›› 2000, Vol. 43 ›› Issue (-1): 51-56.

• RESEARCH PAPERS • Previous Articles     Next Articles

The effect of adjuvants on penetration of beta-cypermethrinacross the armyworm epidermis(Mythimna separata Walker)

WANG Yi,ZHANG Li-ta, ZHENG Fei-neng, CHEN Fu-liang,LIANG Wen-ping   

  • Online:2000-12-20 Published:2000-12-20

Abstract: The effects of various adjuvants (mineral oil, higher aliphatic acid and nonionic surfactant) and two application methods (topical and immersion) on the penetration of beta-cypermethrin across the armyworm (Mythimna separata Walker) epidermis were studied. The results showed that the penetration was directly correlated with the concentration of adjuvants and with the time course after application, within the definite range of adjuvant concentration. A coordination effect of two types of adjuvant on the penetration was found.

Key words: adjuvant, beta-cypermethrin, penetration, non-ionic surfactant