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This project is part of a collaborative research
and extension effort on the part of the University of Manitoba, staff of the
Manitoba Crop Diversification Centre, the Early Dying of Potato Taskforce of
Manitoba, potato producers and processes of Manitoba to prevent the spread
of Early Dying of Potato and disinfest areas afflicted with the disease.
Within recent years producers believe Early
Dying of Potato is an increasing constraint to realizing yield gains, and in
many cases it is believed to be causing yield declines. On-going studies
are showing the presence of the wilt-fungus Verticillium and the
root-lesion nematode Pratylenchus in many Manitoba potato producing
soils. Verticillium and Pratylenchus are the major causal
agents of Early Dying in other potato producing regions of North America.
This project develops disease control strategies
by targeting the removal of Verticillium and Pratylenchus from
infested soil in order to reduce disease. The approach to disinfestation of
soil is to identify green manure plants and organic amendments that most
reduce levels of Verticillium and Pratylenchus in soil. These
will be used in a 3-year field trial examining their effect in reducing
Early Dying of Potato at the Manitoba Crop Diversification Centre in
Winkler. Laboratory and greenhouse studies will evaluate and improve the
effectiveness of the treatments to reduce Early Dying of Potato in the
variety of soil types in which potatoes are grown in Manitoba. It is
expected that the results of this project will be relayed to producers
through extension activities of the collaborators and can result in improved
production efficiency and economic benefit to the potato industry in
Manitoba.
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