Fertilizer Recommendations Developed through Soil Test Crop Response Studies with Integrated Plant Nutrient Management System for Field Pea in an Inceptisol

Abstract

A field experiment was conducted on Inceptisol at Agricultural Research Farm, Banaras Hindu University, Varanasi during rabi 2016 using integrated plant nutrient management system on the basis of STCR approach through which we are able to develop fertilizers recommendation equation for field pea. Soil test data, pea grain yield and NPK uptake by pea crop were used for achieving four important basic parameters viz., nutrients required to produce one quintal of pea grain (NR), contribution of nutrients from fertilizers (%CF), contribution of nutrients from soil (%CS) and contribution of nutrients from organic matter-FYM (%C-OM). It was found that 5.56, 0.79 and 3.08 kg of N, P2O5 and K2O, respectively were required for producing one quintal pea grain yield. The per cent contribution of nutrients from soil, fertilizer and FYM were 36.2, 133.7 and 12.6 for N; 51.7, 24.8 and 3.04 for P2O5 and 23.0, 71.4 and 10.0 for K2O, respectively. By using these basic parameters, ready reckoner of fertilizer doses was equipped for varying soil test values and desired yield targets of pea grain yield for NPK alone and NPK + FYM.