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Aster yellows and aster leafhopper

Description

Aster yellows is a phytoplasma organism. Phytoplasmas are specialized wall-less bacteria that are parasites known only to multiply in plant phloem tissue and insect vectors. There are 28 groups... More ≫

Description

Aster yellows is a phytoplasma organism. Phytoplasmas are specialized wall-less bacteria that are parasites known only to multiply in plant phloem tissue and insect vectors. There are 28 groups of phytoplasmas worldwide and seven known groups in Canada. In Canada, approximately 20 insect species can transmit aster yellows to more than 200 plant species. In Alberta, the most common insect vector is the aster leafhopper (Macrosteles quadrilineatus), also known as the six-spotted leafhopper. The leafhopper species Amplicephalus inimicus is also an important aster yellows vector in cereals.

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Economic thresholds for insects attacking oilseeds

Description

Many economic thresholds for insects attacking oilseed crops currently in use are nominal (i.e. unsupported by research). Some economic thresholds have been developed for major pests attacking... More ≫

Description

Many economic thresholds for insects attacking oilseed crops currently in use are nominal (i.e. unsupported by research). Some economic thresholds have been developed for major pests attacking crops in Western Canada. The following data have been compiled from various sources, including the guidelines published by the Western Committee on Crop Pests, and indicate the economic threshold recommendations being made.

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Lesser grain borer

Description

The lesser grain borer (Rhyzopertha dominica) is a grain-feeding insect found sporadically in southern Alberta. It is distributed worldwide, and in Canada, it has been reported from British... More ≫

Description

The lesser grain borer (Rhyzopertha dominica) is a grain-feeding insect found sporadically in southern Alberta. It is distributed worldwide, and in Canada, it has been reported from British Columbia, across the prairies and into Ontario and Quebec. However, this insect is rare in Canadian stored grain, and it is unlikely the insect can survive the entire winter in farm bins in western Canada.

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Wireworm

Description

Wireworms are destructive insect pests of grain crops in western Canada. The pest prefers cereal crops, but also feeds on potatoes, pulses and canola. The wireworm larva feed below ground on seeds... More ≫

Description

Wireworms are destructive insect pests of grain crops in western Canada. The pest prefers cereal crops, but also feeds on potatoes, pulses and canola. The wireworm larva feed below ground on seeds and shoots.

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Dryland agronomic management of soft white spring wheat and Canada prairie spring wheat in Alberta

Description

SWSW and CPS wheat are attractive crops for biofuel production due to the higher grain yield potential, weed competitiveness and starch content. From 2009 to 2012, field plot studies were... More ≫

Description

SWSW and CPS wheat are attractive crops for biofuel production due to the higher grain yield potential, weed competitiveness and starch content. From 2009 to 2012, field plot studies were conducted at five different soil zone/agro-ecological locations (Dark Brown, Thin Black – south, Thin Black – central, Black and Gray soil zones) in Alberta, with a focus on the Parkland Region. The study showed that SWSW and CPS wheat types can be grown successfully under dryland conditions in southern and central Alberta.

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West Nile virus

Description

The West Nile virus (WNV) is a mosquito-borne virus that can cause swelling and inflammation of the brain and spinal cord in horses, birds and humans. This fact sheet presents a summary about WNV... More ≫

Description

The West Nile virus (WNV) is a mosquito-borne virus that can cause swelling and inflammation of the brain and spinal cord in horses, birds and humans. This fact sheet presents a summary about WNV in Alberta and Canada, symptoms, treatment and protection of horses

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