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Viral Diseases of Plants
https://ohioline.osu.edu/factsheet/plpath-gen-5
colorful) names based on the disease they cause—for example, tobacco ring spot, watermelon mosaic, barley ... provide an overview of key concepts in plant pathology. Plant pathology is the study of plant disease ... intracellular (inside cells) pathogenic particles that infect other living organisms. Human diseases caused by ...
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Diplodia Tip Blight of Two-Needled Pines
https://ohioline.osu.edu/factsheet/plpath-tree-03
examination, one can find that often this disease begins on new shoots, turning the new needles brown before ... diseases in the urban environment. It affects many common landscape pines in the Midwest, including ... disease is found throughout the Great Plains, Midwest, Northeast, and California. Figure 1. Typical tip ...
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Sclerotinia Stem Rot (White Mold) of Soybean
https://ohioline.osu.edu/factsheet/plpath-soy-3
present leaves that turn brown to tan. (A. Dorrance, OSU). Symptoms and Signs Diseased plants first appear ... Sclerotinia stem rot, or white mold, of soybean is a disease most commonly reported in high-yield soybeans in ... the North Central Region of the United States. Overall disease incidence and severity vary from year ...
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Fire Blight of Apples and Pears
https://ohioline.osu.edu/factsheet/plpath-fru-22-0
a common and very destructive bacterial disease of apples and pears (Figure 1). The disease is caused by ... (Rosaceae) family (Table 1). On apples and pears, the disease can kill blossoms, fruit, shoots, twigs, ... Crabapple Hawthorn Mountain Ash Pyracantha Quince Raspberry Spirea Disease Development Fire blight first ...
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mRNA Vaccines: The Next Generation Tool to Fight Infections
https://ohioline.osu.edu/factsheet/vme-34
cause disease. Several vaccines, such as those for smallpox in humans and rinderpest in cattle, have ... been so successful the disease is all but gone (Greenwood 2014). Traditional Vaccines Traditional ... disease. Live-attenuated vaccines treat: measles/mumps/rubella (MMR) rotavirus smallpox chickenpox For ...
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Bumble Bees and Solitary Bees & Wasps in Urban Landscapes
https://ohioline.osu.edu/factsheet/HYG-2143-10
the thorax and carpenter bees usually have a shiny patch on the tips of their abdomens. There are ... a relatively small area. There are several species in Ohio, but almost all are a dark brown to tan color and ... hovering back and forth over the turf or ground. The females clean out old burrows or construct new burrows ...
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It’s a Bird, It’s a Plane, It’s a Moth: The Sphinx Moths of Ohio
https://ohioline.osu.edu/factsheet/ent-0094
which caterpillars use to breathe. They are sometimes dark brown with dark spots and a black horn. They ... hornworm horns are black rather than red. Tomato hornworms can also be dark brown, though green is much ... throughout North America, as well as parts of Central America (Opler, 2000). With its mostly brown ...
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Oak Wilt
https://ohioline.osu.edu/factsheet/plpath-tree-02
of Plant Pathology, The Ohio State University Oak wilt is a serious and often deadly vascular disease ... (bur, chinquapin, post, swamp white, and white oak) (Figure 1B) are more tolerant of the disease and may ... “flags,” that is, whole branches or crown portions turning red-brown. Leaves of red oaks typically show ...
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Crop Tree Management: A Tool to Help You Achieve Your Woodland Goals
https://ohioline.osu.edu/factsheet/f-50
more insect and disease resistant, grow faster, and produce additional landowner benefits. In ...
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Phytophthora Root and Crown Rot of Fruit Trees
https://ohioline.osu.edu/factsheet/plpath-fru-06
cutting away the outer bark layer. A sharp line demarcates the reddish-brown (diseased) and white ... Pathology Phytophthora root and crown rots (sometimes called collar rot) are common and destructive diseases ... root rot. Symptoms Diseased trees are commonly found in poorly drained areas of the orchard or yard. ...