Herbicidal Composition Synergy for Resistant Weed Control

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Solution Overview

Problem

Current herbicides often fail to provide effective control of undesirable vegetation while being compatible with crop plants, and they struggle to manage herbicide-resistant weed biotypes, leading to reduced efficacy over time.

Innovation Solution

A herbicidal composition combining (±)-2-exo-(2-Methylbenzyloxy)-1-methyl-4-isopropyl-7-oxabicyclo[2.2.1]heptane and pendimethalin, which offers a synergistic herbicidal effect, providing enhanced weed control with reduced application rates and improved compatibility with crops, effectively managing both susceptible and resistant weed biotypes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single herbicidally active compound is used, then the application rate can be kept simple, but the spectrum of activity is limited and herbicide-resistant weeds cannot be effectively controlled

Engineering Contradiction:

Improvespectrum of activityVSAvoidcomposition complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines two different herbicidally active compounds (cinmethylin and pendimethalin) into a single composition to achieve synergistic effects. This merging allows the composition to control both susceptible and herbicide-resistant weed biotypes simultaneously, expanding the spectrum of activity while managing composition complexity through optimized ratios of the two compounds.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If higher application rates are used to control resistant weeds, then weed control efficacy is improved, but crop damage increases

Engineering Contradiction:

Improveweed control efficacyVSAvoidcrop damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the parameter of application rate by utilizing a synergistic combination of two herbicides. The synergistic effect allows achieving the same or better weed control efficacy at lower total application rates compared to using single compounds at high rates, thereby reducing crop damage while maintaining reliability of weed control.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite herbicidal composition containing cinmethylin and pendimethalin in specific ratios. This composite material provides enhanced efficacy against resistant weeds through synergistic action, allowing effective control at lower application rates that minimize harm to crop plants.

Inventive Principle:

Principle #40Composite materials

3Ease of operation

If repeated use of the same herbicide is practiced, then application simplicity is maintained, but herbicide resistance in weeds develops

Engineering Contradiction:

Improveapplication simplicityVSAvoidherbicide efficacy

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent merges two different herbicidally active compounds with different modes of action into a single composition. This combination prevents herbicide resistance development because the synergistic interaction between cinmethylin and pendimethalin targets multiple physiological pathways in weeds, making it difficult for resistant biotypes to survive while maintaining application simplicity.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP3319432B1Herbicidal composition comprising cinmethylin and pendimethalin

Publication Date: 2020.01.01 BASF AGRO BV

AI summary

The present invention relates to a herbicidal composition comprising pendimethalin. The invention also relates to methods and uses for controlling undesirable vegetation, in particular in crops.