Title: Susceptibility of Sucra Jujuba Chu to Pyrethroid Insectides and Synergism of Cyfluthrin Combined with Phoxim
Abstract: With topical application method the susceptibility of field populations of the zizyphus geometrid,\%Sucra jujuba\% Chu, collected from Jinzhong region, to pyrethroid insecticides was tested in 1992 and 1999, and the synergism of cyfluthrin combined with phoxim to this pest also was tested. Results showed that compared with LD\-\{50\} value the sensitive order of this pest to pyrethroids in 1992 was deltamethrinflucythrinatecypermethrinfenpropathrinS5602fenvalerate, and in 1999 was deltamethrinalphacypermethrincyfluthrinfenvaleratefenpropathrin. Taking the LD\-\{50\}'s tested in 1992 as susceptible baseline, the resistance ratio of this pest to deltamethrin, fenvalerate and fenpropathrin were 7 4-, 6 6-, 26 8-fold, respectively. This indicated that the pest has developed low to medium level resistance to the three pyrethroids. Cyfluthrin mixed with phoxim in 1:1 produced significant synergism to this pest, and CTC was 173 5.
Publication Year: 2001
Publication Date: 2001-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot