Pests, Plant Diseases, and Weeds

Pests and Plant Diseases

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Bacterial Soft Rot and Lenticel Spot on Potato Tubers

Bacterial lenticel spot is one manifestation of bacterial soft rot on potato which is initiated at tuber lenticels. Soft rot is a wet, mushy rot of plant tissues that progresses rapidly, especially wh ...
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Biofumigant Cover Cropping in Potatoes: Dale Gies (Farmer to Farmer Case Study Series)

This case study is part of the Farmer-to-Farmer Case Study project, which explores innovative approaches regional farmers are using that may increase their resilience in the face of a changing climate ...
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Biological Control of Noxious Weeds

View Part 1 here!

View Part 2 here!

Biological control, or biocontrol, is the ...

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Biology and Management of the Potato Tuberworm in the Pacific Northwest

The potato tuberworm is an important pest worldwide, and has become a major concern for potato production in the Pacific Northwest in the last 5 years. Protecting potatoes with an integrated approa ...

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Biology of Hop Looper and its Natural Enemies

The hop looper is a native noctuid moth that was first reported as a pest of hops in the mid-1800s, but until recently has generally been regarded as a relatively minor and sporadic problem. Howeve ...

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Blackleaf in Grapes

Recent research shows that blackleaf in grapes is due to a combination of water stress and high UV-B radiation. Learn how to identify and control this disease in Concord and winegrapes by addressin ...

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Bronze Birch Borer

Planting birch trees as ornamentals has resulted in the spread of the bronze birch borer (Agrilus anxius Gory). Full color photographs and discussion cover symptoms, life history, stages from e ...
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Cabbage Seedpod Weevil Management in Canola (Oilseed Series)

As winter canola acreage increases in Washington State, the cabbage seedpod weevil is becoming a problem. In addition to canola, this tiny weevil can also feed on flixweed, tansy mustard, and whitetop ...
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Carpenter Ants: Their Biology and Control

Descriptions, drawings, and color photos of carpenter ants in different stages and habitats. Colony and damage photos included. Cultural and chemical control methods. No products recommended. ...
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