability in soil and uptake by finger millet. Long term integrated nutrient management showed significant higher values of available N of 345.35 kg ha-1, P2O5 of 66.58 kg ha-1, K2O content of 136 kg ha-1, for soils in a treatment T5 FYM @ 10 t ha-1 + 100% RDF. Lower values were recorded for the control T1 where no fertilizer was added. Similar trend of results were reported Nutrient content and nutrient uptake by finger millet for Application of FYM @ 10 t ha-1 + 100% RDF over a period of 40 years significantly increased the macronutrient content in soil and uptake by finger millet as against 100% NPK treatment and control.