Reaserch and development on formula of fluchlordiniliprole· methoxyfenozide 20%SC
[Aims]In order to develop formulation products of fluchlordiniliprole,methoxyfenozide was mixed with it to prepare fluchlordiniliprole·methoxyfenozide 20%SC.[Methods]Screening of single surfactant led to the preliminary results,and then the optimal dosage was determined by orthogonal optimization experiment.[Results]The optimal formulation of fluchlordiniliprole·methoxyfenozide 20%SC:fluchlordiniliprole 8%,methoxyfenozide 12%,G-5000 1%,1287 3%,X060 1%,defoamer AF.S-T050 0.5%,magnesium aluminum silicate 0.7%,xanthan gum 0.16%,glycerin 4%and finally replenished to 100%with water.All the indicators of the suspension concentrate were qualified and meet the national standards.The dynamic contact angle test showed that the formulation had a good spreading property on maize leaves,and the control effect of indoor and outdoor against Spodoptera exigua Hiibner reached more than 90%.[Conclusions]In the research of fluchlordiniliprole·methoxyfenozide 20%SC,the combination of polymer block polyether dispersant G-5000 and phosphate ester dispersant 1287 can make the formulation more stable,and addition of wetting agent X060 can reduce the surface tension and improve the extensibility of the formulation.