The impact of herbicides on weed control and physiological traits in corn (Zea mays L.)

Articles in Press

Document Type : Research Paper

Authors

1 Plant Protection Research Department, Ardabil Agricultural and Natural Resources Research and Education Center, AREEO, Moghan, Iran

2 Iranian Research Institute of Plant Protection (IRIPP), Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran

3 Crop and Horticultural Science Research Department, Ardabil Agricultural and Natural Resources Research and Education Center, AREEO, Moghan, Iran

10.22034/jppb.2024.60403.1329

Abstract

Objective: This research aimed to evaluate the effect of herbicides on weed control and physiological traits in corn (Zea mays L.).
Methods: An experiment was performed using a randomized complete block design with four replications at the Agricultural and Natural Resources Research Center of Moghan, Iran, during the 2021 growing season. The herbicides included Amaize-ing (Terbuthylazine, 50% SC) at the rates of 1, 1.2, 1.5, 1.8, and 2 L/ha, Isoxaflutel + Tincarbazone (Adango 46.5% SC), Mesotrione + S-metolachlor + Lumax (Lumax 53.75% SE), U46 Combi Fluid (2,4-D + MCPA 67.5% SL), Bromicide MA (Bromoxynil + MCPA 40% EC), and Bromicide MA (Bromoxynil + MCPA 40% EC) + Cruze (Nicosulfuron 4% SC).
Results: The analysis of variance revealed a significant difference among treatments in terms of weed density, weed dry weight, corn grain yield, chlorophyll index (SPAD), leaf weight, proline, and catalase activity. The use of 1.8 and 2 L/ha concentrations of Amaize-ing, Adengo, Lumax, U46 Combi Fluid, Bromicide MA, and Bromicide MA + Cruze herbicides had a favorable effect on redroot pigweed and common lambsquarters. It resulted in a 20 to 30% increase in corn yield. The highest chlorophyll content and leaf weight of corn were associated with treatments of Adengo, Lumax, U46 Combi Fluid, Bromicide MA, and Bromicide MA + Cruze. However, the Amaize-ing herbicide had a smaller effect on the leaf weight of corn. Also, increasing the concentration of Amaize-ing increased the proline content and activity of catalase in corn.
Conclusion: In conclusion, it seems that the use of 1.8 L/ha of A-mazing and Adengo herbicides can have an effective role in controlling weeds, leading to an increase in leaf weight, photosynthetic capacity, and ultimately corn grain yield.

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Main Subjects

References

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Journal of Plant Physiology and Breeding

Articles in Press, Accepted Manuscript
Available Online from 31 December 2024

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