Evaluation of furrow fertigation on nitrogen supply and losses as a function of maize growth stages

Abstract The purpose of this study was to evaluate the effects furrow fertigation on nitrate deep leaching, runoff losses, and plant nitrogen supply in various growth stages maize ( Zea mays L.). Furrow experiment conducted 120 (W1), 100 (W2), 80 (W3), 60% (W4) levels required water (560 mm) (N1), (N2), 60 (N3), 0% (N4) fertilizer (184 kg N ha −1 ). N-fertilizer applied four split applications (before planting, at seven-leaf, shooting, flowering). In farmers’ conventional fertilization (FCF) method, 120% level 100% were used two planting seven-leaf stage). Results showed that highest aboveground content 3.11% for FCF treatments stage. maximum sensitive flowering stage grain yield also observed W2N1 treatment with 2.27% 12.93 ton , respectively. While, there no significant differences between W3N1, W2N2, W3N2. amounts leaching out 80-cm soil layer recorded treatment, followed by W1N1, W2N1, W3N1. Based content, losses yield, 80% irrigation could be recommended as optimal reduce improve yield.