Low Molecular Weight Guar Gum Seed Treatment
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Solution Overview
Problem
Current seed treatment methods using high molecular weight cationic guar gums result in thick, poorly fluid aqueous compositions that hinder effective seed coating, and existing solutions are not suitable for organic farming or do not significantly enhance plant growth and biomass development.
Innovation Solution
A method involving the use of low molecular weight guar gum with an average molecular weight between 2,000 and 90,000 Daltons for seed treatment, which can be applied as a coating or in situ, allowing for improved germination rates, biomass development, and crop yield, even under insufficient irrigation, while being environmentally friendly and compliant with organic farming standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high molecular weight cationic guar gum is used for seed treatment, then plant growth enhancement is achieved, but the aqueous composition becomes thick and has poor fluidity
Solution Approach 1:
The patent applies parameter changes by reducing the molecular weight of guar gum from high molecular weight (conventional) to low molecular weight (2,000-90,000 Daltons). This parameter change in molecular weight fundamentally alters the rheological properties of the aqueous composition, reducing viscosity and improving fluidity while preserving the plant growth enhancement benefits. The molecular weight parameter is specifically controlled to achieve the desired balance between effectiveness and applicability.
2Reliability
If cationic guar derivatives are used to improve seed treatment effectiveness, then outstanding benefits are achieved, but they are not qualified for application in organic agriculture
Solution Approach 1:
The patent applies the taking out principle by extracting the cationic substituent groups from the guar gum structure. Instead of using chemically modified cationic guar derivatives, the invention uses native guar gum with naturally occurring lower molecular weight chains. This extraction of the chemical modification while retaining the base polysaccharide structure makes the treatment compatible with organic farming standards while maintaining effectiveness through the molecular weight reduction strategy.
3Productivity
If high molecular weight polysaccharide is used for seed coating, then crop yield increase is achieved, but the composition has poor fluidity and difficult application
Solution Approach 1:
The patent applies parameter changes by modifying the molecular weight parameter of the polysaccharide from high to low (2,000-90,000 Daltons). This parameter change directly impacts the flow characteristics and viscosity of the coating composition, making it easier to apply to seeds while maintaining the productivity-enhancing effects on crop yield. The specific molecular weight range is optimized to balance coating quality and application ease.
Data Source
AI summary
The present invention provides a method for increasing the growth of a plant by contacting a seed of the plant with a composition comprising a guar gum having an average molecular weight of between 2,000 Daltons and 90,000 Daltons. The present invention also provides a seed treated with a guar gum having an average molecular weight of between 2,000 Daltons and 90,000 Daltons.