plant diseases and disorders

Content Description

The Charles Drechsler Papers consist of the figures or illustrations for two articles that were published in the Journal of Botany in 1954 and 1956, titled "Two Species of Conidiobolus with Minutely Ridged Zygospores" and "Two New Species of Conidiobolus." There are also notes and pencil drawings for an unpublished article on Helminthosporium spp., a few letters, and specimens of cereal crops with plant diseases.

Content Description

The Erwin Frink Smith Papers contain Smith's notes, writings, letters, and publications. Notable writings include his first paper on bacteria as a plant pathogen, his first paper on the fungus infestation of soils, material on the Fischer-Smith polemic, the results of his studies on crown gall in plants and its relation to cancer in animals, and his Bibliography of Peach Yellows.

Content Description The Paul R. Miller Collection of George Washington Carver Correspondence contains correspondence between Carver and his friend Paul R. Miller, who was an Agricultural Research Service scientist. There are three handwritten letters dated 1932 and 1933 from Carver to Miller, and a reply from Miller dated 1932 regarding rust specimens. A signed portrait from Carver to Miller (1938) is included. Additionally, there are two typed letters dated 1943 from Rackham Holt to Miller. Holt, who was the...

Content Description The USDA Bureau of Entomology and Plant Quarantine Collection contains materials related to the Japanese beetle, the mountain pine beetle, and Dutch elm disease. There are black and white photographs, bark samples, insect specimens, and framed examples of foliage damage from the insects. Text accompanies the samples. In 2018, ten undated postcards were added from the Bureau of Entomology, depicting mostly parasites of the gypsy moth and the brown-tail moth, as well as representing the gypsy...

Content Description The USDA Division of Cereal Crops and Diseases Photograph Collection contains glass and acetate negatives, as well as black and white prints. Subjects include aspects of cereal crop classification, production, utilization, farm machinery, diseases, and pests in the United States and foreign countries. Crops pictured include corn, barley, oats, sorghum, sorgo, milo, millet, wheat, flax, rice, rye, and kafir. A number of the negatives were used in the Journal of Agricultural Research, U.S....