Algae Management on Putting Greens

John Kaminski, Ph.D.

Algae infestation on closely mown putting greens continues to be difficult to manage. While applications of various fungicides, such as chlorothalonil and mancozeb, have been shown to suppress algae, these products must be applied on relatively short intervals prior to the appearance of symptoms, and their efficacy varies. Further complicating the use of fungicides is the exclusion of chlorothalonil in individual regions of the U.S. In areas where chlorothalonil use remains legal, new label restrictions on the total amount of product that can be applied and increased time between application intervals may drastically limit the ability to control algae over the course of an entire season.

In this webcast, John Kaminski, Ph.D., presents recent work that has shown algae suppression is possible with alternative strategies involving the application of phosphites products, selection of proper nitrogen sources, and potentially through the use of wetting agents. Kaminiski also addresses the current literature and discuss some of the recent findings of the GCSAA-funded algae management study.

Original presentation date: Nov. 9, 2011

About the instructor

John E. Kaminski, Ph.D., is an assistant professor of turfgrass science at Pennsylvania State University. His research focuses on optimization of chemical and cultural management strategies for turfgrass diseases and weeds. Kaminski also serves as the director of the golf course management program (two-year program) at Penn State. He earned his bachelor of science degree in turfgrass management at Penn State, and then went back to his home state, Maryland, where he earned his master of science degree and his doctorate from the University of Maryland.


Member price: Free
Non-member price: $60
Chapter price: $100
Education points: 0.2

Register now »

Three ways to register:

  • Online: Click "Register now" and follow prompts. Be sure to check the "session for education points" if points are desired.
  • By fax: Return the faxback form »
  • By phone: Contact GCSAA at 800-472-7878

Once you've registered, access information will be e-mailed to you.

Members: mLearning

Recent webcasts are available in a mobile format compatible with most devices. GCSAA members can search the mLearning listings and get started immediately.

Education points

To receive education points, you must submit an evaluation survey after completing this webcast. Points are added to your transcript within 3 to 5 business days after submission.

Submit an evaluation survey

A free member benefit brought to you
in partnership with Syngenta

Syngenta logo