Want to keep up with the latest news for superintendents? Check back every Friday for a quick recap of recent happenings in the golf course maintenance and management industry.

Indemnify® Now Registered in California
Bayer Environmental Science announced that Indemnify® is now registered in California. Indemnify delivers control of nematodes in turf while improving root health and offers improved application flexibility and can be used on both warm- and cool-season turf in all areas of the golf course. The active ingredient in Indemnify, fluopyram, offers strong curative and preventative nematode control to help improve root formation. In as little as one application, Indemnify controls nematodes on contact and continues to work throughout the root zone to offer visible, long-lasting improvement in turfgrass quality for up to six months. Effective on Sting, Root Knot, Anguina pacificae, and many other species of nematodes, Indemnify is optimized for flexible application anytime nematodes are active, providing turf managers with a valuable solution for nematode management. Indemnify also offers a highly concentrated active ingredient and unique formulation specifically designed to penetrate the soil profile wherever nematodes are present.

John Deere Golf and OnLink Collaborate on Fleet Management Software
John Deere Golf and industry leading golf course performance optimization software company, OnLink (formerly OnGolf USA), introduce OnEquip. With OnEquip, golf courses can now integrate equipment fleet data into OnLink’s performance optimization platform for a comprehensive picture of course performance. The new OnEquip component of OnLink allows golf course operators to manage and gather data on their equipment fleet, including maintenance scheduling, parts management, and uptime/downtime reports.  Consistent with the overall OnLink platform, the OnEquip program works with all equipment manufacturers and vendor suppliers.

Tripp Davis and Associates Prepares for Soft Opening of San Antonio’s Historic Oak Hills Country Club
Oak Hills Country Club in San Antonio is preparing for a soft opening of the Tripp Davis renovation/restoration project which has been in the works for the past two years. The official re-opening will take place in Spring 2018. Originally designed by the legendary A.W. Tillinghast in 1922, Oak Hills has hosted 34 PGA TOUR and USGA championships over the years, including the 1960 and 1961 Texas Opens won by Arnold Palmer.

Bayer Green Solutions Team Helps You Prevent Fungicide Resistance
Written by Zac Reicher and Rob Golembiewski
Fungicide resistance occurs when a fungicide that was once effective for a specific disease no longer provides control. Preventing or delaying resistance should be a primary concern for all turf managers because fungicide resistance will limit their choices of fungicides that can be used, can increase costs, and ultimately impact their disease management program. The causes behind resistance are thoroughly discussed in the linked article by Dr. Rick Latin of Purdue University. Below are some practical aspects for reducing the chance of developing fungicide resistance. 

  • Only a few diseases are likely to develop resistance:
    • Pathogens that reproduce prolifically, have a short life cycle, and have extended periods of favorable conditions for disease development
    • Diseases that require numerous fungicide applications throughout the season
    • Cool-season diseases that fit these characteristics are dollar spot, anthracnose, gray leaf spot, and Pythium plus Microdochium patch in the Pacific Northwest
    • These five diseases are the most important to manage wisely to limit the chances of resistance
  • Minimize inoculum levels: 
    • This is a numbers game where the larger the inoculum level, the better the chances of a genetic alteration allowing resistance to develop
    • Using only curative applications or long intervals between preventative applications  allows tremendous build-up of inoculum
    • Make preventative applications for the five primary diseases most likely to develop resistance
    • Apply fungicides at the appropriate rate and application interval to keep inoculum levels low
    • Increase the frequency of applications and/or rates during high disease pressure
  • Reduce the selection pressure:
    • Maximize cultural practices to limit disease pressure – dew management, air movement, regular mowing, rolling, etc.
    • Maximize application technique to improve control – increasing spray volume and decreasing droplet size will improve control of most fungicides
    • Avoid repeated use of fungicides with the same mode of action (FRAC code)
    • Alternate between fungicides with different modes of action (FRAC codes), not just different brand names
    • Include multi-site contact fungicides in tank-mixes as often as practical
  • Additional considerations: 
    • Though some avoid summer applications of DMI fungicides for fear of growth regulation, both Tartan® Stressgard® and Mirage® Stressgard are DMI’s with excellent summer turf safety and provide an additional mode of action for rotation
    • There are seven SDHI’s currently available in turf, so do not overuse this class
    • Limit the number of applications for a specific mode of action/FRAC code for a targeted disease to 3-4 per year