Insecticides Tested for Wireworm Control on Cigar-Wrapper Tobacco1

Publisher Website
Google Scholar
Abstract
Broadcast applications of 17 insecticidal compounds in various formulations were evaluated for control of the southern potato wireworm, Conoderus falli Lace. and the tobacco wireworm, Conoderus vespertinus (F.), on cigar-wrapper tobacco. Efficiency of some treatments varied with the density of wireworm infestations and distribution of insecticide in the soil. Ethylene dibromide as recommended for nematode control did not give adequate control of aheavy wireworm infestation. Compounds which gave good results were Baver 25141 [O.O-diethyl O-p-(methyl-sulfinyl) phenyl phosphorothioate], diazlnon, GS-13005 [O,O-dimethyl phosphorodtthloate S-ester with 4- (mercaptomethyl) -2-methoxy-Al -l,3,4-thiadiazolin-5-one], Kepone (decachlorooctahydro-l,3,4-metheno-2H-cyclobuta[cd]pentalen-2-one), N-2790 (O-ethyl-S-phenyl-ethyl-phosphonodtthioate), Niagara 9203 [O,O-dimethyl phosphorothioate S-ester with 3-(mercaptomethyl)-2-benzoxazolinone], and parathlon. None of the compounds were phytotoxic except Niagara 10242 (2,3-dihydro-2,2-dimethyl-7-benzofuranyl methylcarbamate), which caused considerable chlorosis, deformity, and necrosis in the tobacco foliage.