![]() The best products against Pythium root rot in North Carolina are those with the active ingredients mefenoxam (Subdue Maxx), etridiazole (Terrazole, Truban), fenamidone (greenhouse only) (FenStop), fluopicolide (Adorn), or cyazofamid (Segway O). The efficacy of fungicides against Pythium is variable, depending on the species of Pythium and the host plant involved. It’s important to keep in mind that fungicides will not cure established infections. Be sure to follow all label indications and rotate among products with different modes of action (different FRAC groups). Try any new product on a small scale first, to be sure you don’t cause damage to the crop. The following steps may be helpful in preventing losses to Pythium root rot.ġ) Be sure that no soil is coming in contact with plants or potting mixes.Ģ) Carefully inspect all liners for disease and pest problems.ģ) Avoid excess irrigation and excess fertilization.Ĥ) Verify the functioning of the the water sanitation system periodically.ĥ) Consider preventive fungicide applications. ![]() Pythium moving into the lower stem of a young mum. Spread of Pythium can occur through contaminated equipment, splashing of water, infected potting media, infected liners, etc. On occasion, Pythium will cause a full-blown stem and foliage blight in mums. From the roots, Pythium can move up into the stem and cause reddening of the woody tissue at the base, lower stem rot, or even vascular streaking that could be confused for Fusarium wilt. Leaves do not develop spots or turn yellow unless other problems are also present. Above ground, the foliage wilts as a result of loss of root function. Roots turn brown and the exterior portion can slough off leaving only the central vascular bundle (“rat tailing”). The usual point of attack in mums is the root system. Pythium species are fungus-like “water molds” that can infect a wide range of herbaceous plants. If you have not been taking steps to prevent losses to this disease, there may still be time to forestall some losses. July is the month when mum producers start seeing wilting plants due to Pythium root rot, with more cases turning up in August and September. Please note that some applications and/or services may not function as expected when translated. NC State Extension does not guarantee the accuracy of the translated text. As with any Internet translation, the conversion is not context-sensitive and may not translate the text to its original meaning. To the extent there is any conflict between the English text and the translation, English controls.Ĭlicking on the translation link activates a free translation service to convert the page to Spanish. Por favor, tenga en cuenta que algunas aplicaciones y/o servicios pueden no funcionar como se espera cuando se traducen.Įnglish is the controlling language of this page. NC State Extension no garantiza la exactitud del texto traducido. ![]() Al igual que con cualquier traducción por Internet, la conversión no es sensible al contexto y puede que no traduzca el texto en su significado original. En la medida en que haya algún conflicto entre la traducción al inglés y la traducción, el inglés prevalece.Īl hacer clic en el enlace de traducción se activa un servicio de traducción gratuito para convertir la página al español. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |