Soybean Phytosterol-Fungicide Regimen for Rust Control and Yield
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Solution Overview
Problem
Current fungicide treatments for soybean diseases, particularly Asian soybean rust, fail to effectively control the disease and maintain or increase harvest yields, due to acquired resistance and the need for frequent applications, which are often ineffective in preventing or reducing disease severity.
Innovation Solution
A method involving a combination of at least two applications of a phytosterol composition comprising phytosterol and sucrose fatty acid ester with at least two applications of an organo-chemical fungicide, applied either before or after the onset of fungal diseases, to enhance disease control and yield improvement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organo-chemical fungicides are applied multiple times to control fungal diseases, then disease severity is reduced, but harvest yield is not guaranteed and may still be significantly affected
Solution Approach 1:
The invention combines organo-chemical fungicides with phytosterols (beta-sitosterol, campesterol, stigmasterol) to create a composite treatment that leverages both the direct antifungal properties of the chemical fungicide and the plant defense-stimulating effects of phytosterols, resulting in superior disease control and yield protection compared to fungicides alone
Solution Approach 2:
The invention changes the chemical composition parameters of the treatment by introducing specific phytosterol compounds (beta-sitosterol at 50-70%, campesterol at 10-30%, stigmasterol at 10-30%) to modify and enhance the biological activity of the fungicide treatment, improving both disease control and yield outcomes
2Reliability
If frequent applications of fungicides are made to maintain protection, then disease control is improved, but the complexity of the treatment regimen increases and efficiency decreases
Solution Approach 1:
The phytosterol component provides continuous plant defense stimulation that persists between fungicide applications, maintaining protective action and reducing the need for frequent re-application of the complete treatment regimen
Solution Approach 2:
Phytosterols priming the plant's defense system in advance creates a longer-lasting protective effect that reduces the frequency needed of subsequent fungicide applications, simplifying the overall treatment schedule
3Reliability
If organo-chemical fungicides are used to control disease, then some disease severity reduction is achieved, but yield remains significantly affected compared to untreated plants
Solution Approach 1:
Phytosterols activate the plant's own defense mechanisms, enabling the soybean plant to fight the fungal disease itself through enhanced immune responses, leading to better yield protection than external chemical treatment alone
Data Source
AI summary
The invention relates to a method of cultivating soybean exposed to at least one fungal disease comprising a step of applying to said cultivated soybean an effective treatment with a fungicide composition comprising at least fluxapyroxad in combination with at least two applications of a phytosterol composition comprising at least one phytosterol and at least one sucrose fatty acid ester to increase the yield of said cultivated soybean and/or to reduce the effects of said at least one fungal disease in comparison to soybeans under similar conditions treated only with the organo-chemical fungicide treatment.