Technology Research Of The Application Of Propineb And Imidacloprid Against CMV And TMV Of Pepper And Tobacco

Virus disease is one of the major diseases threatening agricultural plants. It's increasing in destruction, especially on pepper and tobacco plants. Their quantity and quality are damaged severely. CMV is a special one from the point that they are carried and spread by insects. When considering control strategy on virus disease, insects are an important target. Imidacloprid can achieve good and lasting effect on control of piercing-sucking insects, thus reducing the chance of plants infected by these insects carrying virus. Propineb is a protective fungicide and rich in free Zn. This experiment blend used Propineb and Imidacloprid against pepper and tobacco virus. The results is mainly as following:1 After being infected by CMV, SOD activity lower, While POD and PPO activity go up and turn down then. It is through absorbing the combined Zn in Propineb, that the SOD activity in pepper leaf get enhanced and POD adjusted. But this process has no significant effect on PPO activity.2.ZnSO4 can significantly influence the Zn content in pepper leaf. The content in pepper leaf is highest among all the other treatment. But the content in fruit indicates that the transportation of ZnSO4 doesn't function well. While Propineb can greatly help this transportation, consequently enhance plant yield and its resistance ability on virus. This is part of the theoretical foundation for the combined application of Propineb and Imidacloprid against pepper cucumber mosaic virus and tobacco mosaic virus.3. The content of chlorophyll increase through the spray of Imidacloprid and Propineb.4.The death rate of aphis at 24h,48h through combined application of Imidacloprid and Propineb is 4.2% and 1% higher respectively than separate application of Imidacloprid, though this effect is not significant. And the combined application can also achieve better control effect on pepper and tobacco CMV&TMV.5.Propineb and Imidacloprid blend application has noticeable addition effect on CMV&TMV This is functioned in two ways: Propineb can supply plenty Zn to plants...