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  1. Powdery Mildew of Grape

    https://ohioline.osu.edu/factsheet/plpath-fru-37

    limited, and they appear as dark-brown to black patches that remain as dark patches on the surface of ... important disease of grapes worldwide. The disease generally is considered less economically important in ... Ohio than black rot or downy mildew. However, uncontrolled, the disease can be devastating on ...

  2. Bitter Rot of Grape

    https://ohioline.osu.edu/factsheet/plpath-fru-08

    spots Small, circular, whitish spot, which is soon surrounded by a brown ring Fungal fruiting bodies on ... Pathology Bitter rot has been recognized as a disease of grapes since 1887. The name was derived from the ... infected with bitter rot, the wine may be undrinkable. The disease is more common in the southern grape ...

  3. Black Rot and Frogeye Leaf Spot of Apple

    https://ohioline.osu.edu/factsheet/plpath-fru-07

    develop a series of brown and black concentric bands or rings. The rotted fruit finally turns black. The ... dark-brown concentric rings and a purple margin giving it a “frogeye” appearance. Black pycnidia, like those ... leaf spot are phases of a widespread and damaging disease of apple and crabapple. The fruit rot phase ...

  4. Soybean Rust

    https://ohioline.osu.edu/factsheet/plpath-soy-2

    Soybean rust (SBR), caused by the fungus Phakopsora pachyrhizi, is one of the most important diseases of ... favorable conditions and can cause severe defoliation. In regions where the disease has been reported, yield ... urediniospores and teliospores. Urediniospores are pale yellow-brown to salmon colored and have some ...

  5. The Dean’s Charity Steer Show returns to the Ohio State Fair

    https://cfaes.osu.edu/newsletter/cfaes-impact/july-august-2022/the-dean%E2%80%99s-charity-steer-show-returns-the-ohio-state-fair

    experienced Ohio 4-H youth, and a steer in the show ring. All proceeds will benefit Ronald McDonald House ...

  6. White Rot and Botryosphaeria Canker of Apple

    https://ohioline.osu.edu/factsheet/plpath-fru-42

    canker phase of the disease is most severe in trees weakened by drought, winter injury, sunscald, poor ... pruning, low or unbalanced nutrition, and other plant diseases. The fruit rot phase can be sporadic in ... to be affected than other varieties. Symptoms Fruit At first, small, reddish-brown spots appear ...

  7. Dean's Updates

    https://cfaes.osu.edu/deans-updates

    Below is an archive of updates from Dr. Cathann A. Kress, Vice President for Agricultural ... updates, please visit:  safeandhealthy.osu.edu 2022: October October 4: Dean's Update September ... September 22: Dean's Update September 9: Dean's Update August August 26: Dean's Update May ...

  8. Grape Black Rot

    https://ohioline.osu.edu/factsheet/plpath-fru-24

    one of the most damaging diseases of grapes in Ohio and other northeastern states. The disease is ... rachises and cluster stems (peduncles) of grapes. If the disease is not managed early in the season, the ... on a grape leaf. Inset shows the dark pycnidia that can be seen in the center of each spot. Disease ...

  9. Downy Mildew of Blackberry

    https://ohioline.osu.edu/factsheet/plpath-fru-48

    blackberry (Rubus sp.) is a systemic disease caused by the fungal-like pathogen Peronospora sparsa. Nearly ... all blackberry cultivars are susceptible to downy mildew. The disease also occurs on boysenberry, ... visible. Disease is most severe during wet weather with cool to warm temperatures. Figure 1. Downy mildew ...

  10. Brown Rot of Stone Fruits

    https://ohioline.osu.edu/factsheet/plpath-fru-29

    Pathology Brown rot is a common and destructive disease of peach and other stone fruits (plum, nectarine, ... appear in the spring as the blossoms open. Diseased flowers wilt, turn brown, and may become covered with ... from an infected peach. Figure 5. Brown rot disease cycle. We want to thank the New York State ...

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