| 摘要 |
<p>An insecticidal agent comprising, as an active substance thereof, a cypermethrin composition consisting of a mixture of the 1S-cis-S, 1R-cis-S, 1S-trans-S, and 1R-trans-S isomers in which the isomers are present in approximately equal concentrations, which contains at least 88 percent of total cypermethrin isomers and at least 80 percent of S-isomers of cypermethrin, and which has a cis/trans ratio in the range of 45/55 to 55/45. This insecticidal agent is usable for the control of pests attacking agricultural crops.</p> |
