Activity of 0-Ethyl S-Propyl Organophosphoros Compounds Against Tobacco Budworms and Boll Weevils

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.


In the laboratory, sprays of organophosphorus compounds with the O-ethyl S-propyl moieties were 5–100X more active against a susceptible strain of the tobacco budworm, Heliothis virescens (F.), and all except ER-9700, 9362, 9306, and NTN-9306 were 2–3X more active against the boll weevil, Anthanomus grandis Boheman, than certain alkyl or aryl O,O-dialkyl organophosphorus compounds. LD50'S for topical applications of Bay NTN-9306, (O-ethyl 0- [4-(methylthio)phenyl] S-propyl phosphorodithioate) to a susceptible and a field-collected strain of the tobacco budworm differed ca. 8X (0.024 and 0.19 mg/g after 48 h, respectively); this might indicate a potential for resistance to this new class of organophosphorus compounds. In the field, NTN-9306, Rohm & Haas RH-218 (O-ethyl S-propyl O-(2,4,6-trichlorophenyl) phosphorothioate), and Ciba-Geigy CGA-15324 (O-(4-bromo-2-chlorophenyl) O-ethyl S-propyl phosphorothioate), each applied at a rate of 1 lb/acre, reduced damage to bolls by Heliothis spp. (predominately the tobacco budworms) 81–85% compared with bolls in untreated plots.

Document Type: Research Article

Publication date: February 1, 1977

More about this publication?
Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more