Effect of different level of NPK and biochar on soil physico - chemical properties, yield and attributes of green gram (Vigna radiata L.) Var. – RMG 975 (Keshwanand Mung 1)

An experiment was conducted on “Effect of Different Level of N P K and Biochar on Soil Physico - Chemical Properties and Yield Attribute of Green Gram (Vigna radiata L.) Var. RMG 975 (Keshwanand mung 1)” during Kharif season 2019-2020 at the Research Farm Department of Soil Science and Agricultural Chemistry, Naini Agriculture Institute, SHUATS, Prayagraj. The design applied was 3 x 3 Randomized block design having three factors with three level of N P K @ 0, 50, and 100 % ha-1 three level of Biochar @ 0, 50, 100 % ha-1 respectively. The result obtained with treatment T9 - [N P K @ 100 % + Biochar @ 100 %] that showed the physico - chemical properties of soil, gave the best results with respect to Biochar in combination resulted in a slight increase in soil pH 7.20 and electrical conductivity 0.17 ds m-1. In post soil of N P K fertilizers observations were resulted in significant increase in organic carbon 0.71 %, particle density 2.48 Mg m-3, bulk density 1.03 Mg m-3, porespace 51.00 % and available N 302.25 kg ha-1, P 32.99 kg ha-1, K 195.45 kg ha-1, significant increase in case of nitrogen (kg ha-1), phosphorus (kg ha-1), potassium (kg ha-1) was found to be significant among other treatments in green gram cultivation and soil quality improvement. It was also revealed that the application of N P K with Biochar was excellent source for fertilization than fertilizers.