Glyphosate-Resistant Weed Control via Novel Pyrimidinone Herbicide

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Solution Overview

Problem

Existing methods for controlling glyphosate-resistant weeds are ineffective, as these weeds have developed resistance to multiple herbicides, including glyphosate.

Innovation Solution

The use of ethyl [3-[2-chloro-4-fluoro-5-(1-methyl-6-trifluoromethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-3-yl)phenoxy]-2-pyridyloxy]acetate, applied at a rate of 5 to 200 g per 10,000 square meters, to effectively control glyphosate-resistant weeds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional herbicides including glyphosate are applied to control weeds, then weed control is attempted, but glyphosate-resistant weeds survive and continue to proliferate

Engineering Contradiction:

Improveweed control effectivenessVSAvoidherbicide resistance

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical parameter by introducing a novel herbicide compound with a specific molecular structure containing a pyrimidinone core and fluoro-phenoxy group. This chemical parameter change enables effective binding to the EPSPS enzyme in glyphosate-resistant weeds, achieving control where conventional herbicides fail.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention employs a composite approach by combining the novel herbicide compound with adjuvants and formulating it in specific carriers to enhance its effectiveness against resistant weeds while maintaining safety for crops and environment.

Inventive Principle:

Principle #40Composite materials

2Reliability

If multiple herbicides are applied to overcome resistance, then control effectiveness may improve, but cost and environmental impact increase

Engineering Contradiction:

Improveweed control effectivenessVSAvoidchemical resource consumption

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent segments the herbicide action into a single novel compound with multiple modes of action, rather than relying on combinations of conventional herbicides. This segmented approach at the molecular level provides comprehensive control while reducing overall chemical consumption.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The novel herbicide compound exhibits multi-functionality by effectively controlling multiple types of glyphosate-resistant weeds through a single application, eliminating the need for multiple different herbicides and reducing overall chemical resource consumption.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250113824A1Weed control method

Publication Date: 2025.04.10 SUMITOMO CHEM CO LTD

AI summary

The present invention pertains to a method for controlling glyphosate-resistant weeds that includes a step for applying, to glyphosate-resistant weeds or a habitat for glyphosate-resistant weeds, ethyl [3-[2-chloro-4-fluoro-5-(1-methyl-6-trifluoromethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-3-yl)phenoxy]-2-pyridyloxy]acetate in an amount of 5-200 g per 10000 m2. The present invention thus makes it possible to provide a method for achieving excellent control effects in weed control.