USDA Forest Service
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The U.S. Department of Agriculture Forest Service is a Federal agency that manages public lands in national forests and grasslands. The Forest Service is also the largest forestry research organization in the world, and provides technical and financial assistance to state and private forestry agencies. Gifford Pinchot, the first Chief of the Forest Service, summed up the purpose of the Forest Service—"to provide the greatest amount of good for the greatest amount of people in the long run." |
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1301041 Phomopsis cankers and twig blights Phomopsis spp. Symptoms Joseph O'Brien |
1198030 Cytospora canker of spruce Valsa kunzei Symptoms Joseph O'Brien |
5053097 chestnut blight or canker Cryphonectria parasitica Symptoms Joseph O'Brien |
5055024 Leucostoma canker of spruce Leucostoma kunzei Symptoms Joseph O'Brien |
5038034 Leucostoma canker of spruce Leucostoma kunzei Symptoms Joseph O'Brien |
5049007 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5037099 Leucostoma canker of spruce Leucostoma kunzei Symptoms Joseph O'Brien |
5297092 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5297093 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5297094 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5297095 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5297096 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5297097 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5297098 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5297100 chestnut blight or canker Cryphonectria parasitica People Joseph O'Brien |
5298001 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5298002 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5298003 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5298006 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5298007 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5298008 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5298009 chestnut blight or canker Cryphonectria parasitica Research Joseph O'Brien |
5030032 Cytospora canker of spruce Valsa kunzei Symptoms Joseph O'Brien |
5028096 Cytospora canker of spruce Valsa kunzei Infestation Joseph O'Brien |
5028097 Cytospora canker of spruce Valsa kunzei Infestation Joseph O'Brien |
5028098 Cytospora canker of spruce Valsa kunzei Infestation Joseph O'Brien |
1397001 Cytospora canker of spruce Valsa kunzei Symptoms Joseph O'Brien |
5049071 chestnut blight or canker Cryphonectria parasitica Symptoms Joseph O'Brien |
5049072 chestnut blight or canker Cryphonectria parasitica Control Joseph O'Brien |
5055023 Cytospora canker of spruce Valsa kunzei Fruiting Bodies Joseph O'Brien |
5051071 orange hobnail canker Cryphonectria gyrosa Symptoms Joseph O'Brien |
5050040 chestnut blight or canker Cryphonectria parasitica Symptoms Joseph O'Brien |
5050041 chestnut blight or canker Cryphonectria parasitica Symptoms Joseph O'Brien |
5050042 chestnut blight or canker Cryphonectria parasitica Culture Joseph O'Brien |
5050054 Cytospora cankers Cytospora spp. Symptoms Joseph O'Brien |
5050055 Cytospora cankers Cytospora spp. Symptoms Joseph O'Brien |
5050056 Cytospora cankers Cytospora spp. Symptoms Joseph O'Brien |
5050057 Cytospora cankers Cytospora spp. Symptoms Joseph O'Brien |
5050058 Cytospora cankers Cytospora spp. Symptoms Joseph O'Brien |
5050059 Cytospora cankers Cytospora spp. Symptoms Joseph O'Brien |
5050060 Cytospora cankers Cytospora spp. Symptoms Joseph O'Brien |
5050061 Cytospora cankers Cytospora spp. Symptoms Joseph O'Brien |
5050062 Cytospora cankers Cytospora spp. Symptoms Joseph O'Brien |
5050063 Cytospora canker of spruce Valsa kunzei Symptoms Joseph O'Brien |
5050064 Cytospora cankers Cytospora spp. Symptoms Joseph O'Brien |
5049069 chestnut blight or canker Cryphonectria parasitica Symptoms Joseph O'Brien |
5049070 chestnut blight or canker Cryphonectria parasitica Symptoms Joseph O'Brien |
5038032 Cytospora cankers Cytospora spp. Infestation Joseph O'Brien |
5038033 Cytospora cankers Cytospora spp. Infestation Joseph O'Brien |
5037098 Cytospora cankers Cytospora spp. Symptoms Joseph O'Brien |
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