Solutions for Diseases Root-infecting Pathogens
There has been a significant amount research in recent years to better understand the ecology of root-infecting pathogens and the diseases they incite. Notably our understanding of pathogenic nematodes, Pythium root diseases, and ectotrophic root-infecting fungi (such as take-all root rot, summer patch, and spring dead spot) has improved dramatically. This research has led to breakthrough discoveries that have improved our recommended management strategies. We have learned that preventive fungicide applications can be highly effective when made just as the target organism becomes active, which is usually weeks to months ahead of when visual symptoms occur. Not surprisingly, we also understand that these pathogens are opportunistic and tend to be most problematic when the turf is already compromised by other stresses such as traffic, soil conditions, shade, etc. Lastly, disease diagnostic labs usually identify the presence of multiple pathogens in turf samples with root decline, indicating the complexity within the root environment. When dealing with a root pathogen at any given time, it is critical to implement a comprehensive management plan, including cultural practices and fungicide applications targeting primary and secondary root pathogens that may be compromising the turf throughout the season.
Fairy Ring
Timing for fairy ring prevention is based on university research and begins in the spring when soil temperatures taken at 11:00 am at a 2” depth averages 55-60ºF for five consecutive days. These applications should be watered-in with 0.125-0.25”. The Envu program below has a satisfaction guarantee and if your expectations are not met, please contact your Envu Distributor or Envu Area Sales Manager.
Product and Use Rate per 1,000 sq. ft.
Application
Good
Better
Best
California
Ideal for fairways
Ideal for fairways or greens
Ideal for greens
Ideal for fairways or greens
1 st app. (55-60°F soil temp)
Tartan ® Stressgard ® 2 fl. oz.
Tartan Stressgard 2 fl. oz.
Tartan Stressgard 2 fl. oz.
Tartan Stressgard 2 fl. oz.
2 nd app. (28 days later)
Mirage ® Stressgard 1 fl. oz.
Densicor ® 0.196 fl. oz.
Resilia™ 4 fl. oz.
Mirage Stressgard 1 fl. oz.
Castlon™ 0.36 fl. oz. +/- Mirage Stressgard 1.0 fl. oz.
Castlon 0.36 fl. oz. +/- Mirage Stressgard 1.0 fl. oz.
3 rd app. (28 days later)
Tartan Stressgard 2 fl. oz.
Tartan Stressgard 2 fl. oz.
Fairy ring is best-controlled in spring at soil temperatures of 55-60°F to prevent late spring - summer symptoms like these. (Envu)
Fairy ring usually forms a hydrophobic layer, causing localized dry spots and indirectly damaging turfgass. (Envu)
5
July, 2024
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