Response of different levels of nitrogen, potassium and PSB on growth and yield attributes of greengram (Vigna radiata L.)

Abstract

The experiment was conducted during the zaid season of 2018 in the Crop Research Farm, Department of Agronomy, Naini Agricultural Institute, Sam Higginbottom University of Agriculture Technology & Sciences, Allahabad. The experiment was laid out in Randomized Block Design. The three factors are Nitrogen, Potassium and PSB. PSB has two levels i.e. inoculated and un inoculated, two levels of Nitrogen @ 10 kg/ha and 20 kg/ha, and two levels of Potassium 15 kg/ha and 20 kg/ha respectively comprising of nine treatment combinations each replicated thrice. Treatments were randomly arranged in each replication, divided into twenty seven plots. It is concluded that treatment T5 [N (20Kg/ha)+K(20Kg/ha) + PSB(I)] was found to be the best treatment for obtaining higher growth and yield attributes viz., plant height (46.47 cm) at 60 DAS, dry weight (16.930 g) at 60 DAS, Crop Growth Rate (9.78 g m-2 day-1) at 60 DAS, number of branches/plant (5.88) at 60 DAS, number of nodules/plant (30.89) at 45 DAS, number of pods/plant (16.33) and test weight (40.33 g) were obtained with green gram whereas, Relative Growth Rate and number of seeds/pod were found to be non- significant.