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The importance of preventing and controlling diseases in MayThe importance of preventing and controlling diseases in May

May 23, 2018

2 Min Read

by Layne Wade, Technical Sales Support, Arysta LifeScience

Heading into the summer season, the month of May is a critical time to begin prevention measures for disease pressures. Taking control early in the season can help prevent the establishment of diseases such as Botrytis bunch rot or Powdery mildew.

High-humidity conditions, paired with elevated nitrogen levels and cluster compactness, can promote a Botrytis outbreak. Grapes in condensed clusters can crack due to pressure, creating ideal entry points for fungus as well as a moist habitat for the spores to germinate.

Along with Botrytis, Powdery mildew thrives in similar high-humidity and cool spring climates. The fungal infection settles on the surface of plant tissue and occupies the top layers of epidermis cells. Invasion of this disease can cause substantial damage to plant growth, crop yield and fruit quality.

The disease requires season-long maintenance because of early season inoculum and secondary infection caused by fungal spores that can infect, develop new spores and re-infect throughout summer months. Secondary infection cycles can occur approximately every five to 30 days, depending on the weather.

Careful and proactive control not only helps prevent these damaging diseases but also reduces the risk of epidemics later. Arysta LifeScience brings a portfolio of preventative and curative protection.

  • PH-D®Fungicide is a strong choice for prevention of Bunch rot caused by Botrytis and other secondary rot-forming fungi such as Cladosporium. PH-D is a FRAC group 19 fungicide and features a unique mode of action (MOA), making it an ideal addition to a rotational management program to aid in resistance management. It works by preventing cell wall construction via chitin inhibition by enzyme interference. This MOA makes PH-D especially important in rotation when multiple applications are required against Botrytis. PH-D also provides excellent knockdown of Powdery mildew.

  • ELEVATE® Fungicide provides the protection that growers need against Botrytis bunch rot throughout the growing season. Because it is a member of the FRAC group 17 fungicide class, ELEVATE is an ideal tank-mix partner because it helps ensure effective disease control while helping preserve grape growers’ fungicide options for the future.

  • VITICURE®Fungicide helps break the infection cycle. It serves as an active protectant on grapes as well as an eradicant by preventing Powdery mildew symptoms after infection has occurred. VITICURE also enhances the activity of registered fungicides used for the control of Botrytis bunch rot. For example, it makes an excellent rotational or tank-mix partner with ELEVATE or PH-D for grape Powdery mildew programs.

To learn more about the Arysta LifeScience portfolio of crop protection products, contact your crop protection retailer, visit www.arysta-na.com or call 886-761-9397.

Always read and follow label directions. ELEVATE, PH-D and VITICURE are registered trademarks of an Arysta LifeScience Group Company. Arysta LifeScience and the Arysta LifeScience logo are registered trademarks of Arysta LifeScience Corporation. © 2018 Arysta LifeScience Group Company. SPC-17108

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