Synergistic Herbicidal Composition for Rice Weed Control

Solution Overview

Problem

Current herbicides often require high application rates and may not effectively control herbicide-resistant or tolerant weeds, and there is a need for new compositions and methods to manage undesirable vegetation in rice without harming crops.

Innovation Solution

A synergistic herbicidal composition combining penoxsulam or clomazone with benzobicyclon, applied in specific weight ratios, which can be used alone or with additional pesticides and adjuvants, to enhance weed control efficacy while maintaining crop compatibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If high application rates of current herbicides are used, then weed control coverage is improved, but application cost and environmental load increase

Engineering Contradiction:

Improveweed control efficacyVSAvoidapplication rate

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent combines two herbicides with different modes of action (penoxsulam/clomazone and benzobicyclon) into a single composition. This synergistic combination achieves enhanced weed control efficacy at lower application rates compared to using either herbicide alone, directly resolving the contradiction between reliability and quantity of substance.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention creates a composite herbicidal composition comprising specific ratios of penoxsulam or clomazone combined with benzobicyclon. This composite formulation leverages the complementary properties of both herbicides to achieve superior weed control at reduced application rates, addressing the technical contradiction effectively.

Inventive Principle:

Principle #40Composite materials

2Reliability

If high application rates of herbicides are used to control resistant weeds, then weed control efficacy is improved, but crop safety and selectivity deteriorate

Engineering Contradiction:

Improvecontrol of herbicide-resistant weedsVSAvoidcrop safety

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent combines two herbicides with different modes of action (penoxsulam/clomazone and benzobicyclon) into a single composition. This synergistic combination achieves enhanced weed control efficacy at lower application rates compared to using either herbicide alone, directly resolving the contradiction between reliability and quantity of substance.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention optimizes the concentration ratios of the two herbicides in the composition, specifying that penoxsulam or clomazone is present at 0.1-10% by weight and benzobicyclon at 1-40% by weight. This parameter optimization ensures effective control of herbicide-resistant weeds while maintaining crop safety through reduced overall application rates.

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If single herbicide applications are used, then application simplicity is maintained, but weed control spectrum and efficacy deteriorate

Engineering Contradiction:

Improveapplication simplicityVSAvoidweed control spectrum

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent combines two herbicides with different modes of action (penoxsulam/clomazone and benzobicyclon) into a single composition. This synergistic combination achieves enhanced weed control efficacy at lower application rates compared to using either herbicide alone, directly resolving the contradiction between reliability and quantity of substance.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The composite herbicidal composition provides broad-spectrum weed control by combining herbicides with different modes of action, making it effective against multiple weed types including grasses, broadleaf weeds, and sedges. This multi-functional composition maintains application simplicity while significantly expanding the weed control spectrum compared to single herbicide applications.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10701934B2Synergistic weed control from applications of penoxsulam and benzobicyclon or clomazone and benzobicyclon

Publication Date: 2020.07.07 CORTEVA AGRISCIENCE LLC

AI summary

Disclosed herein are herbicidal compositions comprising a synergistic herbicidally effective amount of (a) penoxsulam or an agriculturally acceptable salt thereof, or clomazone or an agriculturally acceptable salt thereof, and (b) benzobicyclon or an agriculturally acceptable salt thereof. Also disclosed herein are methods of controlling undesirable vegetation in rice, which comprise applying to vegetation or an area adjacent the vegetation or applying to soil or water to prevent the emergence or growth of vegetation (a) penoxsulam or an agriculturally acceptable salt thereof, or clomazone or an agriculturally acceptable salt thereof, and (b) benzobicyclon or an agriculturally acceptable salt thereof, wherein (a) and (b) are each added in an amount sufficient to produce a synergistic herbicidal effect.