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Investigation of the Role of Biochar and Change of Cultivation Pattern in Alternate Irrigation Conditions on Morphological Traits, Dry Forage Yield and Water Use Efficiency of Forage Sorghum
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Sara Darvishi Aghajani   , Ghorban Noor Mohammadi , Mojtaba Alavi Fazel * , Mohammad Reza Ardakani , Mansour Sarajughi |
| Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran. |
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Abstract: (945 Views) |
Under the water deficiency conditions by local irrigation method, suitable planting pattern and biochar can be used as an acceptable strategy to increase water use efficiency. For this purpose, the present experiment was performed on forage sorghum in the form of split-split plots in a randomized complete block design with three replications in the cropping years of 2016-2017 and 2017-2018 in the farm of Islamic Azad University, Karaj Branch. Local irrigation included full irrigation (control), constant alternate irrigation and variable alternate irrigation in the main plot, one-row cultivation pattern (control) and two-row irrigation in the sub-plot and biochar at three levels of non-consumption (control), six and twelve tons per hectare was considered in the sub-sub plot. Comparison of the average irrigation treatment of constant alternate irrigation and biochar six tons per hectare showed the highest water use efficiency with an average of 8.73 kilogram per cubic meter. Also, the trend of decreasing dry forage yield in constant alternate irrigation treatment and biochar six tons per hectare with an average of 19188.32 kilogram per hectare is less severe than variable alternate irrigation and biochar six tons per hectare with an average of 15453.61 kilogram per hectare. Based on the results, the use of biochar as a modifier and retainer of water in the soil, especially in conditions of water restriction is recommended.
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| Keywords: Forage sorghum, Biochar, Cropping pattern and Alternate irrigation. |
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Full-Text [PDF 1152 kb]
(1979 Downloads)
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Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2022/01/10 | Accepted: 2021/12/31 | Published: 2021/12/31
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