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Use Efficiency in the Intercropping Systems of Sorghum-Forage Amaranth
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Amir Saleh Baghdadi   , Farzad Paknejad , Farid Golzardi * , Masoud Hashemi , Mohammad Nabi Ilkaee |
| Assistant Professor of Seed and Plant Improvement Institute, Agricultural Research, Education and Effect of Different Irrigation Methods on Protein Production and Nitrogen Extension Organization, Karaj, Iran. |
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Abstract: (1222 Views) |
In order to investigate the effect of irrigation methods and intercropping systems of sorghum and forage amaranth on forage and protein production as well as nitrogen use efficiency, an experiment was conducted as split-plots based on randomized complete block design at the Seed and Plant Improvement Institute, Karaj, during the cropping years of 2018- 2019. Irrigation methods at three levels (conventional furrow irrigation, fixed and variable intermediate) as the main factor and different patterns of intercropping at six levels (including three row intercropping patterns, one intercropping pattern and two pure sorghum cultivation patterns and forage amaranth) as the sub-factor were reviewed. The results showed that the highest forage yield in conventional and fixed intermediate irrigation methods (77.36 and 49.39 tons per hectare, respectively) was obtained in mixed cultivation of 50% sorghum + 50% forage amaranth and pure sorghum cultivation, while in irrigation method intermittent intercropping treatments of sorghum and intercropping of 75% sorghum + 25% amaranth produced the highest forage yield. The highest protein content of forage amaranth and sorghum (109 and 75 gram per kilogram, respectively) was observed in the constant intermediate irrigation method, while the maximum protein yield (1217 kilogram per hectare) was obtained in the conventional irrigation method. The highest nitrogen uptake (231.35 kilogram per hectare) was obtained in conventional irrigation method by mixing 50% sorghum + 50% amaranth. In all irrigation methods, the highest nitrogen application efficiency was recorded in sorghum monoculture and then in 75% sorghum + 25% forage amaranth and mixed cultivation intercropping. In general, intercropping systems 50% sorghum + 50% forage amaranth and 75% sorghum + 25% forage amaranth can be recommended for conventional irrigation conditions and one among the variables and pure sorghum cultivation for constant intermediate irrigation conditions.
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| Keywords: Protein, Monoculture, Yield and Intercropping. |
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Full-Text [PDF 853 kb]
(2399 Downloads)
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Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2022/01/5 | Accepted: 2021/12/31 | Published: 2021/12/31
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