Application of Spinosad SSD-SA NPs in Controlling Two Stored Grain Pests
In order to determine the control effect on two kinds of stored grain pests,spinosad SSD-SA NPs was used to treat the grain infected with Oryzaephilus surinamensis and Cryptolestes ferugineus by the grain mixing method.The experimental results indicated that the sensitivity of O.surinamensis to spinosad SSD-SA NPs was lower than that of C.ferugineus.The highest corrected mortality of the test agents against O.surinamensis and C.ferugineus were 71.70％and 90.29％,respectively.The control effects of different concentrations of spinosad SSD-SA NPs and pirimiphos-methyl EC were determined.The results indicated that the corrected mortalities of O.surinamensis and C.ferugineus were more than 82.90％and 97.95％,respectively,significantly higher than that of single dose of spinosad SSD-SA NPs.It was found that the control effect of spinosad SSD-SA NPs solution was affected by insect species,pesticide concentration,treatment time and ambient temperature.In practical application,a variety of influ-encing factors can be combined to improve the application technology,comprehensively formulate control strategies,and effectively control stored grain pests.
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