Effect of Nutrient Management through STCR Equation in Groundnut-Potato Cropping Sequence on Nutrient Uptake of Sequence

A field investigation on “Nutrient management through STCR equation in groundnut-potato cropping sequence” was carried out at PGI Research Farm, Mahatma Phule Krishi Vidyapeeth, Rahuri (M.S.) during the year 2014–15 and 2015–16 to study residual soil fertility status of groundnut-potato cropping sequence. The experiment was laid out in split plot design with 3 replications. The main plot comprised of 6 nutrient management treatments viz., STCR equation 20 q ha⁻¹ without FYM, STCR equation 25 q ha⁻¹ without FYM, STCR equation 30 q ha⁻¹ without FYM, STCR equation 35 q ha⁻¹ without FYM, GRDF and RDF. Sub plot treatments consisted of 3 fertilizer levels viz., Control (No fertilizer), 75% of RDF and 100% RDF. The uptake of N, P and K by groundnut plant, kernel and in total after harvest was influenced significantly GRDF recorded significantly higher uptake of N, P and K by plant, kernel and in total during both the years, respectively. However, the treatment GRDF was at par with STCR equation for 35 q ha⁻¹ without FYM, was during first year and second year. The uptake of N, P and K by potato plant, tuber and in total after harvest was influenced significantly GRDF recorded significantly higher uptake of N, P and K by plant, tuber and in total respectively, during both the years. Application of 100% RDF noticed significantly maximum uptake of N, P and K by plant, tuber and in total respectively, during both the years