Chemistry: fertilizers – Processes and products – Forms or conditioning
Patent
1990-02-14
1992-05-12
Raymond, Richard L.
Chemistry: fertilizers
Processes and products
Forms or conditioning
435254, A01N 6304, C12N 114
Patent
active
051123819
ABSTRACT:
A biologically pure culture of Pythium rostratum is disclosed which produces zoosporangia which produce zoospores capable of killing knapweed. Also disclosed is a method for killing knapweed, comprising: (a) growing Pythium rostratum which selectively kills knapweed on a carrier saturated with a liquid nutrient capable of supporting Pythium rostratum growth and the production of zoosporangia; and (b) applying the Pythium rostratum carrier to knapweed-infested land under moisture and temperature conditions sufficient to support Pythium rostratum growth and zoospore release by the zoosporangia, such that the zoospores are produced which are capable of killing knapweed.
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Clardy M.
Raymond Richard L.
The Confederated Tribes of the Colville Reservation
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