Browsing Electronic Theses and Dissertations by Subject "Cabbage -- Diseases and pests"

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The influence of cabbage cultivars on the fitness of Plutella xylostella (Linnaeus 1758) (Lepidoptera: Plutellidae) and its biological control agent Cotesia vestalis (Haliday 1834) (Hymenoptera: Braconidae)

Nethononda, Phophi Dzivhuluwani (2015-09)

The diamondback moth, Plutella xylostella (Linnaeus 1758.) (Lepidoptera: Plutellidae), is a major insect pest of Brassica crops in many parts of the world leading to economic losses amounting to an estimated US$ 4-5 billion. ...
The management of diamondback moth, Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae), population density on cabbage using chemical and biological control methods

Bopape, Malesela Jonas (2013-11)

The diamondback moth, Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae), is a cosmopolitan insect pest of Brassica crops. In South Africa, there are no action thresholds for its chemical control which makes it ...

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