Performance of clusterbean (Cyamopsis tetragonoloba) under long-term prescription-based fertilizer recommendation in Western Rajasthan

To understand the impact of prescription-based fertilizer application on the performance of clusterbean [Cyamopsis tetragonoloba (L.) Taub.] crop in loamy sandy soil, we started an experiment in 2018 which consisted of 5 treatments; general recommended dose, prescription-based fertilizer recommendation for 1.5 and 2.0 t/ha without compost, prescription-based fertilizer recommendation for 1.5 and 2.0 t/ha with compost. The results revealed that, prescription-based fertilizer recommendation with compost for target yield 2.0 t/ha produced significantly 28.5 and 10.8% higher seed yield than general recommended dose and prescription based fertilizer recommendation for target yield 2.0 t/ha without compost respectively. Similarly, growth and yield attributes parameters such as plant height, leaf area/plant, pod length, clusters/plant, pods/cluster, pods/plant, seeds/pod and test weights were also found significantly higher under prescription-based fertilizer recommendation for target yield 2.0 t/ha with compost than the other treatments. The prescription-based fertilizer recommendation with compost for target yield 2.0 t/ha enhanced significantly macronutrients (N, P and K) content uptake, protein and chlorophyll content.