Irrigation and Water Engineering

Irrigation and Water Engineering

Investigating the effect of salinity and deficit irrigation stress on the yield and yield components of millet in the climate conditions of Ilam

Document Type : Original Article

Authors
Yazdan khodarahmi 1
Amir Soltani Mohammadi 2
Saied bromand nasab 3
Hamzeh Ali Alizadeh 4
1 Ph.D. Student, Department of Irrigation and Drainage, Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran
2 Professor of Irrigation and Drainage Department, Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran
3 Professor of Irrigation and Drainage, Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Ahvaz. Iran
4 Assistant Professor of Water Engineering Department, Faculty of Agriculture, Ilam University, Iran
10.22125/iwe.2024.428535.1774
Abstract
This study was conducted with the aim of investigating the yield and yield components of Panicum millet plant under the conditions of combined stresses of salinity and deficit irrigation as a split plot experiment in a randomized complete block design with three replications and 48 treatments at the research farm, Faculty of Agriculture, Ilam University. Treatments included four levels of irrigation water salinity including 0.63, 3, 5 and 8 dS/m (S1, S2, S3 and S4 respectively) and four irrigation levels including 100, 80, 60 and 40 (w1, w2, w3 and w4 respectively) percentage of water requirement was done. The traits studied included leaf-to-stem weight ratio panicle length, plant height, shoot weight, thousand seed weight, seed yield and harvest index. The results showed that the applied salinity stress levels had a significant effect on harvest index traits, seed yield, thousand seed weight, shoot weight, panicle length and plant height at the 5% and there was no significant difference only on the leaf-to-stem weight ratio trait. The combined effect of salinity and deficit irrigation stress on all traits except for panicle length was significant at the 5%. Millet in the conditions of no stress (S1W1) and the highest level of stress (S4W4) applied in this study could yield 3.76 and 1.71 tons per hectare, respectively.
Keywords
Split plot
Deficit irrigation
Salinity stress
Salty soil
Yield
Subjects
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