Effect of varied levels of sulphur and sources of organic on yield, nutrient content and uptake by soybean crop (Glycine max. (L.)) in Alfisols of Karnataka

Abstract

A field experiment was conducted in farmer field at Palanahalli village, Magadi taluk, Ramanagara distinct to study the “Effect of Varied Levels of Sulphur and Sources of Organic on Nutrient Content and Uptake by Soybean Crop [Glycine max. (L.)] in Alfisols of Karnataka”. The experiment was laid out in RCBD with seventeen treatments and replicated thrice. The experimental results revealed that application of 100% RDF+ poultry manure at 6 t ha-1 + sulphur at 40 kg ha-1 through gypsum (T9) recorded significantly higher seed yield (26.90 q ha-1), haulm yield (44.15 q ha-1) and total uptake of major nutrients such as nitrogen (129.41kg ha-1), phosphorus (17.58 kg ha-1), potassium (75.47 kg ha-1), sulphur (32.41 kg ha-1) and micronutrients. Similarly, higher major nutrient contents such as nitrogen (2.71% and 1.25%), phosphorus (0.44% and 0.13%), potassium (1.23% and 0.96%), sulphur (0.86% and 0.21%) both seed and haulm respectively were recorded in the same treatment followed by application of 100% RDF + poultry manure @ 6 t ha-1 + 20 kg ha-1sulphur through gypsum. Higher yield, nutrient content and uptake this treatment may be due to effective utilization of NPK nutrients by the crop through inorganic fertilizers and organic manure (poultry manure) due to its easy solubility and better uptake of major and micronutrients nutrients.