Effect of Windbreaks and some Design Factors on Performance of Sprinkler Irrigation System | ||
| Journal of Soil Sciences and Agricultural Engineering | ||
| Article 2, Volume 8, Issue 7, July 2017, Pages 331-339 PDF (486.92 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jssae.2017.37528 | ||
| Authors | ||
| A. Awwad; A. Mohammed | ||
| Res. Agric. Eng. Res. Inst. A. R. C. Egypt. | ||
| Abstract | ||
| A field experiment was carried out during the successive growth season of 2015/2016 in order to study the effect of windbreaks and some factors of design on the performance of sprinkler irrigation system under open field conditions in sandy soil at Arab El- Awammer Research, Station, Agriculture Research Center- Assiut Governorate, Egypt. The objective of this work is to study the effect of presence or absence the windbreaks, height of rotating sprinkler, climatic conditions (temperature, wind speed and relative humidity) and layout of sprinkler irrigation on the spray evaporation loss, the actual water application, coefficient of uniformity (CU), distribution uniformity (DU), production yield and water use efficiency for sprinkler irrigation systems. The results indicated that; The lowest value of Spray evaporation loss (SEL) was 2.9% in Sep with height of rotating sprinkler (50cm) and the highest value of SEL was 9.6% in August with height of rotating sprinkler (70cm) with the presence of windbreaks. While with the absence of windbreaks, the lowest value of SEL was 10% in Sep with height of rotating sprinkler (50cm) and the highest value of SEL was 28.7% in August with height of rotating sprinkler (70cm). The wind speed increased by an average ratio 38%, the air temperature increased by an average ratio 15% and relative humidity decreased by an average ratio 40% at the windbreaks were completely absent. The highest coefficient uniformity and distribution uniformity were obtained in June, while the lowest coefficient uniformity and distribution uniformity were obtained in August during the presence of windbreaks. The presence of windbreaks increased the productivity of the crop more than the absence of windbreaks, with the same height of rotating sprinkler and the same layout, the maximum Pods yield and the highest percentage of water use efficiency by interaction between presence of windbreaks and the low height of rotating sprinkler (50cm). While, the lowest Pods yield and water use efficiency were produced due to interaction between the absence of windbreaks and the increasing height of rotating sprinkler to 70cm. | ||
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