Herbicidal Composition Synergy for Weed Control
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Solution Overview
Problem
Current herbicides often fail to provide effective and sustainable weed control due to resistance development in weeds, inadequate synergistic effects, and potential toxicological and environmental concerns, necessitating the development of new mixtures with improved efficacy and resistance management.
Innovation Solution
A combination of metamitron, a thiocarbamate herbicide, and at least one herbicide from the groups consisting of 3-isoxazolidinones, oxyacetamides, or urea inhibitors of photosynthesis at PS II, either alone or with adjuvants, to create a herbicidal composition that offers enhanced weed control through synergistic efficacy, reduced dosages, and prolonged residual activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repeated and exclusive application of an individual active ingredient is used, then control of single weed is achieved, but resistance development occurs
Solution Approach 1:
The patent combines multiple herbicides from different chemical classes (metamitron, thiocarbamate, and one of 3-isoxazolidinone, oxyacetamide, or urea inhibitor of photosynthesis at PS II) into a single composition. This merging of different active ingredients with distinct modes of action provides effective weed control while preventing resistance development, as weeds cannot adapt to multiple simultaneous mechanisms of action.
2Adaptability or versatility
If combinations of herbicides are used to broaden spectrum of control, then control spectrum is improved, but synergistic effect is rarely attained
Solution Approach 1:
The patent specifies precise dosage ranges for each active ingredient that work together synergistically. The composition includes metamitron at 20-200 g/ha, thiocarbamate at 50-500 g/ha, and the third herbicide at 10-200 g/ha. These parameter changes in concentration ratios optimize the synergistic interaction between the different herbicides, achieving enhanced efficacy beyond simple additive effects.
3Reliability
If higher dosages of herbicides are applied, then weed control efficacy is improved, but toxicological and environmental effects increase
Solution Approach 1:
The patent combines multiple herbicides at optimized lower dosages to achieve synergistic weed control. This merging approach allows each active ingredient to be applied at reduced rates while collectively providing superior control efficacy, thereby minimizing toxicological and environmental impacts compared to applying single herbicides at high doses.
Solution Approach 2:
The patent defines specific dosage parameters for each herbicide component that optimize efficacy while reducing overall chemical load. The composition uses metamitron (20-200 g/ha), thiocarbamate (50-500 g/ha), and the third herbicide (10-200 g/ha) in coordinated amounts that achieve maximum weed control at minimum effective doses, reducing harmful effects.
4Ease of operation
If single herbicide is used, then application simplicity is maintained, but resistance development and inadequate control occur
Solution Approach 1:
The patent merges multiple herbicides into a single pre-formulated composition that maintains application simplicity. Farmers apply one product containing metamitron, thiocarbamate, and a third herbicide in optimized ratios, achieving the same ease of operation as single-herbicide applications while gaining the benefits of synergistic control and resistance management.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The combination exhibits broad-spectrum weed control with knock-down and long residual effects, reducing individual herbicide dosages and mitigating resistance, while maintaining safety for agriculturally important plants.
Implementation Method 1
urea inhibitors of photosynthesis at PS II
Data Source
AI summary
A combination of herbicidal active ingredients for agricultural applications, tank mixes, methods for controlling weeds, and kits-of-parts comprising herbicidal active ingredients and an instruction manual comprising instructions to admix the components before being used.