V-8, Penn A-1 and Luminary. DLFPS-AP/3058 and Piranha were consistent performers among almost all of the fifteen sites. Pure Eclipse and L-93XD delivered top turf quality at several sites but fell off at other sites. For instance, L-93XD was excellent at several sites including Lexington, KY, Logan, UT, and St. Paul, MN, but like 2017, finished near the bottom of entries at Athens, GA, and Stillwater, OK. In some cases, entries were superior to a standard entry such as Declaration or Luminary at a particular location, but not another location. Tis trial was also evaluated at Los Angeles
Te 2015 NTEP Cool-Season low input trial at Corvallis, OR.
many entries including Beudin, Beacon, PST-4RUE and Gladiator showing little or no disease at either location. Pink snow mold (Microdochium nivale) was rated at West Lafayette, IN, with Bolster, RAD-FC44, DLFPS- FRC/3057, BAR 6FR 126 and Sword showing the best tolerance.
Dollar spot and brown patch can be persistent and
troublesome diseases on fineleaf fescues, and both of these diseases were noted and rated in 2018. Dollar spot was evaluated at three locations with somewhat varying results. Gladiator showed good dollar spot tolerance at Adelphia, NJ, and East Lansing, MI, but showed less tolerance at West Lafayette, IN. Resolute followed a similar trend in not performing as well at West Lafayette as the other two sites. DLFPS-FRC/3060 was the best entry for dollar spot at West Lafayette but showed middling tolerance at Adelphia, NJ. Brown patch was rated in 2017 at Raleigh, NC,
and the hard fescues Gladiator, Beacon, Beudin and Minimus demonstrated the best tolerance. Data from 2018 showed different results as DLF-FRR 6162, a strong creeping red fescue with the best tolerance, while several of the hard fescues had more brown patch damage. And as mentioned above, summer patch damage at Amherst, MA, from the newly recognized M. meyeri-festucae strain showed all entries as moderately to highly susceptible.
Bentgrass New trials of bentgrass were established in fall
2014, and the first data was released in spring 2016. Two species are included in the latest trials: creeping (Agrostis stolonifera) and colonial (Agrostis tenius). Fourth year data (from 2018) is presented here, with the final year of data and a summary report available in 2020.
Putting Green Trial Tis trial, containing twenty creeping bentgrasses,
was established at nineteen locations. Turfgrass quality ratings collected in 2018, like previous years, revealed several experimental cultivars that can meet, or exceed the quality delivered by previous top performers Declaration,
TPI Turf News July/August 2019
Country Club in California for a final year before preparations for the 2023 U.S. Open begin in earnest. Piranha, Shark, DLFPS-AP/3056 and Pure Eclipse were top performers, with Luminary, L-93XD, Tour Pro and DLFPS-AP/3018 rounding out the top turf quality statistical group. Wear tolerance evaluations were conducted at the
Amherst, MA, location, starting in 2015 and continuing in 2018. Tis location imposes wear by dragging a stiff brush across the plots. Tis action causes bruising and abrasions that mimic different types of damage. Pure Eclipse, DLFPS-AP/3018, Piranha and 777 showed the best overall quality, finishing in the top statistical group. Top wear tolerance ratings were noted for Pure Eclipse and Piranha in three ratings. Disease resistance has always been an important
feature of any new bentgrass cultivar. Dollar spot is one of the most damaging diseases on bentgrass and again in 2018, dollar spot was noted and rated at multiple locations. L-93XD, Declaration, DLFPS-AP/3018, DLFPS-AP/3058, Luminary, Tour Pro and Barracuda had consistently high dollar spot ratings across locations. Anthracnose was rated at Raleigh, NC, with DLFPS- AP/3018, DLFPS-AP/3058, Luminary, Piranha and DLFPS-AP/3059 showing the highest ratings.
Fairway/Tee Trial Te 2014 trial consists of fourteen creeping and
three colonial bentgrass entries and is planted at nineteen locations. Tirteen locations submitted data for 2018, the fourth year of the trial. Tis trial has shown less entry differences than
past trials, with very little to no statistical differences in turf quality averages noted at four locations. Greater entry separation was noted at the remaining six locations with only creeping bentgrasses V-8 and 007 in the top statistical grouping at all sites. New entries, as well as Piranha, Chinook and L-93XD also looked impressive at several locations in 2018. Ancillary locations were established for traffic,
reduced irrigation and other parameters. In 2018, data was collected from the Fargo, ND, location managed under reduced irrigation, where very good entry separation showed only Shark and Penncross in the top statistical turf quality group.
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