| 摘要 |
A novel combination of one or more avermectin compounds of formula <CHEM> where the broken line indicates either a single or a double bond at the 22,23-position; n is 0 or 1, and when n is 0 a hydrogen is present at the 13-position; R1 is hydrogen or <CHEM> R2 is hydrogen or hydroxy provided that R2 is present only when the broken line indicates a single bond; R3 is sec-butyl or isopropyl; and R4 is hydrogen or methyl, with agricultural spray oil is synergistic in such a manner as to allow for a drastic reduction in the amount of active ingredient that is fully effective and also to provide a dramatic extension of the period over which such a combination is fully effective. The synergistic combination is useful as an agricultural insecticide and miticide against a variery of insects and mites which infest a variety of plants. |
