Synergistic Chalcone Nematicide Composition for Soil Safety
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Solution Overview
Problem
Current nematicides are toxic to humans and detrimental to beneficial soil bacteria, contaminate groundwater, and have adverse effects on plant growth, necessitating the development of environmentally safe and non-toxic alternatives for effective nematode control.
Innovation Solution
A synergistic composition of chalcones, specifically a combination of chalcone 17 and chalcone 25 or chalcone 17 and chalcone 30, at concentrations of 10−4-10−6 M, which exhibit potent nematicidal and nematostatic activity while being safe for soil microorganisms and promoting plant growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical nematicides are used to kill nematodes, then nematode control effectiveness is improved, but toxicity to humans and beneficial soil bacteria increases
Solution Approach 1:
The patent changes the chemical parameters by using naturally occurring chalcones with specific molecular structures (Formula I) at optimized concentrations (10-6 to 10-4 M), transforming the nematicide from synthetic toxic chemicals to natural safe compounds while maintaining effectiveness
Solution Approach 2:
The patent uses composite material principle by combining multiple chalcone compounds with different structural variations (different Ring A and Ring B substitutions) to create a synergistic mixture that enhances nematicidal activity while reducing individual compound toxicity and preventing resistance development
2Reliability
If chemical nematicides are used to control nematodes, then nematode mortality is improved, but groundwater contamination increases
Solution Approach 1:
The patent employs naturally occurring chalcones that are biodegradable and environmentally benign, replacing persistent synthetic chemicals that contaminate groundwater. These natural compounds degrade quickly in the environment, preventing long-term contamination while maintaining nematicidal efficacy
Solution Approach 2:
The patent changes the chemical stability parameter by selecting chalcones with natural degradation pathways, transforming the persistence parameter from long-lasting toxic chemicals to short-lived safe compounds that do not contaminate groundwater
3Reliability
If chemical nematicides are used to kill nematodes, then nematode control is improved, but plant growth is adversely affected
Solution Approach 1:
The patent converts the potential harm of nematicide application into benefit by using chalcones that, at optimal concentrations (10-6 to 10-4 M), not only control nematodes effectively but also stimulate plant growth and enhance photosynthesis, transforming a harmful intervention into a beneficial one
Solution Approach 2:
The patent optimizes the concentration parameter to a specific range (10-6 to 10-4 M) where the chalcones exhibit dual functionality: nematicidal activity at lower concentrations and growth-promoting effects at optimal concentrations, eliminating the adverse effects on plant growth
Data Source
AI summary
The present invention provides a synergistic composition of a nematicide comprising of combination of chalcones, chalcone 17 and chalcone 25, or chalcone 17 and chalcone 30 with potent nematicidal and nematostatic properties. The chalcones individually show 100% nematicidal activity at a concentration as high as 10−2-10−3 M, whereas, the combination of chalcone 17 and chalcone 25, or chalcone 17 and chalcone 30, show 100% nematicidal activity at concentration as low as 10−4-10−6 M bringing a synergistic effect, wherein the ratio of the chalcones is 1:1. These combinations of the chalcones also show potent nematostatic activity compared to each chalcone individually. This synergistic nematicidal composition is environmentally safe and non-toxic to humans and animals.