Uracil Compound Herbicide Selectivity Optimization
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Solution Overview
Problem
Current herbicides lack effective weed control while maintaining safety for useful plants, leading to inefficient and potentially harmful applications.
Innovation Solution
A compound represented by formula (A) is developed, formulated into a herbicidal composition with inert carriers and applied to weeds or their habitats, offering excellent weed control efficacy with low phytotoxicity to useful plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing herbicides are applied to control weeds, then weed control efficacy is achieved, but safety against useful plants deteriorates (high phytotoxicity)
Solution Approach 1:
The patent modifies the chemical structure of uracil compounds by changing parameters such as substituting hydrogen atoms with specific groups (e.g., fluorine, chlorine, methyl, ethyl groups at positions 5, 6, and 7 of the uracil ring), and adjusting the R1-R6 substituents to optimize the balance between herbicidal activity and selectivity. This structural parameter optimization enables high weed control efficacy while reducing phytotoxicity to useful plants.
Solution Approach 2:
The herbicidal composition is segmented into multiple components: the core uracil compound (Formula A) as the active ingredient, inert carriers for delivery, and optionally adjuvants to enhance performance. This segmentation allows the active compound to be delivered selectively to weeds while inert components ensure safety and proper application characteristics.
2Productivity
If herbicidal compositions are formulated with higher concentrations of active ingredients, then weed control efficacy improves, but safety against useful plants deteriorates
Solution Approach 1:
The patent optimizes the concentration parameters of the active ingredient within specific ranges (e.g., 0.1-1000 g AI/ha application rates, and composition formulations containing 0.1-95 wt% active ingredient) to achieve maximum weed control efficacy while maintaining safety margins for useful plants through precise parameter control.
Data Source
AI summary
A compound having excellent weed control efficacy and high safety against useful plants is represented by formula (A):