| Titles |
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English :
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Effect of soil moisture regime on yield and its components and water use efficiency for some wheat cultivars
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Arabic :
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تأثير الري عند استنفاد مستويات مختلفة من الرطوبة الأرضية على محصول القمح ومكوناتة وكفاءة استخدام مياه الري لبعض أصناف القمح
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| Abstract |
This research trial was conducted, during 2001/2002 and 2002/2003 seasons, at Gemmeiza Agric. Res. St., in order to investigate the influence of different irrigation regimes, i.e. irrigation as 40 – 45 (I1), 60 – 65 (I2) and 80 – 85 % (I3) of the available soil moisture depletion, on yield and its components and water use efficiency for eight wheat cultivars namely Sids 1, Gemmeiza 7, Sakha 8 Gemmeiza 9, Sakha 93, Giza 168, Gemmeiza 5 and Giza 170. The results can be summarized as follows:-
Subjecting wheat plants to drought-stress resulted in a significant reduction in grain yield, while the reduction in straw yield did not reach the significance level, and this was true in the two growing seasons of study. Regardless irrigation treatments, grain and straw yields were significantly differed, due to the tested wheat cultivars, in 1st season only. Yield components i.e. number of spikes/m2, number of grains/spike, grain weight/spike and 1000-grain weight seemed to be increased as the irrigation regime were increased. Moreover, these traits were significantly differed due the tested wheat cultivars. However, Gemmeiza 7 cultivar surpassed the other tested cultivars with respect the abovementioned traits except, number of spikes/m2 since Sids1 cultivar was the superior. Water Consumptive Use (CU) for tested wheat cultivars under study were significantly increased as water stress decreased. The highest CU value was recorded with Gemmeiza 9 cultivar. The tested wheat cultivars were significantly interacted with the adopted irrigation regimes with regard to water consumptive use. Water Use Efficiency (WUE) tends to increase significantly as irrigation regime decreased i.e. high stress condition. The highest WUE value was recorded for Gemmeiza 7 cultivar. The tested wheat cultivars were significantly interacted with the adopted irrigation regimes with regard to water use efficiency. Crop susceptibility factor (CS) indicates that the reduction in wheat yield was acceptable due to drought stress under I2 irrigation regime. Increasing drought condition i.e. I3 resulted in differentials higher CS values Sakha93 proved to be the most drought-tolerant wheat cultivar, compared to other tested ones, as an average of the two seasons. To save irrigation water without great impairing in grain yield, its recommended to irrigated the wheat plants after as a depletion of 60 – 65% of the available soil moisture under Gemmeiza conditions because of the reduction in grain yield is acceptable under such of irrigation regime
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| Publication year |
2004
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| Pages |
515-530
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| Availability location |
معهد بحوث المحاصيل الحقليه-مركز البحوث-8ش الجامعه الجيزة
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| Availability number |
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| Organization Name |
Field Crops Research Institute (FCRI)
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| City |
القاهرة
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| serial title |
حوليات العلوم الزراعية
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| ISSN |
0570-1783
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| Department |
Wheat Research
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| Author(s) from ARC |
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| Publication Type |
Journal
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