Effect of Organic Amendments and Nano-Zinc Foliar Application on Alleviation of Water Stress in Some Soil Properties and Water Productivity of Barley Yield

The scarcity of water resources in arid and semi-arid areas is considered a threat to agricultural sustainability. Therefore, approaches are needed rationalize use irrigation without reducing crop productivity or degrading soil properties. objective this study was investigate the effect different organic amendments (O1 = control, O2 compost, O3 vermicompost) combined with rates nano- zinc foliar spraying (Zn1 0, Zn2 1 Zn3 2 gm/L), under supplements (I1 100%, I2 85%, I3 65% requirements) on clay characteristics, production Egyptian barley Giza 126. Over two successive winter growing seasons, 2018/2019 2019/2020, field experiments were conducted as split-split plot design three replications. results show that using vermicompost an appropriate amendment improve physical chemical properties soils compared compost. Application led reduction salinity (ECe), exchangeable sodium percentage (ESP), bulk density (BD), ?5.67%, ?5.44%, ?2.21%, respectively; there significant increase carbon (SOC), available nitrogen (A.N), capacity (F.C.), 43.75%, 14.37%, 18.65%, respectively, unamended (O1). maximum values for grain yield increased by 13.2% 14.9% both more than compost control. Vermicompost (1.69 1.69 kg m?3) straw (1.23 1.17 first second season, respectively. Similar trends also observed from treatments applied, stored water, application efficiency. nano-Zn could be exploited development growth yield, which enhanced water-saving strategies.