Foliar Application of Zinc Improves Agronomical and Quality Parameters and Biofortification of Cowpea (Vigna sinensis) under Deficit Irrigation

Due to climate changes, we encounter irregular and low rainfall. It is important effectively use groundwater select crops that can be grown with deficit irrigation in the summer period. Restricted reduces water consumption but it may cause losses terms of yield quality. Different agronomic practices used minimize these losses. One application foliar zinc fertilizer. In previous studies, was found increase bioavailability cowpea grain. this study, effects fertilizer on yield, some components, physiological traits, grain quality characteristics three different genotypes (Akkız, Karagöz, a Local variety) were investigated under full (100%) (50%) irrigation. The field experiment conducted using randomized complete block split–split plot design rates (100% 50%) (0 60 kg ha−1) replicates each season (2020 2021 growing seasons cowpea) trial fields Aydin Adnan Menderes University, at Faculty Agriculture, located western region Turkey. Yield such as protein content, mineral matter amino acid content measured. According data obtained, 40% reduction observed restricted first year study. determined increased by approximately 10%. second-year results amount essential acids histidine, phenylalanine, valine, lysine application. This study highlights conditions caused stress plant Still, severity reduced application, positively affected cowpea.