Integrated Nutrient Approach: Role of Potassium and Zinc in Yield and Quality Optimization of Cluster Bean (Cyamopsis tetragonoloba L.)

Abstract

Background:  Clusterbean (Cyamopsis tetragonoloba L.) is a important crops in India's arid and semi-arid regions, grown for seed, manure, fodder and vegetables uses. Clusterbean is a major cash generating crop because its seeds contain galactomannan, which is kept in the endosperm and has industrial uses. Various kinds biotic and abiotic stress effect the crop at different stages of growth, resulting in decreased yield and growth. Aim: The study was conducted to examine the influence of varying potassium and zinc application levels determine on clusterbean development, yield parameters and quality. Methods: The research was conducted during the kharif season of 2022 at Crop Research Farm, SHUATS, Prayagraj, Uttar Pradesh. The experiment included ten treatment combination of potassium and zinc arranged in a randomized block design (RBD) with three replications. Results: Application of potassium and zinc significantly improved growth parameters, yield components and quality parameters such as cellulose, lignin and gum content. The combination of 25 kg ha-1 potassium and 20 kg ha-1 zinc recorded the highest plant height, nodulation, dry biomass, seed yield, stover yield and quality. Conclusion: Economic analysis revealed that this treatment also produced the highest net returns of Rs. 54118.66 ha-1 and B:C ratio (2.32). Optimal application potassium 25 kg ha-1and zinc 20 kg ha-1 enhances the productivity, quality and profitability of cluster bean cultivation.