Her Majesty the Queen in Right of Canada, as Represented by the Minister of Agriculture and Agri-Food

Susan Boyetchko

Karen Sawchyn

Ting Zhou

Tim Dumonceaux

Patrice Audy

Rejean Desgagnes

Jon Geissler

Bacterial strains, or extracts thereof, are effective to control, treat or prevent infection of solanaceous plants with, the causative agent of potato late blight disease. Also provided are biopesticidal formulations containing one or more of the bacterial strains or extracts thereof, and the use of the bacterial strains, extracts or biopesticidal formulations in the control, treatment and/or prevention of potato late blight disease.

Biopesticides for potato late blight disease

The present invention provides an isolated biocontrol agent, or a biocontrol composition, comprising, at least one Pseudomonas strain that exhibits weed suppressive activity. Preferably, the biocontrol composition comprises an acceptable medium such as a liquid culture medium, a solid culture medium, a seed coating, pesta, peat prill, vermiculite, clay, starch, wheat straw, or any combination thereof. The biocontrol agent or biocontrol composition may be used to suppress the growth of a weed. The weed may be selected from the group consisting of green foxtail ([L.] Beauv.), foxtail barley (), crabgrass (), annual ryegrass (), barnyard grass (), yellow foxtail (), Italian rye grass (), Goose grass (), and wild oat (). Furthermore, the biocontrol agent or composition may be applied to soil before, during or after planting crops in the soil.

Pre-emergent biological control agents

Growing community of inventors

Saskatoon, Canada

Susan Boyetchko