Document Type : Original Article
Authors
1
Assistant Prof, Department of Agricultural Engineering Research, Isfahan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization, Isfahan, Iran.
2
Research Instructor, Department of Agricultural Engineering Research, Hamedan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization, Hamedan
3
Assistant Prof, Department of Agricultural Engineering Research, Hamedan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization, Hamedan, Iran.
4
swri
Abstract
More attention to increase water productivity in water crisis and recent drought condition is needed. More attention to increase water productivity in water crisis and recent drought conditions is required. In this way, the use of pressurized irrigation systems as alternative instead of surface irrigation systems is recommended. Therefore, in this study, in order to assess the system performance and water productivity determination nine and ten potato fields in Isfahan and Hamedan Provinces respectively were evaluated for 2 years. Uniformity coefficients, water productivity, water use and potential and actual application efficiency of low quarter (PELQ، AELQ، CU and DU) were determined. Average of PELQ, AELQ, CU and DU in Isfahan were equal 61.5%, 58%, 66.8% and 75.8% and in Hamedan were equal 53.9%, 44.8%, 71.10%, 81.1% respectively. By determining the amount of water consumed and the yield of the product, the average water productivity of potato in Hamadan and Isfahan was estimated about 6.6 and 6.3 kg.m-3 respectively. The results of this study showed that in most of the studied farms, deficit irrigation used. The main issues on the results of these assessments can include factors such as non-compliance of design rules with the implementation phase and Unsuitable implementation, operational problems, and inadequate information on the operation and preservation of the system, and the mismatch of water consumption with the plant's water requirement. In addition, concurrent use of many sprinklers and using more than one sprinkler on laterals considered as the most important reason for low water distribution.
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