Managing tough summer stress diseases
By Lisa Beirn, Ph.D., technical services manager for SyngentaSummer biotic stresses
| Protection from abiotic stressors
| Summer abiotic stresses
Turfgrasses are susceptible to many types of stress, and in the summer, they can be adversely affected by both biotic and abiotic stresses.
Agronomic programs from Syngenta
- Biotic stresses are caused by living organisms such as plant pathogens, insects or nematodes
- Biotic stress will depend on geography, the environment and the susceptibility of the host plants.
- Abiotic stresses can be synthesized or occur naturally
- Common causes include: Ongoing wear from golfers, regular maintenance, drought and high temperatures
are tailored by region and turf species based on local conditions. Using our research and experience, Syngenta has developed rotations and tank-mixtures that deliver outstanding turf quality and playability by managing these biotic and abiotic stresses.
Summer biotic stresses (plant pathogens) There are four key diseases that impact summer stress on greens
(in the transition zone and the North). To help you select a fungicide based on a target disease, see our recommendations below or visit our efficacy ratings chart
on our disease ID guide
for efficacy on additional diseases.
- Anthracnose: Daconil® Action™, Appear® II, Ascernity®, Velista® and Briskway® fungicides.
- Dollar Spot: Choose Daconil Action, Ascernity, Briskway, Posterity® XT, Posterity Forte and Secure® Action fungicides.
- Summer Patch: Choose Heritage® Action™ fungicide, Briskway, Posterity XT and Velista.
- Brown Patch: Choose Heritage Action, Ascernity, Posterity XT, Velista, Secure Action and Briskway.
For optimal disease control, especially for diseases like anthracnose, it is recommended to tank-mix a contact fungicide with a systemic fungicide.
Protection from abiotic stressors with the Syngenta portfolio Syngenta offers a range of products that help boost a plant’s natural defenses against abiotic stress.
Summer abiotic stress (drought and high temperature)
The Syngenta agronomic programs
are proven and safe to turf when applied during summer.
Heritage Action, Daconil Action and Secure Action improve plant performance by affecting multiple physiological processes within turfgrass. For example, they manage stomatal regulation, which reduces water loss. They also activate the plant’s own defense genes to better respond to stress.
Briskway is a DMI-containing fungicide that is safe for turfgrass in extreme temperatures.
Appear II controls diseases like Pythium and anthracnose, while enhancing color, turf quality and stress tolerance.
To combat summer stress, Syngenta offers products packaged in convenient Multipaks. From left: the Daconil Action + Heritage Action Multipak, Daconil Action + Appear II Multipak and Heritage Action + Velista Multipak. Poa annua putting green turf quality
Source: B. Huang, Rutgers University, 2020. Treatments applied on June 23, July 7, July 21, Aug. 4 and Aug. 18, 2020. Daconil® Action™ fungicide applied at the label rate of 3.5 fl. oz.; Appear® II fungicide applied at the label rate of 6.0 fl. oz.; Primo Maxx® plant growth regulator applied at the label rate of 0.1 fl. oz.
For more information on the agronomic programs recommended for your region, view the following Syngenta-sponsored GCSAA webinar, Agronomic Programs: Managing Plant Stress and Disease Management.
All photos and videos are either the property of Syngenta or are used with permission.
Performance assessments are based upon results or analysis of public information, field observations and/or internal Syngenta evaluations. Trials reflect treatment rates and mixing partners commonly recommended in the marketplace.
© 2023 Syngenta. Important: Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties and/or may have state-specific use requirements. Please check with your local extension service to ensure registration and proper use. Action™, Appear®, Ascernity®, Briskway®, Daconil®, Heritage®, Posterity®, Primo Maxx®, Velista®, the Alliance Frame, the Purpose Icon and the Syngenta logo are trademarks of a Syngenta Group Company. Secure® is a registered trademark of Ishihara Sangyo Kaisha, LTD. All other trademarks used herein are the property of their respective third-party owners.