Q: What is the most damaging insect turfgrass pest?? A: Hyperodes Weevils

With apologies to Debbie Downer of 1990's Saturday Night Live fame for this week's negative newsletter....

I have been extremely fortunate that I have been involved in golf course maintenance for a long time. To illustrate, the first golf course I worked at hosted a major tournament (The PGA) that was won by Jack Nicklaus...way back in 1980!! Since then, I received world class education from Penn State University and have worked at three other clubs including Potowomut. During this time, I have seen golf course conditioning levels rise dramatically. Also rising are the number and ferocity of turf damaging turfgrass diseases and insects.

Way back in 1980 hyperodes weevils were not a concern of turf managers in the Northeast. Zero threat to turf, and zero dollars spent for annual control. Regionally they became problematic near New York City during the 1990's and have since spread quickly throughout the East. At Potowomut in 2013, they pose the largest threat of any insect pest to greens, tees and fairway turf. Hyperodes damage comes from the larval (small grub) stage from June through September. The extremely small grubs (1 to 4 mm) feast on irrigated golf turf. They can devour turfgrass roots quickly and turn a perfect fairway, green or tee to an unplayable one in days. Also to complicate matters, they hatch up to four generations during a golf season which means multiple control strategies are needed to limit damage throughout the season.

Last week we applied an insecticide that controls egg laying adults (insects) while they walk from their winter hideouts in forested areas to yummy turfgrass. Within the next ten days, we will treat the larval stage (grubs) soon after eggs hatch. Depending on control success, we may have to repeat the entire expensive control process in later June and July for later generations.

Pests to both plants and human health are always adapting to survive the environments (and control methods) presented to them, especially ones created by man. Because of these pressures, human and plant pathologists and entomologists are always searching to create new ways to keep them off balance. Based on the dollars we spend to battle a relatively new golf course pest, I am not convinced man is winning the war.

We also have news of another insect pest will soon invade our small corner of the world. Crane flies have moved east from Cleveland to Buffalo and Rochester and within two or three years we will be devising control strategies for those nasty buggers. Oh Joy!!

Tidbits.....Aerating greens with solid tines this week. All greens will be done three times to open soils up so they may breathe. A light topdressing will follow....All sprinkler heads are being edged this week....Broadleaf weed control continues....Poa annua seedhead control program has worked perfectly this year on greens....Similar chemical was applied experimentally to fairways 8,9 and 14 to suppress growth causing discoloration that will grow out soon....Have pumped 1.87 million gallons to date, 1 million less than 2012 to date....

Once again, apologies for today's negative report. However, as many of you know I like to share with you different facets of the golf course maintenance industry that still perplex and teach me even after all these years.

Patrick M. Gertner CGCS