Iprodione Trifloxystrobin Mixture for Snow Mold Control
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Solution Overview
Problem
Current fungicides for controlling snow moulds and dollar spot in turfgrass are ineffective due to variable fungus inoculum levels, snow cover duration, and winter temperatures, requiring high doses and multiple applications, which can delay turfgrass recovery and lead to invasion by weedy species.
Innovation Solution
A composition comprising a combination of dicarboximide and 3-phenyl hydantoin fungicides, specifically iprodione and trifloxystrobin, in specific molar ratios, applied to turfgrass to inhibit a spectrum of snow moulds and dollar spot, with optional inclusion of chlorothalonil, providing effective fungicidal properties even under prolonged snow cover or tarping conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high doses of single fungicides are used to control snow moulds and dollar spot, then fungicidal effectiveness is improved, but the number of applications required increases and turfgrass recovery is delayed
Solution Approach 1:
The patent combines two fungicides with different modes of action (dicarboximide and 3-phenyl hydantoin) into a single application mixture. This merging of chemicals allows achieving reliable control of snow moulds and dollar spot with one treatment instead of multiple high-dose applications, thereby reducing the loss of time for turfgrass recovery while maintaining effective fungicidal action.
Solution Approach 2:
The invention uses a composite fungicidal formulation containing iprodione (dicarboximide) and trifloxystrobin (3-phenyl hydantoin) in specific ratios. This composite material provides synergistic or additive effects that enhance reliability of disease control while reducing the total number of applications needed, thus addressing both the effectiveness and time loss contradiction.
2Reliability
If multiple applications of fungicides are applied to control mould infections, then fungicidal effectiveness is improved, but device complexity and operational complexity increase
Solution Approach 1:
By merging two fungicides into a single tank-mixable formulation, the patent reduces the application program from multiple separate treatments to one combined application. This simplifies the operational complexity and device complexity involved in administering the fungicidal program while maintaining effectiveness through the complementary modes of action of the two chemicals.
3Reliability
If high doses of fungicides are used to control extensive mould infection, then fungicidal effectiveness is improved, but harmful factors increase including weedy species invasion
Solution Approach 1:
The patent changes the parameters of the fungicidal treatment by using a balanced combination of two chemicals at moderate doses rather than high doses of a single fungicide. This parameter change in the treatment regimen achieves effective control of extensive mould infections while minimizing disruption to the turfgrass ecosystem, thereby reducing the occurrence of harmful effects such as weedy species invasion.
Data Source
AI summary
A composition for treating fungus infection of turfgrass, such as snow mold infection, comprises a mixture of fungicidally effective amounts of formulae 1 and 2:and in particular mixtures of iprodione and trifloxystrobin. A method for treating snow molds comprises applying the mixture before the onset of continuous snow cover, in at least one application.