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Biology and Biological Control of Knapweed


48 Images
1350045
University of Idaho Archive
University of Idaho

in Northern Idaho

1350046
Linda Wilson
University of Idaho

rosette

1350047
Cindy Roche

1350048
Cindy Roche

seedhead

1350049
Cindy Roche

1350078
Cindy Roche

1350050
Cindy Roche

1350051
Cindy Roche

seedhead

1350052
Cindy Roche

in flower

1350053
Cindy Roche

seedhead

1350054
Cindy Roche

in flower

1350055
Cindy Roche

seedhead

1350056
Cindy Roche

in flower

1350057
Cindy Roche

seedhead

1350079
USDA APHIS PPQ Archive
USDA APHIS PPQ

1350058
University of Idaho Archive
University of Idaho

in knapweed

1350080
Biological Control of Weeds in the West Field Guide
Western Society of Weed Science

1350059
University of Idaho Archive
University of Idaho

in seedhead

1350081
USDA APHIS PPQ Archive
USDA APHIS PPQ

1350082
USDA APHIS PPQ Archive
USDA APHIS PPQ

1350060
University of Idaho Archive
University of Idaho

1350061
University of Idaho Archive
University of Idaho

1350062
J. Johnson
University of Idaho

1350083
Nez Perce BioControl Center Archive
Nez Perce BioControl Center

defoliation of knapweed

1350063
Linda Wilson
University of Idaho

emergence hole

1350084
Biological Control: A Guide of Natural Enemies of North America Web Site
Cornell University

1350085
USDA APHIS PPQ Archive
USDA APHIS PPQ

1350086
Nez Perce BioControl Center Archive
Nez Perce BioControl Center

being released on spotted knapweed

1350087
Nez Perce BioControl Center Archive
Nez Perce BioControl Center

1350088
Nez Perce BioControl Center Archive
Nez Perce BioControl Center

at the base of knapweed rosette leaf

1350089
USDA APHIS PPQ Archive
USDA APHIS PPQ

in knapweed root

1350090
USDA APHIS PPQ Archive
USDA APHIS PPQ

1350091
USDA APHIS PPQ Archive
USDA APHIS PPQ

1350064
J. Johnson
University of Idaho

1350092
Biological Control: A Guide of Natural Enemies of North America Web Site
Cornell University

in knapweed root

1350066
University of Idaho Archive
University of Idaho

1350093
Nez Perce BioControl Center Archive
Nez Perce BioControl Center

1350067
University of Idaho Archive
University of Idaho

in a knapweed root

1350068
University of Idaho Archive
University of Idaho

1350069
University of Idaho Archive
University of Idaho

suitable for a biocontrol program

1350070
Karen Loeffelman
University of Idaho

for insects

1350071
University of Idaho Archive
University of Idaho

1350072
University of Idaho Archive
University of Idaho

styrofoam-lined shipping box containing blue ice pack and biocontrol agent cartons

1350073
University of Idaho Archive
University of Idaho

releasing bioagents

1350041
Nez Perce BioControl Center Archive
Nez Perce BioControl Center

screen tent cage in which to release and contain knapweed bioagents

1350074
Sandy Kegley
USDA Forest Service

pheromone trap used to monitor adult male moths

1350075
Nez Perce BioControl Center Archive
Nez Perce BioControl Center

exit holes in spotted knapweed seedheads created by adult weevils

1350076
University of Idaho Archive
University of Idaho

measuring knapweed height at a quantitative monitoring site