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Cabbage seedpod weevil

Description

The cabbage seedpod weevil (Ceutorhynchus obstrictus) was introduced to North America from Europe about 70 years ago. The weevil was discovered in British Columbia in 1931, and from there, it... More ≫

Description

The cabbage seedpod weevil (Ceutorhynchus obstrictus) was introduced to North America from Europe about 70 years ago. The weevil was discovered in British Columbia in 1931, and from there, it dispersed south and eastward, so it now occurs throughout most of the United States. It was first found infesting canola in southern Alberta in 1995, and since then, the weevil has spread to central Alberta and southwestern Saskatchewan. In 2000, it was found in Québec for the first time.

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Cabbage thrips in Alberta

Description

In recent years, an increase in the incidence of bronzing and roughened leaf texture on cabbages grown in southern Alberta has sometimes made the cabbages unacceptable for either the fresh or... More ≫

Description

In recent years, an increase in the incidence of bronzing and roughened leaf texture on cabbages grown in southern Alberta has sometimes made the cabbages unacceptable for either the fresh or processing market. This damage is associated with high populations of thrips, tiny insects that feed by rasping and piercing the outer cell layers of the leaves and ingesting the exposed cell contents. The damaged tissue desiccates and allows the entry of disease organisms. When thrips feed, they leave small black specks (fecal pellets) on the injured plant parts.

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Cabbage maggot

Description

Cabbage maggot arrived in North America from Europe in the 19th century and is now common throughout the Prairies. The insect can be a serious pest of cruciferous crops such as canola, mustard,... More ≫

Description

Cabbage maggot arrived in North America from Europe in the 19th century and is now common throughout the Prairies. The insect can be a serious pest of cruciferous crops such as canola, mustard, cabbage, rutabaga, radishes, cauliflower and broccoli.

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