Field Experiments on Insecticidal Control of Insect Pests of Cabbage and Broccoli1

Publisher Website
Google Scholar
Abstract
Weekly applications of Thiodan (6,7,8,9,10,10-hexachloro-l,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepin-3-oxide) or Dibrom (l,2-dibromo-2,2-dichloroethyl dimethyl phosphate) gave better control of cabbage looper, Trichoplusia ni (Hbn.), and imported cabbageworm, Pieris rapae(L.), based on percentage of undamaged cabbage heads harvested than Methyl Trithion (0,0-dimethyl S-(p-chloro- phenylthio) methyl phosphorodithioate),phosphamidon,Kepone (decachloro-octahydro-l,3,4-metheno-2H-cyclobuta[cd] pentalen-2-one) or methoxy-chlor. Against cabbage looper on broccoli, dimethoate, Dibrom, or Thiodan followed by combinations of Dibrom and Perthane (1,1-dichloro-2,2-bis(p-ethylphenyl)ethane), and malathion and Perthane, gave higher reduction of cabbage looper in the heads at harvest than Methyl Trithion, phosphamidon, Thiodan (at one-half recommended dosage) or Am. Cyanamid 24055 (l,l-dimethyl-3-(p-acetamidophenyl) triazene). The latter, an antifeeding compound, significantly reduced feeding injury over untreated plots. Dimethoate is a particularly promising insecticide for control of cole crop insects.

This publication has 1 reference indexed in Scilit: