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Effect of wheat planting density and different dose of Sulfosulfuron herbicide on weed control and wheat (cv. Chamran) grain yield under Shoushtar environmental conditions
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Adel Modhej *   |
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Abstract: (85 Views) |
Introduction: Wheat (Triticum aestivum L.) is one of the most important crops that provides a major part of worldwide human food. The yield of this crop in different cultivation areas is limited due to biological and non-biological stresses. Weeds are considered as one of the most important biological factors that reduce the yield of wheat in the world and cause significant damage to the production of this crop.
Materials and methods: This experiment was conducted under Shoushtar conditions in 2018-2019 cropping season. Experimental factors included 3 herbicide, Sulfosulfuron, doses (complete weeding, 75 and 100 % of the recommended dose) and wheat (Triticum aestivum) planting densities (300, 400, 500 and 600 viable seed.m-2). Common mallow (Malva Sylvestris) was the dominant weed in the field experiment.
Results: The results indicated that the effect of herbicide doses, wheat density, and their interaction on weed control efficiency (WCE) was significant at 1% probability level. WCE recommended herbicide dose was 90%. Recommended and reduced herbicide doses had no significant differences in the case of WCE. Seed density significantly influenced mallow seed number production. Weed seed production in 300 and 600 planting density treatments was 5282 and 135 seeds per meter square. The highest and the lowest wheat grain yields belonged to 100 and 75% of recommended herbicide doses. Wheat grain yield reduction was 16% when a reduced herbicide dose was used. Grain yield reduction in this treatment was due to lower weed control and wheat grain No. per spike.
Conclusion: The highest grain yield belonged to 100 recommended herbicide doses and 500 seed.m-2. Generally, there were no significant differences between recommended and reduced herbicide doses under 50 and 600 viable seed.m-2. Therefore, the treatment of 500 seeds per square meter and 75% of the recommended dose of herbicide were recommended. |
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| Keywords: Mallow, Number of grains per spike, Weed seeds |
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Full-Text [PDF 610 kb]
(35 Downloads)
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Type of Study: Research |
Subject:
Ecophysiology
Received: 2024/03/16 | Accepted: 2023/09/21 | Published: 2023/09/21
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