Diamondback Moth, Plutella xylostella (L.), control studies on cabbage in St. Kitts

G.C. Yencho, T. Blanchette and E. Dolphin

No 260411, 23rd Annual Meeting, August 23-28, 1987, St. John's, Antigua from Caribbean Food Crops Society

Abstract: Diamondback moth (DBM) (Plutella xylostella (L.» insecticide efficacy and population dynamics studies were conducted in 51. Kitts 1985 1987. Experiment station and "on-farm" trials were conducted in addition to monitoring small farmers cabbage crops for DBM and Apanteles plutellae population levels. Pennethrin, Bacillus' thuringiensis (Berliner), and pirimiphos-methyl, controlled DaM adequately. Peaks in A. plutellae parasitism coincided with a predominance of 4th instar larvae. The presence of high parasite populations delayed the time to first spray. A relative growth rate analysis of DBM populations indicated that growth rates are correlated to percent A. plutellae parasitism. It is hypothesized that parasitism levels exceeding 25-35% may control DBM populations.

Keywords: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies (search for similar items in EconPapers)
Pages: 8
Date: 1987-08-23
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Persistent link: https://EconPapers.repec.org/RePEc:ags:cfcs87:260411

DOI: 10.22004/ag.econ.260411

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