Substituted Isoxazoline Herbicides for Selective Turfgrass Weed Control

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Solution Overview

Problem

Existing herbicides for weed control in lawns and turfs lack selectivity, often damaging turfgrass and failing to control certain weeds, and do not enhance turfgrass quality during dry seasons or dormancy.

Innovation Solution

The use of substituted isoxazoline carboxamides as herbicides that selectively control weeds without harming turfgrass, enhancing green color and density.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional herbicides are used for weed control in lawn or turf, then weed control effectiveness is improved, but selectivity is worsened causing substantial injury to turfgrass

Engineering Contradiction:

Improveweed control effectivenessVSAvoidinjury to turfgrass

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies parameter changes by modifying the chemical structure of isoxazoline carboxamide compounds through specific substitutions at positions R1-R8 and G groups. These structural parameter changes result in compounds that selectively control weeds while sparing turfgrass, resolving the contradiction between weed control effectiveness and turfgrass safety

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention employs local quality by designing compounds with specific functional groups (G = OR4 or NR7R8) and substituent patterns that create localized chemical interactions. This allows the herbicide to target specific weed physiological pathways while being selective and non-toxic to turfgrass species

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If existing herbicides are used for weed control, then broad spectrum weed control is achieved, but selectivity against specific weed types is worsened leaving gaps in control

Engineering Contradiction:

Improvebroad spectrum weed controlVSAvoidselectivity against specific weeds

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The substituted isoxazoline carboxamides exhibit universality by demonstrating broad-spectrum activity against multiple weed types including annual and perennial weeds and moss. The compounds perform multiple functions: they control diverse weed species while simultaneously enhancing turfgrass quality and maintaining selectivity, addressing the contradiction between broad coverage and specific effectiveness

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If conventional weed control methods are used, then weed management is achieved, but turfgrass quality enhancement is worsened during dry season and dormancy

Engineering Contradiction:

Improveweed managementVSAvoidturfgrass quality

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The invention merges two previously separate functions into a single herbicide treatment: weed control and turfgrass quality enhancement. The substituted isoxazoline carboxamides simultaneously manage weeds and improve turfgrass characteristics such as green color and density, even during dry season and dormancy periods when quality maintenance is most challenging

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250261643A1Method for weed control in lawn or turf

Publication Date: 2025.08.21 DISCOVERY PURCHASER CORP

AI summary

Method for improving quality in lawnThe invention relates to the use of one or more compounds of the formula (I) or salts thereof,whereinthe groups R1 to R8 are defined as set forth in claim 1, optionally in the presence of additional agrochemical active ingredients, for improving quality of turf or lawn.