Splitting nitrogen fertilization improves growth, yield and profit of soybean (Glycine max) production in the semi-arid Afghanistan

The objectives of this study were to evaluate the effects splitting application 30 kg N ha-1 on growth, yield and economics soybean (Glycine max var. Dea-won) in semi-arid sub-tropical Afghanistan. Besides no-N-fertilization control, urea (30 ha-1) was applied fields four-splits: S1, one time basal at sowing; S2, two-splits 50% sowing 10 DAS (days after sowing); S3, three-splits 33% sowing, 20 DAS; S4, four-splits 25% 10, DAS. Aboveground growth parameters compared 30, 60, 90 127 Soybean’s yields increased corresponding with frequency split fertilization. Three- or significantly plant height, leaf area index, aboveground biomass, crop rate, net assimilation relative pod seed numbers, 1,000-seed weight, production (gross returns benefit cost ratio) than those N-application all these four harvests. Positive relationships observed among traits production. tested rate stages can meet requirement for soybean’s while improving use efficiency