Herbicidal Composition Ratio Optimization for Weed Control
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Solution Overview
Problem
Existing herbicidal compositions that combine aryloxyphenoxypropionate and cyclohexanedione compounds at equivalent ratios are not optimal for weed control, leading to subpar effectiveness and resistance issues in certain weed species.
Innovation Solution
A herbicidal composition featuring a specific ratio of aryloxyphenoxypropionate to cyclohexanedione compounds, where the cyclohexanedione compound is present in greater quantities (1.5 to 4 times that of the aryloxyphenoxypropionate), optimizing the ratio for enhanced weed control efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If herbicidal compositions use equivalent ratios of aryloxyphenoxypropionate and cyclohexanedione compounds, then the composition is simple to formulate, but the weed control effectiveness is suboptimal and resistance issues develop
Solution Approach 1:
The patent applies parameter changes by modifying the ratio parameter of the two herbicidal compounds from the conventional 1:1 equivalent ratio to an optimized range of 1:1.5 to 1:4 (aryl: cyclohexanedione). This parameter adjustment resolves the contradiction by achieving superior weed control effectiveness and overcoming resistance while maintaining formulation simplicity through a straightforward ratio specification.
2Reliability
If herbicidal compositions use equivalent ratios of aryloxyphenoxypropionate and cyclohexanedione compounds, then the formulation is straightforward, but resistance in certain weed species develops
Solution Approach 1:
The patent addresses resistance management by changing the concentration ratio parameter of the herbicidal compounds to 1:1.5 to 1:4 (aryl: cyclohexanedione). This parameter modification enables the composition to overcome resistant weed species while maintaining formulation simplicity, as the resistance management benefit is achieved through the optimized ratio rather than complex formulation strategies.
3Reliability
If the ratio of cyclohowanedione to aryloxyphenoxypropionate is increased to 1:1.5 to 1:4, then weed control effectiveness improves, but the composition requires precise ratio control
Solution Approach 1:
The patent implements parameter changes by defining a ratio range of 1:1.5 to 1:4 (aryl: cyclohowanedione) rather than a single fixed ratio. This approach achieves broad spectrum weed control effectiveness while accommodating reasonable manufacturing variations, as the range provides a buffer against precision requirements while still delivering optimal performance.
Data Source
AI summary
The present invention relates to a herbicidal composition comprising a first compound belonging to the aryloxyphenoxypropionate family and a second compound belonging to the cyclohexanedione family, said composition being characterized in that the first and second compounds are present in said composition in a ratio ranging from 1:1.5 to 1:4. The present invention further relates to a method for controlling at least one weed, capable of growing in a field of crop cultivation, with said composition of the invention. Finally, the use of the herbicidal composition for the treatment of dicotyledonous scab is also claimed.