Effect of soil moisture stress and some agronomic practices on wheat production and irrigation efficiencies [electronic resource].

Includes reference.

Two field experiments were conducted in 2000/2001 and 2001/2002 growing seasons at Sakha Agric. Res. Station to study the effect of three varieties of wheat i.,e. Sakha 69, Sakha 8 and Sids 1), water stress (irrigation at 50% and 75% depletion of the available soil moisture (DAM), land levelling practices (laser & Traditional) and two methods of planting (driil and broadcasting) under non salt clayey affected soils on wheat production and some water relations. Split-split-split plots design with four replicates was used. Varieties occupied the main plots, while irrigation treatments were placed the sub plots, land levelling practices arranged in sub-sub plots and the seedbed planting methods were the sub-sub-sub plots. Results revealed that: 1. Sakha 69 variety with irrigation at 50% DAM, precision-levelling (laser) and drill planting method were the best combination which obtained significantly exceeded plant height (3.6%), panicle length (14.49%), 100 grain weight (9.91), grain and straw yields (12.36% and 7.09%), respectively. 2. Irrigation at 50%. depletion of the available soil moisture (DAM), traditional land levelling and broadcasting method of planting under sakha 69 variety received the highest amount of irrigation water requirements (2391.40 and 2241.73 m³/fed.) and consumed more water (1783.11 and 1664.30 m³/fed.) more than the other treatments in the first and second seasons, respectively.

Summary in Arabic.

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