Comparative study of mop and distillery K for maximization of mung bean yield and nutrient uptake

This study evaluates the comparative efficacy of Muriate of Potash (MOP) and Distillery K in optimizing mung bean yield, nutrient uptake, and soil health sustainability. A field experiment was conducted at the National Sugar Institute, Kanpur, employing a randomized block design with nine treatments combining MOP, Distillery K, and their mixtures in varying proportions. The results revealed that plant height, pod weight, grain weight, and grain yield significantly increased with potassium application, particularly in treatments combining MOP and Distillery K. The highest plant height (42.3 cm), pod weight (9.87 g), and grain weight (5.61 g) were observed in T9, which included 125 % of the state-recommended potassium dose (60% MOP + 40% Distillery K). T9 also achieved the highest grain yield (1050.18 kg/ha) and straw yield (1743.30 kg/ha). Nutrient uptake showed a marked improvement with potassium supplementation. T9 recorded the highest nitrogen (109.43 kg/ha), phosphorus (10.40 kg/ha), and potassium uptake (66.58 kg/ha), reflecting enhanced nutrient assimilation. Potassium content in grains was highest in T9 (6.34%), highlighting the role of balanced potassium application in improving nutrient density. The study underscores the synergistic benefits of integrating MOP and Distillery K for enhancing mung bean yield and nutrient efficiency, advocating for a sustainable and cost-effective alternative to conventional fertilizers. This integrated approach improves soil fertility while promoting sustainable agricultural practices.