Darwesh R. Kh. D. Kh. Farrag E. M. Okasha( 2020). Irrigation interval, oxygenated water and seed soaking for improving water productivity and squash productionPlant Archives Vol. 20, No. 2, 2020 pp.9157- 9169 e-ISSN:2581-6063 (online), ISSN:0972-5210
Abstract: A field experiment was conducted at Sakha Horticulture Research Station Farm, Kafr El-Sheikh Governorate under drip irrigation system, during the two growing seasons 2017 and 2018 to study the effect of irrigation periods as: every 4 days (I1); 6 days (I2) and 8 days (I3). It included also water quality; as mixed raw with ozonated water. In addition to hydrogen peroxide (Q1), hydrogen peroxide (Q2), ozonated water (Q3) and raw water (Q4). It referred to with seed soaking (S1) and without (S2) in a split-split plot design with three replications. The results showed that the highest values of applied water, and consumptive use were recorded under I1 in the two growing seasons and the values were 53.87 and 53.35 cm for applied water and 48.85 and 48.44 cm for consumed water in the first and second season, respectively. On the other hand, the highest mean values for water productively (WP), economic water productivity (EWP), productivity of irrigation water (PIW) and economic productivity of irrigation water (EPIW) were recorded under I3 the lowest applied and consumed water in the two seasons and the value tended to reduce, gradually, with increasing the irrigation applied water. Results showed also, all characteristics of squash yield, its component and quality were significantly affected by irrigation interval, water quality and soaking seeds in both seasons. All vegetative measurements, fruit yield, yield components and quality recorded the highest values under irrigation every 4 days, water quality mixed with ozonated water plus hydrogen peroxide and seed soaking in ozonated water in the two growing seasons
Keywords: (Irrigation interval, water productivity, oxygenated water, squash crop .)
