A successive summer and fall experiments were conducted to study the effect of deficit irrigation growing
seasons on the squash water status, total fruit yield and water use efficiency (WUE) in saline soil (ECe
12.6 dS m−1). Three treatment levels of actual evapotranspiration (ETc) were tested in each season. The
irrigations treatments were: (1) control, (100%) where irrigation was applied in order to avoid any considerable
soil water deficit. (2) DI85%, where deficit irrigation (85% of control irrigation regime) was applied
and (3) DI70%, where 70% of the control regime was applied. In well-watered conditions seasonal water
use by squash was 479 over 86 days in summer and 306 mm over 91 days in fall season, respectively.
Interaction between season and deficit irrigation treatment significantly affected plant water status as
evaluated by relative water content, canopy temperature, photosynthesis efficiency. Leaf area index (LAI),
total soluble solid (TSS), harvest index (HI), water-use efficiency, fruit weight, and fruit length have also
been affected.
A successive summer and fall experiments were conducted to study the effect of deficit irrigation growingseasons on the squash water status, total fruit yield and water use efficiency (WUE) in saline soil (ECe12.6 dS m−1). Three treatment levels of actual evapotranspiration (ETc) were tested in each season. Theirrigations treatments were: (1) control, (100%) where irrigation was applied in order to avoid any considerablesoil water deficit. (2) DI85%, where deficit irrigation (85% of control irrigation regime) was appliedand (3) DI70%, where 70% of the control regime was applied. In well-watered conditions seasonal wateruse by squash was 479 over 86 days in summer and 306 mm over 91 days in fall season, respectively.Interaction between season and deficit irrigation treatment significantly affected plant water status asevaluated by relative water content, canopy temperature, photosynthesis efficiency. Leaf area index (LAI),total soluble solid (TSS), harvest index (HI), water-use efficiency, fruit weight, and fruit length have alsobeen affected.
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