Rheological properties and efficacy of fenaminstrobin·tricyclazole 25％suspension concentrate
[Aims]Different formulations of fenaminstrobin·tricyclazole 25％suspension concentrate were prepared to investigate its rheological properties and efficacy.[Methods]Using high-throughput formulation equipment,we prepared the suspension system formulations,measured their viscosity,characterized their rheological properties,and conducted the efficacy tests of them.[Results]The fenaminstrobin·tricyclazole 25％suspension concentrate with formulation a-2-4 exhibited viscosity of 308 cp,and the residual content after pouring was 4.2％,which conforms to the Herschel Bulkley model.The yield value τH was 2.1885,the viscosity index k was 0.0423,and the flow characteristic index n is 0.9163.It had the best stability and the best control effect on rice blast disease,with an EC90 of 4.2515 mg/L.[Conclusions]Different formulation systems were prepared,and rheological curves were fitted through comparative studies on viscosity,yield value and viscosity index.Finally,a new formula of fenaminstrobin·tricyclazole 25％suspension concentrate with good stability and better control efficacy was obtained.
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