IMPROVING BARLEY PRODUCTION UNDER DEFICIENT IRRIGATION WATER AND MINERAL FERTILIZERS CONDITIONS

Scarcity in irrigation water led to a gradual increase stress, consequently causing decrease dry matter, nitrogen uptake, productivity, and the protein content of barley. During two growing seasons, 2020–2021 2021–2022, field experiments ensued improve barley production sandy soil under deficit water. The statistical analysis helped recommend best factors achieve maximum benefit with conditions mineral fertilizers. significant variations occurred when irrigating 60% full only, but were nonsignificant 80% irrigation. Increasing number fertilization doses nine times resulted higher concentrations availability inside root-spreading area for longest possible period without washing outside by deep percolation than given three only. Irrigating dosages obtained highest yield values. It 20% reduction use increased fertilizer effectiveness through repeated application doses, resulting productivity less groundwater pollution. simulation model received SALTMED values high accuracy most studied traits; R2 was not 0.97; therefore, it can function well conditions, which suffer from scarcity.