{"id":13449,"date":"2014-02-10T15:06:24","date_gmt":"2014-02-10T20:06:24","guid":{"rendered":"https:\/\/extension.umaine.edu\/publications\/?page_id=13449"},"modified":"2024-05-22T09:30:20","modified_gmt":"2024-05-22T13:30:20","slug":"1020e","status":"publish","type":"page","link":"https:\/\/extension.umaine.edu\/publications\/1020e\/","title":{"rendered":"Bulletin #1020, Sooty Mold of Barley and Other Small Grains"},"content":{"rendered":"\n

Bulletin #1020, Sooty Mold of Barley and Other Small Grains (PDF)<\/a><\/p>\n\n\n\n

By Steven B. Johnson, Extension crops specialist, University of Maine Cooperative Extension<\/em><\/p>\n\n\n\n

For information about UMaine Extension programs and resources, visit extension.umaine.edu<\/a>.<\/strong>
Find more of our publications and books at extension.umaine.edu\/publications\/<\/a>.<\/strong><\/p>\n\n\n

\n
\"Sooty<\/a>
Sooty mold on grain head. Photo by Steven B. Johnson.<\/figcaption><\/figure><\/div>\n\n\n

Sooty mold of barley and other small grains can be caused by a number of fungal species, including Alternaria<\/i>, Cladosporium<\/i>, Stemphylium<\/i>, or Epicoccum<\/i>. These can be weakly parasitic, but generally, are saprophytic fungi that colonize dying plant parts when conditions are favorable. In Maine, Cladosporium <\/i>spp. is the dominant species causing sooty mold. Sooty molds are not limited to small grains and have a worldwide distribution. While the effects of sooty mold are generally not thought to be economically important, the symptoms can increase markedly with delayed harvest under wet and warm conditions. Crops that are weakened by poor nutrition, insect damage, or disease are more susceptible to sooty mold than healthy, pest-free crops. The appearance of severe sooty mold can result from crop-production problems or delayed harvest.<\/p>\n\n\n\n

Symptoms<\/strong><\/h3>\n\n\n\n

Other cereal-head diseases differ in that they are more than just superficial. Sooty-mold-affected grain heads have black discoloration and are covered with sooty-looking mold, giving them a weathered appearance. In cases where symptoms are not severe, only the tissue surrounding the grain is affected, but not the grain itself. In these cases, yield or test weight is not affected. Severe symptoms associated with delayed harvest can result in lesions on the kernels and this can reduce the quality of the harvested grain. Harvest releases spores from the sooty-mold-infected seed heads. In crops with high levels of sooty mold, combines may be dirty and dusty and covered with released spores, which can be an indicator of high levels of sooty mold.<\/p>\n\n\n\n

Management<\/strong><\/h3>\n\n\n\n

Proper crop nutrition and pest control, combined with proper harvest timing, will keep sooty mold at a minimum.<\/p>\n\n\n\n

Thanks to reviewer David Fuller, Extension Professional<\/i><\/p>\n\n\n\n

\n\n\n\n

Information in this publication is provided purely for educational purposes. No responsibility is assumed for any problems associated with the use of products or services mentioned. No endorsement of products or companies is intended, nor is criticism of unnamed products or companies implied.<\/em><\/p>\n\n\n\n

\u00a9 2014, 2020<\/p>\n\n\n\n

Call 800.287.0274 (in Maine), or 207.581.3188, for information on publications and program offerings from University of Maine Cooperative Extension, or visit extension.umaine.edu<\/a>.<\/strong><\/p>\n\n\n\n

The University of Maine System (the System) is an equal opportunity institution committed to fostering a nondiscriminatory environment and complying with all applicable nondiscrimination laws. Consistent with State and Federal law, the System does not discriminate on the basis of race, color, religion, sex, sexual orientation, transgender status, gender, gender identity or expression, ethnicity, national origin, citizenship status, familial status, ancestry, age, disability (physical or mental), genetic information, pregnancy, or veteran or military status in any aspect of its education, programs and activities, and employment. The System provides reasonable accommodations to qualified individuals with disabilities upon request. If you believe you have experienced discrimination or harassment, you are encouraged to contact the System Office of Equal Opportunity and Title IX Services at 5713 Chadbourne Hall, Room 412, Orono, ME 04469-5713, by calling 207.581.1226, or via TTY at 711 (Maine Relay System). For more information about Title IX or to file a complaint, please contact the UMS Title IX Coordinator at www.maine.edu\/title-ix\/<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Bulletin #1020, Sooty Mold of Barley and Other Small Grains (PDF) By Steven B. Johnson, Extension crops specialist, University of Maine Cooperative Extension For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more of our publications and books at extension.umaine.edu\/publications\/. 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