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Document Type |
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Article In Journal |
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Document Title |
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Improvement of crop yield, soil moisture distribution and water use efficiency in sandy soils by clay application التحسن في إنتاجية المحصول؛ توزيع الرطوبة الأرضية وكفاءة استخدام المياه في الأراضي الرملية المعاملة بمكون الطين |
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Document Language |
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English |
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Abstract |
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Improvement of crop yield, soil moisture distribution and water use efficiency in sandy soils by clay application
Saleh M. Ismail a,&, Kiyoshi Ozawa b
a Soil and Water department, Faculty of Agriculture, Assiut University, Assiut, Egypt
b Japan International Research Center for Agricultural Science (JIRCAS) Okinawa Subtropical Station, Ishigaki Island, Okinawa, 907-0002 Japan
ABSTRACT
Cultivating sandy soil is a promising solution to overcome the fight against hunger especially in the developing countries. The main problems of sandy soil are water and nutrients deficiency. A containers experiment was carried out to study the enhancement of water productivity and crop yield of sandy soils treated with clay. The container size was 31×15×60 cm with one transparent side for visual viewing of the root development beside growth characteristics. The soil with bulk density of 1.5 g/cm3 mixed with CaCO3 and P2O5 fertilizers was packed in the containers to 50 cm height. Three treatments: control, overlay and incorporation with four replicates were studied. The control treatment was only sandy soil, 4% by weight of clay was overlaid on the surface of sandy soil to constitute the overlay treatment (5.6 kg soil with 21.4% clay overlay on 28.4 kg sandy soil with 93% sand) while the same percentage of clay was incorporated with the upper 20 cm of sandy soil to represent the incorporation treatment. All the treatments received the same amount of irrigation water and fertilizers during the growing stage.
The results indicate that the leaf area in cucumber and stem length, stem diameter and number of leaves in maize were increased in the treatments treated with clay. About 2.5 times of yield was obtained from those treatments compared to control. Roots grew intensively in the layers treated with clay. The incorporation treatment retained higher amount of water compared to control but with small differences compared to overlay treatment. The water use efficiency and water saving is highly increased by clay application and about 45%–64% of irrigation water can be saved compared with control. |
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ISSN |
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70-78 |
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Journal Name |
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Tenth International Water Technology Conference |
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Volume |
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37 |
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Issue Number |
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20 |
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Publishing Year |
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1428 AH
2007 AD |
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Article Type |
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Article |
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Added Date |
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Tuesday, September 6, 2011 |
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Researchers
| صالح محمود اسماعيل | Ismail, Saleh Mahmoud | Investigator | Doctorate | smibrahim@kau.edu.sa |
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