Poisonous Plant Research
Lab
1150 E 1400 N
N Logan, UT 84341
(435)752-2941
Education
PhD 1983 Range Science (Grazing Management);
Texas A&M University
MS 1977 Range Economics; Utah State
University
BS 1973 Range Science; Utah State
University
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Sheep grazing cattle before larkspur
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Sampling locoweed for population studies
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Crooked calf grazing lupine
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Cattle grazing broom snakeweed as a biological control
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Research Projects:
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Evaluate grazing behavior of cattle with respect to poisonous plants:
larkspur, locoweed, lupine, broom snakeweed
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Target livestock grazing to control poisonous and noxious weeds
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Evaluate herbicide and biological controls of poisonous plants
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Assess ecology and population cycles of poisonous plants
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Determine environmental influences on toxin concentrations in plants
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Provide management recommendation to reduce
risk of poisoning and enhance sufficient use of rangelands.
Significant Accomplishments:
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Developed herbicide control recommendations for larkspur, locoweed, and
lupine.
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Developed management recommendations to reduce risk of locoweed poisoning.
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Developed biological tools to reduce risk of poisoning:
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Larkspur mired to deter grazing of larkspur
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Sheep grazing larkspur before cattle
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Conditioned food aversion
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Seed cool-season grasses to prevent reinvasion of loco and snakeweed and
provide alternative feed.
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Described snakeweed seedling ecology that drives its population outbreaks.
