Herbicidal Oil-in-Water Emulsion for Reduced Efficacy and Phytotoxicity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current herbicidal compositions for controlling broadleaf weeds in turfgrass often require high doses of herbicides, posing risks to human health and the environment, and lack effective selective control methods that are non-phytotoxic to turfgrass.
Innovation Solution
Development of herbicidal oil-in-water emulsions with reduced active ingredient concentrations and specific oil-emulsifier ratios, allowing for effective broadleaf weed control with lower herbicide usage and minimal turfgrass toxicity, also capable of controlling insects like sod webworms and fall armyworms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high doses of herbicides are used to control broadleaf weeds in turfgrass, then weed control efficacy is improved, but human health and environmental risks increase
Solution Approach 1:
The patent changes the physical-chemical parameters of the herbicide delivery system by formulating an oil-in-water emulsion with specific oil-to-emulsifier ratios (70:30 to 90:10). This parameter change enables the herbicide to be delivered at reduced rates while maintaining or improving control efficacy, thereby reducing human health and environmental risks associated with high herbicide doses.
Solution Approach 2:
The patent uses a composite emulsion system combining hydrocarbon oil, emulsifier, and herbicide in specific proportions. This composite material approach creates a delivery system that enhances herbicide effectiveness at lower application rates, reducing the harmful factors while maintaining reliable weed control.
2Reliability
If oil-based herbicide adjuvants are added to improve weed control, then coverage and penetration are improved, but phytotoxicity to turfgrass increases
Solution Approach 1:
The patent optimizes the emulsion composition parameters, specifically the oil-to-emulsifier ratio (70:30 to 90:10) and the emulsion concentration (5-30% oil-in-water), to achieve a balance where adequate coverage and penetration are obtained without excessive phytotoxicity. This parameter optimization allows effective broadleaf weed control while minimizing harm to turfgrass.
3Object-affected harmful factors
If reduced herbicide rates are used to decrease environmental impact, then human health and environmental risks are reduced, but weed control efficacy decreases
Solution Approach 1:
The patent introduces an oil-in-water emulsion system as an intermediary delivery mechanism. The emulsion formulation with specific oil-to-emulsifier ratios acts as a mediator that enhances the performance of reduced herbicide rates, enabling effective broadleaf weed control at lower application rates and thereby reducing environmental impact while maintaining efficacy.
4Reliability
If selective herbicides like 2,4-D are used for broadleaf weed control, then broadleaf weed control is improved, but carcinogenic and teratogenic risks increase
Solution Approach 1:
The patent applies parameter changes to the delivery system of selective herbicides like 2,4-D by formulating them in an oil-in-water emulsion with optimized oil-to-emulsifier ratios. This enables the use of lower application rates of these herbicides while maintaining broadleaf weed control efficacy, thereby reducing the carcinogenic and teratogenic risks to humans.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The novel herbicidal compositions demonstrate increased efficacy in controlling broadleaf weeds at reduced herbicide rates with low phytotoxicity to turfgrass, achieving equivalent or better control with lower herbicide amounts and reduced environmental impact.
Implementation Method 1
herbicidal oil-in-water emulsions
Implementation Method 2
emulsifier
Data Source
AI summary
An herbicide composition available as a concentrate for dilution with water or a ready-to-use oil-in-water emulsion which has a significantly reduced amount of active ingredient of a broadleaf herbicide. The composition combines the reduced amount of herbicide in a mixture of oil and emulsifier.