Soil test crop response approach for optimizing integrated plant nutrient management supply for coriander in an inceptisol of eastern Uttar Pradesh

Abstract

Soil test crop response (STCR) correlation studies on coriander based on targeted yield approach was conducted on Inceptisol of Agricultural Research Farm, Banaras Hindu University, Varanasi during rabi 2018–19 by using integrated plant nutrient management system to get fertilizer recommendation equations for coriander. Soil test data, coriander grain yield and NPK uptake by coriander crop were used for achieving four important basic parameters viz., nutrients required to produce one quintal of coriander grain (NR), contribution of nutrients from fertilizers (%CF), contribution of nutrients from soil (%CS) and contribution of nutrients from organic matter FYM (%C-OM). Results indicated that 4.83, 0.80 and 4.10 kg of N, P2O5 and K2O, respectively were required for producing one quintal coriander grain yield. The per cent contribution of nutrients from soil, fertilizer and FYM were 21.2, 56.6 and 9.6 for N; 60.8, 39.3 and 2.38 for P2O5 and 25.5, 114.0 and 5.22 for K2O, respectively. Based on this information fertilizer prescription equations were developed to predict fertilizer recommendation for obtaining specific yield target of coriander. After the verification of these equations at farmer's fields, these can be used for fertilizer recommendations in Eastern Uttar Pradesh having similar soil and climatic conditions.