Effect of potassium and sulphur on nutrient content, uptake, quality and yield of summer groundnut (Arachis hypogaea L.)

Effect of potassium and sulphur on nutrient content, uptake, quality and yield of summer groundnut (Arachis hypogaea L.) was studied at the PG Research Farm, Agronomy Section, RCSM College of Agriculture, Kolhapur during summer, 2018. The experiment was laid out in factorial randomized block design (FRBD) with three replications and twelve treatment combinations of four potassium levels (K0- 00 kg K2O ha-1, K1- 15 kg K2O ha-1, K2- 30 kg K2O ha-1, K3- 45 kg K2O ha-1) and three sulphur levels (S1- 10 kg S ha-1, S2- 20 kg S ha-1, S3- 40 kg S ha-1). Mean N, P, K and S content in kernel and haulm was not influenced significantly by different potassium levels as well as sulphur levels. The mean N, P, K and S uptake, oil yield and protein yield of groundnut were maximum with application of 45 kg K2O ha-1 which was at par with 30 kg K2O ha-1, but significantly superior over rest of treatments and also it was maximum in application of sulphure @ 40 kg/ha, while in case of sulphure application they are maximum in application of 40 kg sulphure /ha. over rest of treatment. The dry pod yield (32.49 q ha-1) and dry haulm yield (44.86 q ha-1) were recorded maximum with application of 45 kg K2O ha-1 which was at par with 30 kg K2O ha-1, but significantly superior over rest of treatments. The dry pod yield (32.92 q ha-1), dry haulm yield (45.27 q ha-1) were recorded more with application of 40 kg S ha-1 which was at par with 20 kg S ha-1, but significantly superior over 10 kg S ha-1.