Soil fertility, nutrient uptake and yield of soybean as influenced by various levels of phosphorus in vertisols

Abstract

The present investigation entitled, “Soil fertility, nutrient uptake and yield of soybean as influenced by various levels of phosphorus in Vertisols” was undertaken during 2019-20 at Research Farm, Department of Soil Science and Agricultural Chemistry, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra. The experiment was laid out in Randomized Block Design with five treatments randomized in four replications. Among the various treatments, the significantly higher soybean yield was recorded with the application of 30:90:30 kg N, P2O5 & K2O ha-1 (T5) however, it was at par with 30:75:30 kg N, P2O5 & K2O ha-1 (T4) and 30:60:30 kg N, P2O5 & K2O ha-1 (T3). The total uptake of nutrients by soybean was significantly influenced by different phosphorus based treatments over control. However, uptake of nitrogen (136.67 kg ha-1) phosphorus (20.33 kg ha-1) and potassium (57.52 kg ha-1) were significantly highest with the application of 30:90:30 kg N, P2O5 & K2O ha-1 (T5) over the remaining treatments. Hence, it is concluded that the increasing levels of phosphorus along with recommended dose of nitrogen and potassium resulted in increased nutrient uptake as well as yield of soybean grown in Vertisols.