Effects of Different Drip Irrigation Levels on the Yield and Water Productivity of Silage Maize under Pulsed and Continuous Management

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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:

In order to evaluate the effects of different irrigation levels under pulsed and continuous management on the biological yield and water productivity of silage maize, an experiment in the form of split plot in completely randomized block design with three replications was performed in Varamin. The main factors included four irrigation levels of applying 120 Percent, 100 Percent, 80 Percent and 60 Percent (I_2, I_1, I_3 and I_4, respectively) of maize water requirement and the sub-main factors included two pulsed (p) and continuous (c) irrigation management strategies. The results of the statistical analysis showed that the highest biological and fresh yields were obtained in PI_2 treatment equal to 26 and 86.67 (ton/ha) and the highest water productivity was obtained in PI_3 treatment equal to 6.72 kg / m^3. According to the results, in regions faced with water scarcity, application of deficit irrigation treatment with pulsed management (PI3) is recommended to save 20 Percent of water consumption. If there is no restriction in water availability, over-irrigation treatment under pulsed management (PI2) can be recommended to increase maize yield.

Language:
Persian
Published:
Journal of Water and Irrigation Management, Volume:11 Issue: 2, 2021
Pages:
87 to 98
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