Fungicidal Composition Synergy for Resistant Strains

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Solution Overview

Problem

Current fungicidal compositions for controlling phytopathogenic diseases in plants often fail to provide adequate crop tolerance and activity against resistant strains, necessitating the development of more effective solutions.

Innovation Solution

A synergistic combination of specific o-cyclopropyl-carboxanilide derivatives and known fungicides, such as Azoxystrobin, Fludioxonil, and Difenoconazole, is applied to plants, propagation materials, or storage goods to enhance fungicidal activity, reduce application rates, and broaden the spectrum of controlled phytopathogens.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If higher application rates of single fungicides are used, then fungicidal activity is improved, but crop tolerance deteriorates and resistance development accelerates

Engineering Contradiction:

Improvefungicidal activityVSAvoidcrop tolerance

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent combines two fungicides with different modes of action (a carboxanilide derivative and another fungicide from the specified groups) into a single composition. This synergistic combination achieves enhanced fungicidal activity at lower application rates, thereby maintaining crop tolerance while improving reliability of disease control.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If higher application rates of single fungicides are used, then fungicidal activity is improved, but development of resistant strains accelerates

Engineering Contradiction:

Improveactivity against phytopathogenic fungiVSAvoidspectrum of controlled phytopathogens

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent combines two fungicides with different modes of action into a single composition. This synergistic combination achieves enhanced fungicidal activity at lower application rates, thereby maintaining crop tolerance while improving reliability of disease control.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent changes the concentration parameter by using lower application rates of the fungicidal composition compared to individual fungicides. This parameter change, combined with the use of multiple active ingredients with different modes of action, effectively controls phytopathogenic fungi while delaying the development of resistant strains.

Inventive Principle:

Principle #35Parameter changes

3Object-affected harmful factors

If lower application rates are used, then crop safety is improved, but fungicidal activity deteriorates

Engineering Contradiction:

Improvecrop toleranceVSAvoidfungicidal activity

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS8536089B2Fungicidal compositions

Publication Date: 2013.09.17 SYNGENTA CROP PROTECTION INC

AI summary

The invention relates to fungicidal compositions comprising as active ingredient a combination of components A) and B) as defined in the patent claims, to a method of controlling phytopathogenic diseases on crop plants using such a compositions and to a method of protecting natural substances of vegetable and/or animal origin and/or their processed forms using such a composition.