Greenhouse tests showed that 0.2% camptothecin emulsifiable concentrate (EC) has strong contact toxicity to three agricultural pests, with LC50 and LC90 values of 0.1–0.6 and 0.4–5.0 mg liter-1, respectively. The descending order of susceptibility was Nilaparvata lugens (Ståhl) > Brevicoryne brassicae (L.) > Chilo suppressalis (Walker). Field tests showed that the corrected mortality of B. brassicae and N. lugens was 94.6 and 69.1%, respectively, which was not significantly different from that with 10% imidacloprid WP at 98.4 and 63.4%, respectively. The corrected mortality of C. suppressalis was 85.8%, which was not significantly different from that with 5% Regent SC at 93.0%. Camptothecin EC showed no acute oral toxicity to the mouse (LD50 > 5,000 mg/kg) nor acute dermal toxicity (LD50 > 2,000 mg/kg).
How to translate text using browser tools
1 April 2010
Insecticidal Activity of Camptothecin Against Nilaparvata lugens, Brevicoryne brassicae, and Chilo suppressalis
Jianyi Ma,
Senmiao Tong,
Pinwei Wang,
Wenli Liao,
Hongbo Liu,
Liqin Zhang
ACCESS THE FULL ARTICLE
It is not available for individual sale.
This article is only available to subscribers.
It is not available for individual sale.
It is not available for individual sale.
Journal of Economic Entomology
Vol. 103 • No. 2
April 2010
Vol. 103 • No. 2
April 2010
Brevicoryne brassicae
camptothecin
Chilo suppressalis
natural insecticide
Nilaparvata lugens