TABLE 23. MEAN TURFGRASS QUALITY AND OTHER RATINGS OF KENTUCKY BLUEGRASS CULTIVARS IN THE 2017 NATIONAL KENTUCKY BLUEGRASS TEST GROWN UNDER TRAFFIC STRESS AT BLACKSBURG, VA 1/ 2020 DATA TURFGRASS QUALITY AND OTHER RATINGS 1-9; 9=BEST 2/ QUALITY RATINGS QUALITY %GREEN COV %BARE QUALITY %GREEN COV %BARE QUALITY %GREEN COV %BARE QUALITY NAME MAY JUN JUL AUG MEAN PRE-TRAF PRE-TRAF PRE-TRAF MID-TRAFF POST TRAF POST TRAF POST TRAF 2 WEEKS POST TRAFFIC STARR (GO-2628) 7.3 9.0 8.7 7.7 8.1 7.7 83.3 16.7 5.0 83.3 16.7 8.3 88.3 11.7 9.0 A11-26 7.3 9.0 5.7 6.3 7.1 6.3 83.3 16.7 5.3 83.3 16.7 8.3 88.0 11.7 8.7 PPG-KB 1304 7.0 9.0 9.0 8.0 8.4 8.0 93.0 6.7 4.7 93.0 6.7 9.0 91.3 8.3 8.7 SKYE 7.7 8.7 6.3 7.3 7.5 7.3 89.7 10.0 4.3 89.7 10.0 8.7 88.3 11.7 8.7 BARSERATI (BAR PP 110358) 7.3 9.0 7.7 6.3 7.5 6.3 86.7 13.3 6.0 86.7 13.3 8.7 85.0 15.0 8.3 BARVETTE HGT? 7.0 8.7 5.7 8.3 7.7 8.3 96.0 3.3 5.0 96.0 3.3 9.0 89.3 10.0 8.3 BOMBAY (GO-22B23) 7.3 9.0 7.0 8.0 7.9 8.0 76.7 23.3 5.0 76.7 23.3 7.7 88.3 11.7 8.3 DLFPS-340/3455 7.3 8.7 8.3 7.3 7.7 7.3 73.3 26.7 4.0 73.3 26.7 7.3 80.0 20.0 8.3 SHAMROCK 7.7 8.3 7.3 6.3 7.2 6.3 73.3 26.7 5.3 66.7 33.3 6.7 83.3 16.7 8.3 SYRAH (LTP-11-41) 7.0 8.3 7.0 6.3 6.9 6.3 86.7 13.3 5.0 86.7 13.3 8.7 85.0 15.0 8.3 A13-1 8.3 8.7 5.0 5.3 6.6 5.3 70.0 30.0 5.0 76.7 23.3 7.7 78.3 21.7 8.0 A15-6 7.3 9.0 5.7 5.3 6.9 5.3 71.7 28.3 4.0 70.0 30.0 7.0 81.7 18.3 8.0 A16-1 7.3 8.3 7.7 6.0 6.9 6.0 80.0 20.0 4.7 73.3 26.7 7.3 80.0 20.0 8.0 BAR PP 79366 6.3 7.3 3.3 4.0 5.2 4.0 58.3 41.7 5.0 43.3 56.7 4.3 78.3 21.7 8.0 A16-2 7.3 8.7 6.3 6.3 7.2 6.3 83.3 16.7 4.3 73.3 26.7 7.3 84.7 15.0 7.7 AKB3128 8.3 8.0 5.7 5.0 6.7 5.0 70.0 30.0 5.0 66.7 33.3 6.7 75.0 25.0 7.7 BAR PP 79494 7.0 8.3 6.3 5.0 6.6 5.0 65.0 35.0 5.3 53.3 46.7 5.3 76.7 23.3 7.7 BLUE GEM (NAI-13-9) 7.7 8.7 5.7 4.3 6.1 4.3 66.7 33.3 5.0 66.7 33.3 6.7 78.3 21.7 7.7 J-1138 8.0 9.0 6.0 6.3 7.1 6.3 66.7 33.3 5.7 70.0 30.0 7.0 81.7 18.3 7.7 RAD-1776 7.7 9.0 8.0 6.7 7.5 6.7 80.0 20.0 5.7 80.0 20.0 8.0 76.7 23.3 7.7 BAR PP 7K426 6.7 8.0 5.7 5.3 6.3 5.3 66.7 33.3 4.7 60.0 40.0 6.0 73.3 26.7 7.3 DLFPS-340/3549 6.7 8.7 6.3 4.3 6.1 4.3 75.0 25.0 5.0 73.3 26.7 7.3 73.3 26.7 7.3 DLFPS-340/3552 7.7 7.7 3.7 4.0 5.5 4.0 66.7 33.3 4.3 66.7 33.3 6.7 75.0 25.0 7.3 KH3492 6.7 8.3 5.7 6.7 7.0 6.7 76.7 23.3 6.0 76.7 23.3 7.7 75.0 25.0 7.3 PPG-KB 1131 6.0 8.3 6.0 5.7 6.5 5.7 73.3 26.7 4.3 73.3 26.7 7.3 79.7 20.0 7.3 TWILIGHT (NAI-13-132) 7.7 8.7 6.3 6.3 7.0 6.3 65.0 35.0 5.0 63.3 36.7 6.3 71.7 28.3 7.3 AKB3179 6.7 7.7 4.0 4.7 5.5 4.7 55.0 45.0 5.7 46.7 53.3 4.7 70.0 30.0 7.0 BABE 7.0 8.3 6.0 5.3 6.3 5.3 71.7 28.3 5.3 70.0 30.0 7.0 70.0 30.0 7.0 BAR PP 7309V 7.0 7.7 5.3 5.3 6.1 5.3 66.7 33.3 5.0 66.7 33.3 6.7 70.0 30.0 7.0 ELECTRIC (PST-K11-118) 7.0 9.0 8.0 6.3 7.1 6.3 66.7 33.3 4.0 70.0 30.0 7.0 71.7 28.3 7.0 KENBLUE 6.7 7.0 7.0 6.0 6.5 6.0 60.0 40.0 5.7 66.7 33.3 6.7 70.0 30.0 7.0 NURUSH (J-3510) 6.7 7.3 4.3 4.3 5.3 4.3 58.3 41.7 4.3 53.3 46.7 5.3 70.0 30.0 7.0 UNITED (NAI-13-14) 7.3 8.3 5.0 5.0 6.0 5.0 63.3 36.7 4.3 66.7 33.3 6.7 68.3 31.7 7.0 A10-280 8.7 8.3 5.0 5.7 6.8 5.7 66.7 33.3 5.0 56.7 63.3 5.7 68.3 31.7 6.7 A16-17 8.0 8.7 7.7 4.0 6.7 4.0 58.3 41.7 5.0 56.7 43.3 5.7 63.3 36.7 6.7 AVIATOR II (NAI-15-84) 7.3 7.7 5.3 5.0 5.9 5.0 53.3 46.7 5.0 36.7 63.3 3.7 65.0 35.0 6.7 MIDNIGHT 7.7 8.7 6.7 6.0 6.6 6.0 56.7 43.3 4.3 43.3 56.7 4.3 63.3 36.7 6.7 ORION (PST-K13-143) 6.7 8.0 6.7 6.3 6.5 6.3 60.0 40.0 4.3 66.7 23.3 6.7 65.0 35.0 6.7 PROSPERITY 6.7 8.0 4.7 4.7 5.9 4.7 71.7 28.3 5.0 63.3 36.7 6.3 66.7 33.3 6.7 SELWAY 7.7 8.0 7.3 4.7 6.3 4.7 71.7 28.3 4.7 63.3 36.7 6.3 65.0 35.0 6.7 A06-8 7.3 8.0 5.7 5.3 6.5 5.3 71.7 28.3 5.3 70.0 30.0 7.0 63.3 36.7 6.3 BAR PP 7236V 7.7 8.3 7.0 6.7 7.3 6.7 68.3 31.7 5.3 63.3 36.7 6.3 66.3 33.3 6.3 DLFPS-340/3550 7.7 8.3 6.0 5.3 6.3 5.3 60.0 40.0 4.3 56.7 43.3 5.7 68.3 31.7 6.3 NAI-15-80 8.0 7.3 4.3 3.3 5.3 3.3 43.3 56.7 4.7 36.7 63.3 3.7 63.3 36.7 6.3 PALOMA (PST-K13-139) 7.3 7.7 6.0 4.3 5.8 4.3 56.7 43.3 5.0 53.3 36.7 5.3 63.3 36.7 6.3 A11-40 7.0 8.3 8.3 7.0 7.5 7.0 66.7 33.3 5.0 56.7 43.3 5.7 60.0 40.0 6.0 A99-2897 8.0 8.0 5.0 4.3 6.5 4.3 66.7 33.3 4.7 76.7 23.3 7.7 60.0 40.0 6.0 BLUE KNIGHT 6.3 6.3 3.3 3.7 4.7 3.7 46.7 53.3 4.7 53.3 46.7 5.3 56.7 43.3 6.0 DLFPS-340/3438 6.3 8.0 5.7 3.7 5.5 3.7 51.7 48.3 4.3 43.3 56.7 4.3 63.0 36.7 6.0 DLFPS-340/3444 6.3 8.3 6.0 5.3 6.3 5.3 63.3 36.7 5.0 53.3 46.7 5.3 58.3 41.7 6.0 TABLE 23. MEAN TURFGRASS QUALITY AND OTHER RATINGS OF KENTUCKY BLUEGRASS CULTIVARS IN THE (CONT'D) 2017 NATIONAL KENTUCKY BLUEGRASS TEST GROWN UNDER TRAFFIC STRESS AT BLACKSBURG, VA 1/ 2020 DATA TURFGRASS QUALITY AND OTHER RATINGS 1-9; 9=BEST 2/ QUALITY RATINGS QUALITY %GREEN COV %BARE QUALITY %GREEN COV %BARE QUALITY %GREEN COV %BARE QUALITY NAME MAY JUN JUL AUG MEAN PRE-TRAF PRE-TRAF PRE-TRAF MID-TRAFF POST TRAF POST TRAF POST TRAF 2 WEEKS POST TRAFFIC FINISH LINE (NAI-14-178) 7.0 8.3 5.3 5.7 6.5 5.7 61.7 38.3 5.3 56.7 43.3 5.7 60.0 40.0 6.0 NAI-14-122 6.7 9.0 6.7 5.3 6.5 5.3 61.7 38.3 5.0 70.0 30.0 7.0 60.0 40.0 6.0 NAI-14-132 6.0 7.3 5.3 3.3 5.1 3.3 43.3 56.7 4.7 50.0 50.0 5.0 60.0 40.0 6.0 NK-1 7.0 7.7 4.3 3.7 5.2 3.7 46.7 53.3 5.0 36.7 63.3 3.7 60.0 40.0 6.0 BLUE DEVIL 7.3 8.3 6.3 5.7 6.5 5.7 58.3 41.7 5.0 60.0 40.0 6.0 61.7 38.3 5.7 DLFPS-340/3500 8.3 8.7 4.0 5.0 6.3 5.0 61.7 38.3 5.7 56.7 36.7 5.7 56.7 43.3 5.7 DLFPS-340/3553 6.7 8.7 7.3 5.3 6.8 5.3 61.7 38.3 4.7 73.3 26.7 7.3 59.7 40.0 5.7 J-1319 7.3 7.7 5.3 4.0 5.6 4.0 46.7 53.3 5.0 33.3 66.7 3.3 56.7 43.3 5.7 MVS-130 6.3 8.7 7.3 5.0 6.3 5.0 56.7 43.3 5.0 50.0 50.0 5.0 56.7 43.3 5.7 PST-11-7 6.7 7.7 5.0 4.7 5.6 4.7 50.0 50.0 4.0 53.3 46.7 5.3 61.7 38.3 5.7 PST-T14-39 5.7 7.7 5.3 4.3 5.2 4.3 51.7 48.3 4.7 46.7 53.3 4.7 56.7 43.3 5.7 AFTER MIDNIGHT 7.7 9.0 6.0 4.7 6.2 4.7 48.3 51.7 4.7 53.3 46.7 5.3 53.3 46.7 5.3 JERSEY (NAI-A16-3) 7.7 9.0 5.3 4.3 6.1 4.3 46.7 53.3 6.0 46.7 53.3 4.7 53.3 46.7 5.3 YELLOWSTONE (A12-7) 7.0 7.7 4.3 4.7 5.9 4.7 53.3 46.7 5.3 56.7 43.3 5.7 53.3 46.7 5.3 A16-7 8.0 7.7 4.3 4.3 5.5 4.3 43.3 56.7 4.7 43.3 56.7 4.3 50.0 50.0 5.0 AMAZE (NAI-14-133) 7.0 8.0 4.7 3.7 5.4 3.7 43.3 56.7 4.3 36.7 63.3 3.7 50.0 50.0 5.0 DLFPS-340/3548 6.3 8.0 6.7 4.0 5.7 4.0 43.3 56.7 5.3 43.3 56.7 4.3 48.3 51.7 5.0 DLFPS-340/3551 8.0 8.7 3.7 3.7 5.6 3.7 45.0 55.0 4.3 43.3 56.7 4.3 50.0 50.0 5.0 PST-K15-167 7.3 7.7 5.0 4.3 5.6 4.3 45.0 55.0 4.7 43.3 56.7 4.3 50.0 50.0 5.0 AKB3241 7.7 7.3 5.3 5.7 6.5 5.7 58.3 41.7 4.3 43.3 56.7 4.3 46.7 53.3 4.7 COMANCHE (NAI-14-176) 8.0 8.3 5.3 4.0 5.9 4.0 43.3 56.7 4.7 43.3 56.7 4.3 46.7 53.3 4.7 PST-K13-141 7.0 8.7 4.3 3.7 5.5 3.7 53.3 46.7 4.3 60.0 40.0 6.0 46.7 53.3 4.7 CLOUD (GO-2425) 7.7 8.3 6.7 6.7 7.1 6.7 75.0 25.0 4.7 83.3 16.7 8.3 48.3 51.7 4.3 DLFPS-340/3364 7.7 7.7 3.7 3.3 5.2 3.3 38.3 61.7 5.3 43.3 56.7 4.3 41.7 58.3 4.3 DLFPS-340/3446 7.0 7.7 5.3 4.0 5.5 4.0 41.7 58.3 4.7 40.0 60.0 4.0 43.3 56.7 4.3 DLFPS-340/3556 7.0 8.0 3.3 3.3 4.9 3.3 43.3 56.7 4.7 40.0 60.0 4.0 43.3 56.7 4.3 PIVOT 7.7 8.3 6.3 5.0 6.5 5.0 48.3 51.7 5.0 23.3 76.7 2.3 43.3 56.7 4.3 BAR PP 71213 7.0 8.0 3.7 3.3 5.0 3.3 36.7 63.3 4.7 40.0 60.0 4.0 40.0 60.0 4.0 DUBLIN (PST-K15-157) 7.3 9.0 5.0 3.7 5.7 3.7 56.7 43.3 4.3 53.3 46.7 5.3 40.0 60.0 4.0 HEARTLAND (NAI-14-187) 7.3 8.3 6.3 4.3 6.3 4.3 56.7 43.3 6.0 50.0 50.0 5.0 40.0 60.0 4.0 J-2726 6.7 6.3 3.7 4.0 4.9 4.0 41.7 58.3 5.3 40.0 60.0 4.0 40.0 60.0 4.0 NEW MOON (PST-K15-177) 7.0 7.0 3.7 3.7 4.8 3.7 43.3 56.7 5.0 40.0 60.0 4.0 40.0 60.0 4.0 PST-K15-172 7.0 7.3 3.7 3.3 5.0 3.3 38.3 61.7 5.0 36.7 63.3 3.7 40.0 60.0 4.0 RAD 553 7.3 7.0 5.0 4.3 5.9 4.3 50.0 50.0 5.0 43.3 56.7 4.3 40.0 60.0 4.0 A12-34 7.7 7.7 4.0 3.7 5.3 3.7 36.7 63.3 4.7 40.0 60.0 4.0 36.7 63.3 3.7 NAI-14-128 7.7 7.3 5.7 4.0 5.5 4.0 38.3 61.7 4.3 43.3 56.7 4.3 36.7 63.3 3.7 A11-38 7.0 6.7 3.7 3.7 5.2 3.7 41.7 58.3 5.0 46.7 53.3 4.7 33.3 66.7 3.3 DLFPS-340/3494 7.3 6.7 4.0 3.3 4.9 3.3 31.7 68.3 5.3 23.3 76.7 2.3 23.3 76.7 2.3 PPG-KB 1320 7.0 8.3 4.0 3.7 5.2 3.7 30.0 70.0 5.7 20.0 80.0 2.0 13.3 85.0 1.3 LSD VALUE 5.3 3.1 2.4 2.2 1.5 2.2 35.5 35.4 3.8 41.2 39.7 4.2 50.0 52.4 4.7 C.V. (%) 14.8 12.3 24.2 25.3 14.0 25.3 29.8 44.3 17.4 35.2 47.3 35.2 35.2 58.1 33.9 1/ TO DETERMINE STATISTICAL DIFFERENCES AMONG ENTRIES, SUBTRACT ONE ENTRY'S MEAN FROM ANOTHER ENTRY'S MEAN. STATISTICAL DIFFERENCES OCCUR WHEN THIS VALUE IS LARGER THAN THE CORRESPONDING LSD VALUE (LSD 0.05). 2/ C.V. (COEFFICIENT OF VARIATION) INDICATES THE PERCENT VARIATION OF THE MEAN IN EACH COLUMN. TABLE A. 2020 LOCATIONS, SITE DESCRIPTIONS AND MANAGEMENT PRACTICES IN THE 2017 NATIONAL KENTUCKY BLUEGRASS TEST SOIL SOIL SUN MOWING SOIL SOIL PHOSPHOROUS POTASSIUM NITROGEN OR HEIGHT IRRIGATION LOCATION TEXTURE PH (LBS/ACRE) (LBS/ACRE) (LBS/1000 SQ FT) SHADE (IN) PRACTICED VA2 ILT LOAM AND SILT 4.6-5.5 0-60 0-150 3.1-4.0 LIGHT SHADE 1.6-2.0 ONLY DURING SEVERE STRESS