Talking Turf

  • Jul18Tue

    Get With the Program

    Dissecting Bayer’s Summer Disease Program Recommendations July 18, 2017 Paul Giordano, Ph.D.
    In the last 18 months, Bayer has launched three new fungicide solutions to help Canadian Superintendents battle tough diseases on their golf courses. Not only do these fungicides include the latest active ingredients and formulation technology from Bayer, they have allowed us to offer a full line of products that work wonderfully together in a programmatic disease control approach throughout the season.

    Whether you follow a calendar-based schedule, monitor and scout your golf course for disease outbreaks, or utilize prediction models to guide your fungicide applications, we have taken steps to incorporate information from all of these strategies into the Bayer Plant Protection Calendar. The idea is to help superintendents in the humid, temperate regions of Canada utilize the best Bayer product for the various disease issues they face on an annual basis.

    The greens program is set up as a 14-day application interval, with a primary focus on bolstering plant health and stress mitigation in the mid-summer months. The below screenshot captures the core summer stress period, (July – August) with Signature Stressgard as the backbone for disease management and plant health improvement.

    Along with outstanding disease control on Pythium spp. and anthracnose, Signature Stressgard offers unique plant health benefits such as improved photosynthetic efficiency, increased turf vigour and improved root mass when used in a program, especially when combined with other Stressgard Forumlation Technology fungicides.

    Along with outstanding disease control on Pythium spp. and anthracnose, Signature Stressgard offers unique plant health benefits such as improved photosynthetic efficiency, increased turf vigour and improved root mass when used in a program, especially when combined with other Stressgard Forumlation Technology fungicides. 


    Although every golf course is different, and disease issues vary from property to property, this blueprint lays out the diseases that are typically active at the time, as well as the products available in Bayer’s portfolio that give you the best broad-spectrum control with proper rotation and stewardship in mind.

    For fairways, the object is to get the MOST out of your fungicide program. Longevity is crucial when dealing with broad acreage applications. Fortunately, Bayer’s products have proven themselves on a global scale when it comes to research results at University trials, as well as Canadian-based disease trials aimed at providing the 3-4 week control Superintendents are looking for.

    Interface Stressgard at 120 mL/100 m2, (right) providing excellent 21-day control of dollar spot under extreme disease pressure compared to the untreated control (left) in a putting green trial at Michigan State University in 2015. Exteris Stressgard at 200 mL/100 m2, controlling dollar spot on a 28-day schedule on a fairway trial at Rutgers University in 2016.


    Given the recent heavy rains, saturated soils, and high humidex, dollar spot has been extremely active and highly aggressive. Most fungicides break down rapidly when temps are high and rainfall is persistent. Getting 28+ days out of anything has proven very difficult this year, especially if applications are being done curatively, after disease is present. Looking at the 21-day fairway program on the Bayer Plant Protection Calendar (screenshot below), you’ll see we are currently in a very important stage of disease control. A time of the year when just about anything can happen; dollar spot will likely continue to explode given the environmental conditions, but don’t be surprised to see brown patch develop as temperatures climb, and anthracnose starts to take hold on already stressed poa annua plants that have already been teetering on the edge this summer.

    Interface Stressgard is the go-to product for the mid-summer disease deluge. Its multi-a.i. formulation with Stressgard Technology packs a powerful one, two punch against the numerous foliar diseases your turf will face and offers superior turfgrass quality and stress tolerance. As a non-DMI product, Interface Stressgard can be used confidently without the risk of excess plant regulation or phytoxicity, and fits well into a rotational program with SDHI and DMI chemistries throughout the year. Look to Interface Stressgard as the "sleep easy" application in mid-July and let the Bayer Stressgard program help you. "Take Back Your Saturdays!"


    Interface Stressgard is the focus of summer disease management on fairways and tees. Long-lasting, broad-spectrum dollar spot control with best-in-class turf quality makes for a great staple in the Bayer Stressgard program throughout the year.