Herbicidal Composition Synergy Cinmethylin Dimethenamid
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Solution Overview
Problem
Current herbicides often fail to provide effective control of undesirable vegetation, especially resistant weed biotypes, and require higher application rates, which can damage crops and lead to reduced efficacy over time due to resistance development.
Innovation Solution
A herbicidal composition combining (±)-2-exo-(2-Methylbenzyloxy)-1-methyl-4-isopropyl-7-oxabicyclo[2.2.1]heptane with dimethenamid or dimethenamid-P, which exhibits a synergistic herbicidal effect, allowing for reduced application rates while maintaining or improving weed control and minimizing crop damage, and effectively controlling resistant weed biotypes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single herbicide is used to control weeds, then the herbicide formulation is simple, but the herbicidal activity and reliability of effect are insufficient
Solution Approach 1:
The patent combines two herbicidal active compounds (cinmethylin and dimethenamid or dimethenamid-P) in a single herbicidal composition. This merging of compounds provides synergistic or additive herbicidal effects, improving the reliability of weed control while maintaining a relatively simple formulation structure. The combination allows for better control of both susceptible and resistant weed biotypes compared to single-compound formulations.
2Reliability
If higher application rates of herbicide are used to control resistant weed biotypes, then weed control effectiveness is improved, but crop damage increases
Solution Approach 1:
The patent changes the parameter of herbicide composition by combining cinmethylin with dimethenamid or dimethenamid-P, which alters the herbicidal activity profile. This parameter change enables effective control of resistant weed biotypes at reduced application rates compared to using cinmethylin alone, thereby reducing crop damage while maintaining weed control effectiveness.
Solution Approach 2:
The invention creates a composite herbicidal material comprising multiple active compounds (cinmethylin and dimethenamid/P) that work synergistically. This composite formulation provides enhanced herbicidal activity against resistant weeds at lower individual compound concentrations, reducing the overall application rate and minimizing crop damage while maintaining effective weed control.
3Productivity
If repeated herbicide application is used to control weeds, then weed control is achieved, but herbicide-resistant weed biotypes develop
Solution Approach 1:
The patent segments the herbicidal action by combining two different modes of action (cinmethylin and dimethenamid/P), which targets different physiological pathways in weeds. This segmentation of the herbicidal mechanism reduces the selective pressure on weeds for a single resistance mechanism, thereby delaying the development of herbicide-resistant biotypes while maintaining high weed control productivity.
Solution Approach 2:
By changing the herbicidal composition parameter to a multi-compound formulation, the patent creates a more robust herbicide system that is less susceptible to resistance development. The combination of cinmethylin and dimethenamid/P provides diverse mechanisms of action that make it more difficult for weeds to develop resistance, thereby maintaining herbicide efficacy over time while preserving high weed control productivity.
Data Source
AI summary
The present invention relates to a herbicidal composition comprising dimethenamid or dimethenamid-P. The invention also relates to methods and uses for controlling undesirable vegetation, in particular in crops.