Document Details
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Document Type |
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Article In Journal |
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Document Title |
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The Relationship between Reference Evapotranspiration, Crop Yield, and Water use Efficiency for Alfalfa Crop under Different Irrigation Treatments in an Arid Climate العلاقة بين البخر - نتح معياري والإنتاجية وكفاءة استخدام المياه لنبات البرسيم تحت معاملات ري مختلفة في المناخ الجاف |
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Document Language |
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English |
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Abstract |
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ABSTRACT. The relation between the applied irrigation water, plant
water consumption and plant yield production are having the interest
of most investigators especially in arid regions such as the Kingdom
of Saudi Arabia, where water resources are limited. In this study, field
experiments were made to study the relationship between the applied
irrigation water, alfalfa plant (Hassawi cultivar) water consumption
by evapotranspiration (ET), alfalfa yield production (fresh and dry),
and water use efficiency during two successive seasons, summer 1997
and winter 1998. Four irrigation treatments were considered based on
four different soil moisture depletion ratios 9, 18, 36, and 55%,
respectively. The irrigation scheduling was designed for these four
treatments where, the different irrigation frequencies (1, 2, 4, and 6
days) and the corresponding water application rates were calculated.
A total of seventeen plant cutting was followed during the different
plant seasons, where these cuttings were illustrated as affecting factor
in crop ET and yield. The statistical analysis was made by considering
the irrigation treatments and plant cutting number as main effects
whereas the studying variables were plant ET, plant yield (fresh and
dry), and water use efficiency. The mathematical functions that fit for
the dry yield production (Yd) obtained during the summer with the
amount of applied irrigation water were linearism whereas, the function
during winter was linearism but relatively low. The function of
fresh yield production (Yf) with the amount of irrigation water during
summer was linearism but relatively low, and the function of fresh
yield and the amount of water applied during winter season was a
second-degree polynomial. The results showed that during summer
season, cut number has a significance effect on evapotranspiration,
the amount of irrigation water (W) and the Irrigation Water Use Efficiency
(IWUE). On the other hand, during winter season cut number
has a significant effect on all variables while irrigation treatment has
only significant effect on plant ET and the water use efficiency
(WUE). |
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ISSN |
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1319-1039 |
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Journal Name |
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Meteorology, Environment and Arid Land Agriculture Sciences Journal |
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Volume |
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15 |
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Issue Number |
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1 |
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Publishing Year |
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1424 AH
2004 AD |
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Article Type |
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Article |
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Added Date |
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Thursday, May 17, 2012 |
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Researchers
| احمد عثمان العمودي | AL-AMOUDI, AHMAD O | Investigator | Doctorate | aamoudi@kau.edu.sa |
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