Effect of Level of Sulphur and Phosphorus on Yield and Quality of Soybean Grown in Inceptisol

Abstract

The field experiment was conducted during Kharif 2017 at Post Graduate Research Farm, Rajarshee Chhatrapati Shahu Maharaj, College of Agriculture Kolhapur, with the view to study the effect of levels of sulphur and phosphorus on yield and quality of soybean grown in inceptisol. The soil of the experimental site was slightly alkaline in reaction, very low in available nitrogen, medium in available phosphorus and medium in available potassium and deficient in available sulphur. The field experiment was carried out in Factorial Randomized Block Design with three replications and sixteen treatments comprising four levels of sulphur (0, 20, 40, and 60 kg ha-1) through elemental sulphur and four levels of phosphorus (0, 75, 100, and 125 kg ha-1) through DAP. The result indicated that the significantly highest grain yield (27.20 q ha-1, 25.04 q ha-1 respectively) was recorded by application of sulphur and phosphorus at 60 kg ha-1 (S4) and 100 kg ha-1 (P3) than rest of the sulphur and the phosphorus levels. The application of (S4, P3) at 60 kg ha-1 and 100 kg P ha-1 showed significantly highest straw yield (38.85 q ha-1, 35.50 q ha-1 respectively) than rest of the combination of sulphur and Phosphorus levels. The quality parameter records highest percent of 1000 grain weight, oil content and oil yield were found in 60 kg S along with 100 kg P ha-1 while the lowest seed yield, 1000 grain weight and oil content were found in control. Therefore, application of 60 kg S with 100 kg P appeared as the promising practice for obtaining higher seed yield and better quality of Soybean.