Investigating the effect of irrigation method on onion yield under drought stress

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Arabi Aysk Mehdi; Pourreza Bilondi Mohsen; Yaghoobzadeh Mostafa; Azarmi Atajan Farhad

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Journal: Journal of New Approaches in Water Engineering and Environment Year:2023 | Volume:2 | Issue:2 Page(s): 99-112

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Title

Investigating the effect of irrigation method on onion yield under drought stress

Author(s)

Arabi Aysk Mehdi | Pourreza Bilondi Mohsen | Yaghoobzadeh Mostafa | Azarmi Atajan Farhad | Issue Writer Certificate

Keywords

edible onionQ4

irrigation methodQ4

deficit irrigationQ4

water use efficiencyQ4

Abstract

Water is the most important factor limiting agriculture in the country. For this purpose, the effect of two irrigation methods (basin irrigation and tape irrigation) and three irrigation levels (50, 75 and 100 percent of the plant's water requirement) on the performance of edible onion plants in Aysk city, which has a relatively hot and dry climate, was studied. Was investigated. This research was done factorially in the form of randomized complete block design with four replications in two crop years 2017-2018. The results showed that the yield of onion under the influence of different levels of irrigation, the highest effect is in the yield related to the treatment of 100% water requirement and the lowest related to the treatment of 50% water requirement. Also, in terms of onion water consumption efficiency, it was found that Tape irrigation method with an average of 4. 69 kg per cubic meter of water is 45. 4% more than the basin method with an average of 2. 56 kg per cubic meter of water. Also, the effect of different levels of irrigation on the efficiency of water use in 100% water demand with an average of 4. 64 kg per cubic meter of water was not much different from the treatment of 75% water demand with an average of 17. 4 kg per cubic meter of water. As a result, tape irrigation with a stress level of 75% of the plant's water requirement is the most appropriate method and irrigation water level for onion plants in this region.

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