Abstract
Herbicide-resistant weeds are a growing problem, reducing crop yield and profitability for wheat, sorghum, and soybean producers in the Southern Great Plains. Herbicide-resistant weed pressure is particularly challenging for rainfed, no-till winter wheat systems, which are common in this region. The objective of this study is to determine the economic effectiveness of various herbicide resistance management strategies within rainfed winter wheat cropping systems in the Southern Great Plains. The study investigates how these strategies can limit the spread of herbicide-resistant weeds and support profitable crop production. Three cropping systems were evaluated: continuous wheat-soybean-fallow, wheat-sorghum-fallow, and wheat-fallow rotations. Herbicide management strategies analyzed include combinations of pre-emergent, post-emergent, and glyphosate burndown applications, as well as variations in application frequency. A dynamic, bioeconomic weed population model was employed to evaluate the economic implications of proactive weed management strategies for each cropping system. Additionally, yield loss due to weed pressure was estimated through a crop growth simulation model linked to a weed competition model. Results indicated optimal herbicide management strategies delayed the spread of herbicide-resistant genes in weed populations. The proliferation of herbicide-resistant genes took longer in wheat-double crop systems than in a wheat-fallow system. Moreover, the inclusion of summer crops increased revenue through additional crop revenue. The findings indicate that adopting wheat-double crop rotations with targeted herbicide strategies can slow the development of herbicide resistance in the Southern Great Plains. This research highlights the importance of diversified crop rotations and careful herbicide management for sustainable and effective long-term weed control. • A bioeconomic model analyzed economics of herbicide resistance in wheat-based systems. • Wheat-soybean-fallow systems yielded the highest net returns. • Optimal glyphosate use slowed resistance compared to suboptimal use strategies. • Double-crop systems delayed glyphosate-resistant weed growth. • Findings highlight the profitability of double-cropping and prudent glyphosate use.
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Claims 5
Claim · model-written summary
Wheat-soybean-fallow systems yielded the highest net returns.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- Wheat-soybean-fallowe2
- Outcome
- net returnse2
- Direction
- higheste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“reducing crop yield and profitability for wheat, sorghum, and soybean producers”
e2“Wheat-soybean-fallow systems yielded the highest net returns”
Claim · model-written summary
Wheat-double crop systems delayed the proliferation of herbicide-resistant genes compared with wheat-fallow.
- Taxon
- wheatTriticum aestivume1
- Treatment
- wheat-double crop systemse3
- Outcome
- proliferation of herbicide-resistant genese3
- Direction
- took longere3
- Comparator
- wheat-fallow systeme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“reducing crop yield and profitability for wheat, sorghum, and soybean producers”
e3“The proliferation of herbicide-resistant genes took longer in wheat-double crop systems than in a wheat-fallow system”
Claim · model-written summary
Optimal herbicide management strategies delayed the spread of herbicide-resistant genes in weed populations.
- Taxon
- wheatTriticum aestivume1
- Treatment
- optimal herbicide management strategiese4
- Interactor
- weede4weed
- Outcome
- spread of herbicide-resistant genese4
- Direction
- delayede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“reducing crop yield and profitability for wheat, sorghum, and soybean producers”
e4“Results indicated optimal herbicide management strategies delayed the spread of herbicide-resistant genes in weed populations”
Claim · model-written summary
Including summer crops increased revenue.
- Taxon
- wheatTriticum aestivume1
- Treatment
- inclusion of summer cropse5
- Outcome
- revenuee5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“reducing crop yield and profitability for wheat, sorghum, and soybean producers”
e5“Moreover, the inclusion of summer crops increased revenue through additional crop revenue”
Claim · model-written summary
Wheat-double crop rotations with targeted herbicide strategies are recommended to slow the development of herbicide resistance.
- Taxon
- wheatTriticum aestivume1
- Outcome
- slow the development of herbicide resistancee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“reducing crop yield and profitability for wheat, sorghum, and soybean producers”
e6“adopting wheat-double crop rotations with targeted herbicide strategies can slow the development of herbicide resistance in the Southern Great Plains”
The same questions in other papers
herbicide · molecular: expression · Triticum aestivum (wheat)Results agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.