Herbicidal Composition Synergy Cinmethylin Pyroxasulfone
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current herbicides often fail to provide effective control of undesirable vegetation, particularly herbicide-resistant weeds, with limited compatibility with crop plants and requiring higher application rates, which can lead to the spread of resistant weed biotypes.
Innovation Solution
A herbicidal composition combining (±)-2-exo-(2-Methylbenzyloxy)-1-methyl-4-isopropyl-7-oxabicyclo[2.2.1]heptane and pyroxasulfone, which exhibits a synergistic herbicidal effect, allowing for reduced application rates while maintaining or improving weed control and minimizing damage to crops, and effectively controlling herbicide-resistant weed biotypes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If higher application rates of herbicides are used to control herbicide-resistant weeds, then weed control effectiveness is improved, but crop damage increases and resistant weed biotypes spread faster
Solution Approach 1:
The patent combines two different herbicides with distinct modes of action - cinmethylin (auxin-type herbicide) and pyroxasulfone (PPO inhibitor). This combination allows for effective control of herbicide-resistant weeds while maintaining crop safety, as each herbicide targets different physiological pathways and the synergistic effect achieves better weed control at lower application rates
2Reliability
If higher application rates of herbicides are used to control herbicide-resistant weeds, then weed control effectiveness is improved, but the spread of resistant weed biotypes is accelerated
Solution Approach 1:
The patent changes the chemical parameters by combining two herbicides with different modes of action and chemical structures. This parameter change allows for effective control of resistant weeds at reduced application rates, thereby slowing the spread of resistant biotypes through reduced selection pressure
3Device complexity
If a single herbicide is used to maintain simplicity, then application complexity is reduced, but the spectrum of activity is limited and resistance develops faster
Solution Approach 1:
The herbicide composition achieves multi-functionality by combining cinmethylin and pyroxasulfone, enabling the formulation to control a broader spectrum of weeds including both grasses and broadleaf weeds, as well as effectively managing herbicide-resistant biotypes through dual mode of action
Data Source
AI summary
The present invention relates to a herbicidal composition comprising pyroxasulfone. The invention also relates to methods and uses for controlling undesirable vegetation, in particular in crops.