Synergistic Herbicidal Composition for Wheat Crop Safety
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Solution Overview
Problem
Conventional herbicides used in wheat fields often require high dosages and strict application techniques due to limited weed control effect at low doses, leading to safety risks for crops and rapid development of drug resistance in weeds, with cross-target resistance issues between different herbicide classes.
Innovation Solution
A synergistic herbicidal composition comprising a 4-benzoylpyrazole compound combined with other active ingredients such as MCPA, 2,4-D, bromoxynil, and diflufenican, within specific weight ratios, which provides a broader spectrum of weed control, reduced application rate, and enhanced safety for crops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional herbicides are used at high dosage, then weed control effect is improved, but crop safety deteriorates and drug resistance develops rapidly
Solution Approach 1:
The patent combines a 4-benzoylpyrazole compound (active ingredient A) with conventional herbicides (active ingredient B) to create a synergistic composition. This merging of different herbicide classes achieves enhanced weed control efficacy while allowing reduced application rates, thereby maintaining crop safety and slowing resistance development.
Solution Approach 2:
The invention creates a composite herbicidal composition consisting of two distinct active ingredients with different modes of action. The 4-benzoylpyrazole compound (formula I) is combined with conventional herbicides in specific weight ratios (0.1:99.9 to 99.9:0.1), forming a composite material that leverages the strengths of each component while mitigating their individual limitations.
2Object-affected harmful factors
If conventional herbicides are used at low dosage, then crop safety is improved, but weed control effect deteriorates
Solution Approach 1:
The synergistic composition merges the 4-benzoylpyrazole compound with conventional herbicides to achieve enhanced efficacy at reduced dosages. The combination allows the use of lower application rates while maintaining or improving weed control effectiveness, thereby ensuring crop safety without sacrificing performance.
Solution Approach 2:
The invention changes the effective concentration parameter by utilizing a synergistic combination that produces greater than additive effects. The specific weight ratios of the two active ingredients create a composition where the combined herbicidal activity exceeds the sum of individual activities, enabling effective weed control at lower total dosages.
3Ease of operation
If single chemical herbicide is used continuously, then application simplicity is improved, but drug resistance and tolerance in weeds deteriorates
Solution Approach 1:
The patent merges two herbicides with different functional mechanisms into a single composite formulation. This approach maintains application simplicity as farmers apply one product rather than multiple separate treatments, while simultaneously combating drug resistance through the synergistic interaction of ingredients with different modes of action.
Solution Approach 2:
The composite herbicidal composition incorporates two active ingredients with distinct biochemical targets and modes of action. The 4-benzoylpyrazole compound (formula I) works through a different mechanism than conventional herbicides, and their combination in specific ratios creates a material that effectively manages resistance while simplifying application protocols.
4Reliability
If photosynthetic photosystem II herbicides are used alone, then broad-leaved weed control is improved, but crop safety deteriorates due to high dosage requirement
Solution Approach 1:
The invention merges photosynthetic photosystem II herbicides with the 4-benzoylpyrazole compound to create a synergistic composition. This combination maintains the broad-spectrum broad-leaved weed control capability while reducing the required dosage, thereby improving crop safety through the enhanced efficacy of the synergistic formulation.
Data Source
AI summary
The present invention belongs to the technical field of synergistic pesticides, and particularly relates to a synergistic herbicidal composition comprising a 4-benzoylpyrazole compound. The synergistic herbicidal composition comprises an active ingredient A and an active ingredient B in an herbicidally effective amount, wherein, the active ingredient A is the compound of the active ingredient B is one or more compounds selected from: 1) a phenoxycarboxylic acid; 2) a pyridinecarboxylic acid; 3) a benzoic acid; 4) a hydroxybenzonitrile; 5) an urea; 6) a pyridine; 7) a triazolinone; 8) a diphenyl ether; 9) an acetamide; 10) an aryloxyphenoxypropionate; 11) a cyclohexanedione; 12) a sulfonylurea; 13) a triazine; 14) a sulfonamide; 15) a phenylpyrazoline; and 16) others: bentazon. The composition is effective for controlling a broad-leaved weed in wheat fields, has extended weed-controlling spectrum, significant synergistic effect and reduced application rate, and is safe for a crop.