Putting Green Trial Tis trial, containing twenty creeping bentgrasses,
was established at nineteen locations. Turfgrass quality ratings collected in 2016 revealed several experimental cultivars that can meet, or exceed the quality delivered by previous top performers Declaration, V-8, Penn A-1 and Luminary. For instance, PST-ROPS delivered top turf quality at several sites, including sites as varied as Athens, GA, West Lafayette, IN and East Lansing, MI. Piranha showed broad adaptability finishing in the top statistical grouping for turf quality at eleven of eighteen locations. Additionally, Kingdom and PST-ROPS were the only entries in the top statistical group for turf quality under both regular irrigation and reduced irrigation regimes at the Logan, UT location. Tis trial was also evaluated at three golf course
sites: Los Angeles Country Club in California, the California Golf Club of San Francisco and North Shore Country Club in Glenview, IL. In 2016, 777, PST- ROPS and DLFPS-AP/3018 finished in the top turf quality grouping at all three locations. Interestingly, L-93XD showed excellent performance at both of the California sites, but finished at the bottom of all entries at the Chicago site. In addition, Kingdom was a top performing entry at the San Francisco site, a middle of the pack entry at L.A. Country Club, and the lowest performing entry at North Shore in Chicago. Tese results are evidence that entries performing well at one
site cannot be assumed to perform well at sites in different geographical areas and/or climatic zones. As with the previous trial, wear tolerance evaluations
were conducted at the Amherst, MA location, starting in 2015. Tis location imposes wear by dragging a stiff brush across the plots. Tis action causes bruising and abrasions that mimic different types of damage. In 2016, GDE, Kingdom, 777, DLFPS-AP/3018 and PST-ROPS showed the best overall quality, with Kingdom and Nightlife exhibiting excellent wear tolerance in three ratings. An additional ancillary trial was established
at Logan, UT where entries were managed both under traditional irrigation and a reduced irrigation regime. Te entries ending in the top statistical turf quality group under both regimes in 2016 include only Kingdom and PST-ROPS. Bentgrasses are susceptible to many diseases,
therefore, 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 in 2016, dollar spot was noted and rated at eight locations. L-93XD, Declaration, DLFPS-AP/3018, DLFPS-AP/3058, Luminary, GDE and Barracuda had consistently high dollar spot ratings across locations. Brown patch was rated at three locations with Piranha, Luminary and PST-ROPS showing good results. Pink snow mold (Microdochium nivale) data collected at the California Club in San Francisco revealed some good entry separation with 777 finishing atop the pink snow mold tolerance ratings.
Fairway/Tee Trial Te 2014 trial consists of
fourteen creeping and three colonial bentgrass entries and is planted at nineteen locations. Second year data usually shows a broader response to various diseases and gives us a first look at each entry’s response to stresses imposed in our ancillary trials. At several locations, entry
Seeda-Vator TPI Turf News July/August 2017
Versatility of one machine with 5 interchangeable shafts and seed box attachment for multiple jobs.
differences were less than expected, with no statistical differences in turf quality averages noted at a few trial locations. Tere were however, entries with outstanding turf performance and disease tolerance in 2016. Past top creeping bents 007 and Crystal Blue Links are the entries that any new experimental needs to outperform, and new entries Piranha, Chinook and L-93XD, along with commercial cultivars Barracuda, Shark, Nightlife, Kingdom and Armor looked impressive at several locations in 2016.
41
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76