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Crop competition effects on weeds and crops

Widderick, M., Wu, H., Shabbir, A., Bell, K. L. and Walsh, M. (2024) Crop competition effects on weeds and crops. GRDC Update .


Article Link: https://grdc.com.au/__data/assets/pdf_file/0040/59...


Take home message
• There is convincing evidence that increased crop competition in sorghum, mungbean, faba bean and chickpea resulting from narrower row spacing and/or increased crop density reduces growth and seed production of feathertop Rhodes grass and sowthistle
• Importantly, in most instances, narrower row spacing and increased plant density did not have a negative impact on grain yield. In situations where resources (e.g. water) were not limiting, more competitive crops resulted in higher yield
• In general, when there is low yield potential (usually due to limited resources) growing a crop at a narrow row spacing or increased crop density is more likely to result in yield loss. In contrast, when there is a high yield potential, crops grown at wide row spacing are likely to result in yield loss when compared to narrow row spacing.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Business groups:Crop and Food Science
Keywords:crop competition, weeds, row spacing, crop density, yield stability
Subjects:Science > Invasive Species > Plants > Effect of herbicides
Science > Invasive Species > Plants > Integrated weed control
Agriculture > Agriculture (General) > Soils. Soil science
Agriculture > Agriculture (General) > Soils. Soil science > Soil chemistry
Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Plant culture > Food crops
Plant culture > Field crops > Grain. Cereals
Live Archive:09 Apr 2024 00:44
Last Modified:09 Apr 2024 01:16

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