Development, manufacture and application of Beta-Cypermethrin aqueous capsule suspension

Abstract

The optimal formula of Beta-Cypermethrin aqueous capsule suspension was screened out through the experiment, preparation and manufacture of basic formulas, which has no sedimentation, suspended drops of oil, peels and agglomerating and the diameter of capsule is in range of 10–30 μm, conformed to the technical requirement. The aftereffect of the 3.3% Beta-Cypermethrin aqueous capsule suspension which was manufactured according to the optimal formula was up more than 25 days. The experiments on controlling the larvae ofDendrolinmus superans Butler and the adults ofXylotrechus rusticus L were carried out with different concentrations of this chemical. The death rate reached 80% when 250 times solution of the chemical was sprayed on stem to control the larvae ofD. superans. For control of the adults ofX. rusticus, 200, 400 and 600 times solution of the chemical were applied and their control effects (death rate) reached 85.23%, 74.21% and 66.59% respectively. Two kinds of solution (200 times and 300 times) of the chemical were used to control the larvae ofD. superans in large area, and the control effect for both concentrations was over 90%.

References

[1] Delin Gao. The application of Microcapsulation on the pestcide [J]. Modern Chemical Industry, 2000, 2: 10-14. (in Chinese)

[2] Xiaona Han, Qingming Ren, Feng Wang. The research progress of pestcide Microcapsulation [J]. The Control of Medical Animals, 2001, 17(12): 666-669. (in Chinses)

[3] Yu Li, Aocongcong Xing, Guangpin Dong, et al. Study on compound preparation of the Microencapsulation of Mieyouniao 3 and ControlApripona germari (Hope) [J]. Forestry Science Res., 1999, 5: 23-26. (in Chinese)

[4] Kaiyou Pan. Study on Microencapsulation used as Sanitation linsecticide [J]. Journal of Biology and Control of China Agent, 1995, 26(3): 88-91.

[5] Fuming Huang, Zijie Pan. Development of Microencapsulation of Dichlorvos [J]. Guangxi Prevention Medicine, 1997, 3(2): 128-130. (in Chinese)

[6] Jianping Lu, Zonglin Sha. Summarization of microencapsulation [J]. Anhui Chemistry and Industry, 1998, 3: 8-10. (in Chinese)

[7] Jun Tian, Jie Wu, Keiyou Pan. The application of Microcapsulation on the pesticide. The Control of Medical Animals, 2000, 16(4): 205-207. (in Chinese)

[8] Yuqin Xin, Dong Wang, Caihong Hou. Study on Microencapsulation of Fenitrothion [J]. Journal of Harbin Institute of Technology, 1994, 26(3): 88-91.

[9] Qingmei Yuan, Hongwei Yang, Kai Yang, et al. The new preparation of Microcapsulation pesticide [J]. Journal of Yunnan University, 2002, 1: 25-27. (in Chinese)

[10] Ang Yuan, Ciqin Huang. The summarization of microcapsulation of pesticide [J]. Pestcide, 2000, 6: 10-13. (in Chinese)

[11] Yonkui Zhao. The applied progress of microencapsulation [J]. Journal of the Corps Educational Institute, 2000, 3: 11-12. (in Chinese)

[12] Liyun Zhu, Peilong Sun, Liqin Zhang. The applied progress of microcapsulation pestcide and microcapsulation technology [J]. Journal of Zhejiang Forestry College, 2002, 1: 31-35. (in Chinese)