Repression of Artogeia rapae (L.) (Lepidoptera: Pieridae) and Plutella xylostella (L.) (Lepidoptera: Yponomeutidae) on Fresh-Market and Processing Cabbage, Using Composite Action Thresholds for Chemical and Biological Control

AbstractAction thresholds for imported cabbageworm, Pieris rapae (L.), diamondback moth, Plutella xylostella (L.), and cabbage looper, Trichoplusia ni (Hübner), were evaluated on two cultivars of cabbage, Brassica oleracea var. capitata (L.), in Prince Edward Island. Thresholds were tested on plots of mid-season cabbage, cv. Minicole, and late-season cabbage, cv. Lennox, both grown for fresh market in 1991 and 1992. Management of larval populations at a threshold of 0.25 Cabbage Looper Equivalents (CLE) per plant resulted in yields equal to those obtained with bi-weekly applications or grower treatments. Higher thresholds of 0.50 and 1.0 CLE per plant were not as useful and did’ not consistently result in yields greater than untreated plots. Use of the threshold of 0.25 CLE per plant reduced the number of applications of insecticides by 30% compared with spraying insecticide at bi-weekly intervals from heading to harvest, and 43% compared with management by the grower without regard to insect populations or growth stage of the crop.

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An Integrated Biological Control Using an Endoparasitoid Wasp (Cotesia plutellae) and a Microbial Insecticide (Bacillus thuringiensis) against the Diamondback Moth, Plutella xylostella

Korean journal of applied entomology ◽

10.5656/ksae.2013.01.1.080 ◽

2013 ◽

Vol 52 (1) ◽

pp. 35-43 ◽

Cited By ~ 3

Author(s):

Kyusoon Kim ◽

Hyun Kim ◽

Young-Uk Park ◽

Gil-Hah Kim ◽

Yonggyun Kim

Keyword(s):

Biological Control ◽

Bacillus Thuringiensis ◽

Plutella Xylostella ◽

Diamondback Moth ◽

Cotesia Plutellae ◽

Microbial Insecticide

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Anthocoris nemorum (Heteroptera: Anthocoridae) as predator of cabbage pests – voracity and prey preference

Entomologica Fennica ◽

10.33338/ef.84494 ◽

2019 ◽

Vol 21 (1) ◽

pp. 12-18 ◽

Cited By ~ 1

Author(s):

Marie-Louise Rugholm Simonsen ◽

Annie Enkegaard ◽

Camilla Nordborg Bang ◽

Lene Sigsgaard

Keyword(s):

Biological Control ◽

Plutella Xylostella ◽

Frankliniella Occidentalis ◽

Diamondback Moth ◽

Western Flower Thrips ◽

Potential Candidate ◽

Model Species ◽

Flower Thrips ◽

Cabbage Pests ◽

Cabbage Aphids

Laboratory experimentswere performed with adult female Anthocoris nemorum (Linnaeus) (Heteroptera: Anthocoridae) at 20°C ± 1°C, L16:D8, 60–70% RH to determine voracity and preference on cabbage aphids (Brevicoryne brassicae L.) (Hemiptera: Aphididae), diamondback moth larvae (Plutella xylostella L.) (Lepidoptera: Plutellidae) and Western flower thrips (Frankliniella occidentalis Pergande) (Thysanoptera: Thripidae) (model species for cabbage thrips (Thrips angusticeps Uzel) (Thysanoptera: Thripidae)). When offered individually, A. nemorum readily accepted all three species with no significant differences in consumption. When aphids and moth larvae were offered simultaneously, A. nemorum showed preference for the latter (numbers eaten and biomass consumed). When aphids and thrips were offered together, A. nemorum preferred thrips in terms of numbers eaten but preferred aphids in terms of biomass consumed. The results showed that A. nemorum is a voracious predator of B. brassicae, P. xylostella and F. occidentalis and can therefore be considered as a potential candidate for biological control in cabbage.

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