The effect of weed control and crop residue management on nutrient uptake by weeds and wheat in climate conditions of Khuzestan

Document Type : Research Paper

Authors

1 Plant Production Engineering and Genetics Department. Faculty of Agriculture. Shahid Chamran University of Ahvaz. Iran.

2 Plant Production Engineering and Genetics Department. Faculty of Agriculture. Shahid Chamran University of Ahvaz

Abstract

The field experiment was to investigate the effects of crop residue management and chemical control of weeds on the depletion of nutrients by weeds and uptake of nutrients by wheat as influence of incorporation, burning and removal of residues and chemical control of weeds. This study was performed as split plots design with three replications. Treatments include management of crop residues viz: incorporated, burning and removing sesame residues; Weed control treatment viz 2,4-D+MCPA @ 1.5 lit ha-1(POE), Atlantis @ 1.5 lit ha-1(POE) and metribuzin @ 200 g ha-1(POE). The wheat cultivar was Mehregan. At the 30 DAS, the dry weight of weeds in terms of burning and removal of residue was 12.4 and 12.1 g m-2, respectively, which is much higher than the average dry weight of weeds in terms of incorporated residue. The highest amount of nitrogen depleted by weeds was related to unweeded and Atlantis under burning. The highest amount of nitrogen uptake in the grain with an average of 87.46 kg ha-1 was related to metribuzin in terms of incorporated residues, which had a statistically significant over other levels of treatments. In general, the results showed that in terms of dry weight of weeds and the amount of nutrients depleted by different components of wheat and weeds, there is a statistically significant difference between the types of residues, that return residues in dry matter weight loss and increase the competitiveness of the wheat plant with weeds is due to the provision of better growth conditions for wheat.

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References

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JOURNAL OF AGRICULTURAL SCIENCE AND SUSTAINABLE PRODUCTION
Volume 33, Issue 3
October 2023
Pages 157-171

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