Competitive cultivars

By Penny, 9 May, 2025
Description
Wheat cultivars with strong competitiveness against weeds are selected, reducing or eliminating the need for post-emergence herbicide applications during wheat production.
Country
IWM Tactic
Explanation
This practice supports the reduction of herbicide use by leveraging the natural weed-suppressing ability of certain wheat varieties, contributing to more sustainable crop management.
Advantages
Winter wheat can effectively suppress many weed species, provided the crop is well-established and vigorous.
This method reduces herbicide use and lowers labor requirements for weed control during crop production.
No specialized equipment is needed to implement this approach, making it widely accessible.
Herbicide use is reduced, and since no additional soil disturbance or fuel consumption is required, the method is environmentally friendly and contributes to lower greenhouse gas emissions.
Drawbacks
Poor crop establishment or overwintering can significantly reduce weed suppression. Additionally, some problematic weeds—such as perennials—may not be effectively controlled.
Highly competitive cultivars may lack other agronomic or quality traits valued in the grain market, potentially affecting profitability.
There is limited or no publicly available information on the weed suppression potential of many winter wheat cultivars, making selection more difficult for farmers.
Technical Aspects

Technical readiness
To fully implement this approach, cultivars must be identified that are both competitive with weeds and well-suited to local climate conditions and market demands. While plant breeders are increasingly considering weed competitiveness as a selection trait, more detailed and accessible information is still needed for farmers.

Ease and efficiency of implementation
This method can be easily adopted by any farmer. However, its effectiveness depends significantly on crop establishment, prevailing weather conditions, and the dominant weed species present in the field.

Need for training and education
No specific training is required, but farmers need reliable information on the weed-suppressing potential of available winter wheat cultivars to make informed choices.

Need for investments
No additional investment is necessary for adopting this method, making it a low-cost strategy for improving weed management.

Policy Recommendations
Adoption of this practice can be encouraged by supporting breeding programs that focus on developing competitive wheat cultivars and by disseminating information about their performance under local conditions.

Demonstration trials and targeted outreach to farmers—including cultivar comparisons for weed suppression—would further help to build awareness and promote wider implementation of this low-input, environmentally friendly weed management strategy.
CBA Availability
false
Social Analysis Color
green
Environmental Analysis Color
green