Response of Soybean Insects to Foliar Applications of a Chitin Synthesis Inhibitor TH 6040

Authors

S. G. Turnipseed, Clemson University
E. A. Heinrichs, EMBRAPA/USAIDFollow
R. F. P. da Silva, Instituto Pesquisa Agronomicas
J. W. Todd, University of Georgia

Date of this Version

1974

Citation

Journal of Economic Entomology 67:6 (1974), pp. 760–762.

doi: 10.1093/jee/67.6.760

Comments

Copyright © 1974 Entomological Society of America. Published by Oxford University Press. Used by permission.

Abstract

The activity of TH 6040, a chitin synthesis inhibitor, was determined against velvetbean caterpillar, Anticarsia gemmatalis Hübner, and other soybean defoliators in field tests in Georgia, South Carolina, and Brazil. Single applications at rates as low as 75 g AI/ha afforded adequate initial and excellent residual control of A. gemmatalis and some suppression of low populations of Plusia spp. Two applications at higher rates gave significant control of soybean looper, Pseudoplusia includens (Walker), and showed promise against green cloverworm, Plathypena scabra (F.), and Mexican bean beetle, Epilachna varivestis Mulsant. Populations of geocorids and nabids were lower in 1 test, possibly because of insecticidal activity, scarcity of prey, or both.