Iranian Journal of Irrigation & Drainage

Iranian Journal of Irrigation & Drainage

Wheat water management indicators in both surface and Sprinkler irrigation systems (Case study upstream of Karkheh basin)

Document Type : Original Article

Authors
Mohammad Mehdi Nakhjavanimoghaddam 1
shahram ashrafi 2
Saloome Sepehri 3
1 Agricultural Engineering Research Institute (AERI)
2 Assistant Professor, Agricultural Engineering Research Institute (AERI), Agricultural Research Education, and Extension Organization (AREEO), Karaj, Iran
3 A faculty member of irrigation and drainage department of Agricultural Engineering Research Institute
Abstract
Determining and analyzing the indicators of water management for the crops of the country plays an important role in the planning of the agricultural sector.This study was accomplished to investigate water management indicators of irrigation systems in Wheat production in the upstream region of Karkheh basin and specifically Honam plain in Lorestan province. 14 wheat farms were selected in the mentioned area and were subjected to agronomic and water monitoring during the cropping season. Wheat applied irrigation water was determined by recording the irrigation schedule and measuring the flow rates. The water requirement of wheat was estimated by Penman-Monteith method and by applying plant coefficients. The yield and water productivity for wheat farms were obtained at the maturity stage. The results of agronomic and water monitoring of selected wheat fields showed that the type of agricultural, irrigation and fertilizer management of farmers played an important role in the amount of grain produced. Irrigation applied water, yield and WP was statistically different during the growth season for the farms. The average yield, the volume of irrigation water, the productivity of the irrigation water and the productivity of the applied water of wheat in the sprinkler irrigation system were equal to 6845 kg/ ha, 2325 m3/ha, 3 and 1.52 kg/ m3, respectively, and in the surface system equal to 5000 kg/ ha, 3237 m3/ha, 1.3 and 0.94 kg/ m3, respectively. The monitoring of the irrigation program in the selected fields showed that the farmers irrigated the mentioned fields on average 41% less than the full irrigation requirement of the plant. One of the important reasons for this is the special attention of farmers in the region to plant crops with high profitability, such as alfalfa and clover, despite the need for more water than wheat.
Keywords
Irrigation
Honam
Water productivity and Wheat
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Iranian Journal of Irrigation & Drainage
Volume 18, Issue 2 - Serial Number 105
July and August 2024
Pages 217-225