Effect of a modified surface irrigation using gated pipes system on wheat crop [electronic resource].

Includes references.

The current study was carried out at Gehena, Sohag Governorate during 2008 season in clay soil, to study the effect of a modified surface irrigation system using gated pipe and precision land leveling on the wheat seeds and the percent of total losses of wheat grain. Wheat seeds (Giza168) was planted in 27/11/2008 and received 6 Irrigations. All the experimental treatment received the same agricultural practices as usual in the area. The results showed that:- The average depth of the infiltration for entire border irrigation was found to be approximately 53.57, 52.08, 51.05 and 50.25 mm for traditional leveling, 0.0%, 0.03% and 0.05% slope respectively. The advanced time decreased with 12.72, 16.36 and 21.82 % for 0.0%, 0.03% and 0.05% slope compared with traditional leveling respectively. The calculated value of (Du min) were 84.94, 88.33, 91.67 and 93.53 % for traditional leveling, 0.0%, 0.03% and 0.05% slope respectively. The application efficiency of low - quarter was Increased by increasing the percentage of border slope under modified Irrigation system. Distribution uniformity of low- quarter (DUlq) was increased by Increasing the percentage of border slope % under modified irrigation system. The water applied was 2785, 2070, 1940 and 1815 m³/feddan, for traditional leveling, 0.0%, 0.03% and 0.05% slope, respectively. The unthreshed grain increased from 2.3 to 5.8 % when grain moisture content Increased from 16 to 23 % respectively. The grain damage has the same trend it was increased from 2.1 to 2.7 %when grain moisture increased from 16 to 23 %, respectively. The grain diameter and weight of 100 seeds have the same trend as the grain diameter increased by 1.25, 3.66 and 6.40% for 0.0%, 0.03 and 0.05% slope, respectively. Compared with traditional leveling. The weight of 100 seeds increased by4.26, 10.0 and 11.76% for 0.0%, 0.03 and 0.05% slope, respectively, compared with traditional leveling.

Summary in Arabic.

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