Effect of Biophos and Phosphate Levels on Growth and Yield of Groundnut and Available Nutrient Status of the Soil

A field experiment was conducted to study the effect of biophos and phosphate levels on plant growth, yield of groundnut and availability of nutrients in Sawargaon soil series. The highest pod, haulm yield, 100 kernel weight, shelling percentage and protein content in kernel of groundnut was obtained in treatment 100 %RD of P205+ Biophos 2.50 kg ha-1.The yield and yield contributing characters were gradually increased with increase in levels of phosphorus with and without biophos inoculation.There was significant increase in available nitrogen and phosphorus whereas potassium was gradually increased with increase in levels of phosphorus and biophos. The available phosphorus and potassium decreased with advance growth period of the crop; whereas the nitrogen content was not decreased in the soil at harvest.