Insecticidal Activity of <i>Eupatorium fortunei</i> Essential Oil Against <i>Schizaphis graminum</i> and Its Effects on Detoxification Enzymes.

ABSTRACT: Schizaphis graminum is the most important pest of wheat, and its feeding harm not only affects photosynthesis but also causes diseases, posing a serious threat to wheat production. We measured the contact killing and fumigation activities, population changes, enzyme activities, and nanoemulsion physicochemical property of Eupatorium fortune essential oil (EFEO) and pyrethrin against S. graminum and its natural enemy (Harmonia axyridis). Toxic effects of EFEO and pyrethrin increased with increasing concentration. After 24 h of contact killing, the LD₅₀ of S. graminum were 9.23 and 0.02 μg/head, respectively. Harmonia axyridis were 36.71 and 0.07 μg/head. The fumigation of EFEO LD₅₀ on S. graminum was 9.779 mg/L (y = 2.88

SUBMITTER: Wang G 

PROVIDER: S-EPMC12653214 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature