Evaluation the effects of variety mixture and Crop density on weed population in winter chickpea

Articles in Press

Document Type : Research Paper

Authors

1 Department of agroecology, Fuaculty of Ariculture , Lorestan university, Iran

2 Assistant Professor, Phytomedicine Research Department, Agricultural Research and Education Center and Natural Resources of Lorestan Province, Agricultural Research, Education and Extension Organization, Khorramabad, Iran

10.22034/saps.2025.67083.3363

Abstract

Objectives: The aim of this study was to evaluate the competitive ability of chickpea and optimize planting density to control weed populations in winter crops.
Materials and Methods: An experiment was conducted to evaluate the effects of mixing of cultivars and crop density on weed populations in chickpea winter planting as factorial- split in a randomized complete block design during 2015-16 and 2016-17 growing seasons in rainfed conditions in Khorramabad, Iran. The experimental factors consisted of mixing the cultivars in three levels (Adel cultivar monoculture with stand-up growth type, Lorestan cultivar with prostrate growth type, and mixing culture of Adel and Lorestan cultivars), crop density at 3 levels (25, 50 and 75 plants.m-2) and weed management in three levels (weedy check, application of herbicide pyridite, and weeding).
Results: In the first year, the lowest weed density was found in a mixed crop of Lorestan local variety and Adel cultivar at 50 plants.m-2. Increasing planting density from 25 to 75 plants.m-2 reduced weed density by up to 56.4% and weed biomass by up to 60%.
The highest seed yield (1586 kg. ha) was achieved with the Adel cultivar at 75 plants.m-2under weeding conditions. In the second year, Lorestan cultivar and mixed crops had lower weed densities than Adel, and proper density combined with weeding prevented a 94.6% decrease in chickpea seed yield.
Conclusion: Mixed cropping of cultivars with stand-up and prostrate types growth strategies can be used along with other factors affecting the crop competitive ability to reduce the weed interference.

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Journal of Agricultural Science and Sustainable Production

Articles in Press, Accepted Manuscript
Available Online from 20 April 2027

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