Showing Collections: 81 - 90 of 101
USDA Division of Forage Crops and Diseases Collection of Weed Photographs
USDA Drug and Poisonous Plant Investigations Photograph Collection
USDA Forage Crop Investigations Notebooks
USDA Fruit Laboratory Card Files
The USDA Fruit Laboratory Card Files contain a series of catalog cards describing of a wide range of fruits. Card entries include dates of information.
USDA Library Plant Sciences Card Catalog
USDA Molecular Plant Pathology Laboratory Photograph Collection
USDA Pear Psylla Control Investigations Lantern Slide Collection
The USDA Pear Psylla Control Investigations Lantern Slide Collection contains color lantern slides produced by the U.S. Department of Agriculture (USDA) Bureau of Entomology and Plant Quarantine, Fruit Insect Investigations, Pear Psylla Control. There are 13 slides of pears infected with pear psylla, 3 slides of maps, and a slide showing a chart of spraying operations in counties of Washington, Idaho, and Oregon in 1941.
USDA Pink Bollworm Project Photograph Collection
USDA Plant Introduction Station (Chico, California) Photograph Collection
USDA Plant Introduction Station (Miami, Florida) Records
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