TABLE 19. MEAN TURFGRASS QUALITY AND OTHER RATINGS OF KENTUCKY BLUEGRASS CULTIVARS IN THE 2017 NATIONAL KENTUCKY BLUEGRASS TEST AT STILLWATER, OK 1/ 2020 DATA TURFGRASS QUALITY AND OTHER RATINGS 1-9; 9=BEST 2/ GENETIC SPRING LEAF SPRING SUMMER FALL PERCENT GROUND COVER QUALITY RATINGS NAME COLOR GREENUP TEXTURE DENSITY DENSITY DENSITY SPRING SUMMER MAR APR MAY JUL AUG SEP OCT NOV MEAN BARSERATI (BAR PP 110358) 7.7 6.7 7.3 8.0 8.3 7.3 94.0 80.7 7.3 7.7 8.0 7.0 6.7 7.0 7.3 7.3 7.3 STARR (GO-2628) 7.3 5.7 7.3 7.7 6.7 7.0 98.3 80.0 6.7 7.0 8.0 7.7 6.3 7.7 6.3 7.7 7.2 A10-280 7.3 7.3 6.7 7.3 7.3 7.3 88.3 92.3 7.7 6.7 7.3 7.0 6.3 6.3 7.7 7.3 7.0 A11-26 8.0 6.3 7.0 8.0 6.0 7.0 91.3 84.3 7.0 7.3 8.0 7.7 6.3 6.7 5.7 7.3 7.0 A13-1 7.3 6.0 7.0 8.0 6.7 7.0 89.7 93.7 7.3 7.3 7.3 6.7 6.7 7.3 6.3 7.0 7.0 BAR PP 71213 7.7 6.0 7.0 8.0 7.7 7.0 93.3 88.7 6.3 7.0 7.3 7.0 6.0 7.7 7.0 7.3 7.0 BAR PP 79366 7.7 5.3 7.0 8.0 8.3 7.7 94.0 88.7 7.0 7.0 7.7 7.0 5.3 7.0 7.0 7.3 6.9 BARVETTE HGT? 7.0 7.3 7.3 7.7 8.3 7.0 96.7 81.3 7.0 7.3 7.3 7.3 6.3 7.3 5.7 7.0 6.9 DLFPS-340/3500 7.3 5.7 7.0 8.0 8.3 7.0 95.0 78.7 7.3 6.3 7.3 7.0 6.7 7.3 6.0 7.3 6.9 AFTER MIDNIGHT 8.7 5.7 7.0 7.7 7.3 7.3 95.7 86.3 7.0 6.0 7.7 6.3 6.3 7.3 6.3 7.0 6.8 BAR PP 79494 7.3 6.0 7.3 7.7 6.7 6.7 93.0 82.7 6.3 6.3 7.7 7.0 6.3 7.7 5.7 7.3 6.8 BLUE GEM (NAI-13-9) 8.3 6.7 7.0 8.0 6.7 7.3 87.7 86.0 6.0 6.3 7.7 7.3 5.7 7.0 6.3 8.0 6.8 CLOUD (GO-2425) 7.3 4.7 7.0 8.0 7.7 7.3 98.0 73.3 6.3 6.7 8.0 8.0 6.3 6.7 5.3 7.3 6.8 PPG-KB 1131 8.7 6.3 7.0 7.7 7.0 7.0 89.7 69.3 5.7 6.7 7.3 7.0 6.7 7.7 6.0 7.3 6.8 A16-17 7.3 3.0 7.0 8.0 8.0 7.0 93.3 91.0 6.7 6.7 7.0 6.7 6.7 6.3 6.7 7.0 6.7 J-1138 9.0 5.3 7.0 7.7 7.3 7.0 90.0 84.0 6.0 6.7 7.7 6.0 6.3 7.3 5.7 7.7 6.7 PST-K13-141 7.0 6.3 7.0 8.0 7.0 7.0 90.7 86.7 6.3 6.3 7.0 6.7 6.0 7.3 6.3 7.7 6.7 UNITED (NAI-13-14) 8.7 6.0 7.0 7.7 7.7 7.3 92.3 70.0 6.0 7.0 7.7 6.0 6.0 7.7 6.0 7.0 6.7 BOMBAY (GO-22B23) 7.3 6.0 7.0 8.0 7.0 7.0 94.7 82.0 6.7 6.3 7.7 7.3 5.7 6.7 5.3 7.3 6.6 DLFPS-340/3364 7.7 5.0 7.0 7.7 7.0 7.0 85.7 88.3 7.0 6.7 7.3 6.7 5.7 7.3 5.3 7.0 6.6 DLFPS-340/3551 8.0 5.0 7.0 7.0 7.3 7.7 94.7 83.3 6.3 6.7 6.7 7.0 6.3 7.3 5.7 6.7 6.6 NURUSH (J-3510) 7.7 6.3 7.0 7.0 7.3 7.0 94.0 81.0 5.7 6.7 7.7 6.7 5.0 6.7 7.0 7.7 6.6 A12-34 7.7 6.3 7.0 7.7 6.7 6.7 91.0 73.3 5.0 5.7 6.7 7.3 6.7 7.3 5.3 7.7 6.5 BAR PP 7309V 7.7 6.7 7.3 7.7 6.7 7.0 96.3 81.7 5.7 6.0 7.0 6.0 6.3 6.7 7.0 7.0 6.5 BAR PP 7K426 7.0 6.3 7.0 8.0 7.3 7.0 95.3 86.7 6.0 7.3 6.7 7.0 5.0 7.0 6.3 7.0 6.5 ELECTRIC (PST-K11-118) 8.0 5.7 7.3 7.7 7.7 7.7 91.7 83.3 6.0 6.7 7.7 6.3 4.7 6.7 6.3 7.3 6.5 MIDNIGHT 7.3 6.0 6.7 7.7 7.3 7.3 93.3 61.7 5.3 6.3 7.0 6.7 6.7 7.0 5.0 8.0 6.5 A11-40 7.7 6.0 7.0 8.0 6.7 7.0 91.0 85.7 6.0 7.0 7.0 6.7 5.3 6.3 6.3 6.7 6.4 DLFPS-340/3556 7.7 6.3 7.0 7.3 6.7 7.3 93.7 79.3 6.7 6.7 8.0 6.7 3.3 6.7 5.7 7.3 6.4 AKB3241 7.3 6.3 7.0 7.7 7.0 7.0 92.0 79.3 5.7 6.0 7.7 7.7 4.7 6.3 5.7 6.7 6.3 BAR PP 7236V 7.7 7.3 7.0 7.3 8.0 7.0 93.0 73.3 6.3 6.7 7.0 6.7 5.0 6.3 5.3 7.3 6.3 NK-1 8.3 6.0 7.0 7.0 7.3 7.0 81.7 67.7 6.7 7.0 6.3 6.7 5.7 5.3 6.0 6.7 6.3 PPG-KB 1304 7.7 6.3 7.0 8.0 7.7 7.3 96.0 84.7 5.7 6.0 7.7 6.7 6.3 6.7 4.7 6.7 6.3 PST-K15-172 7.7 4.3 7.0 8.0 8.0 7.0 92.0 87.3 6.3 7.0 6.7 6.3 5.0 6.7 6.0 6.7 6.3 RAD 553 7.3 6.3 6.7 8.0 7.3 7.3 94.0 75.7 5.3 6.0 6.7 7.0 5.3 6.7 7.0 6.7 6.3 RAD-1776 7.3 7.3 7.3 7.3 6.3 7.3 90.0 78.3 5.7 6.0 7.3 6.3 5.3 6.3 5.7 7.3 6.3 SKYE 8.0 6.0 7.0 7.7 7.0 7.0 95.3 72.3 5.3 6.0 7.3 7.0 6.7 6.7 4.0 7.7 6.3 A99-2897 7.3 6.3 7.0 7.7 7.3 7.0 97.0 91.0 6.7 6.7 7.0 5.7 5.0 5.3 6.7 6.7 6.2 BLUE DEVIL 7.7 6.0 7.0 7.3 6.7 7.3 91.3 77.3 5.3 6.0 7.3 7.0 5.7 6.0 4.7 7.7 6.2 DLFPS-340/3446 7.0 6.0 7.0 7.0 7.0 7.7 88.0 81.0 6.3 6.7 7.0 6.0 5.3 6.0 5.3 6.7 6.2 NAI-15-80 8.0 7.0 7.0 7.0 7.3 7.0 89.7 80.0 6.3 6.3 7.3 7.0 5.0 6.3 5.7 5.7 6.2 A15-6 8.3 6.7 7.0 8.0 6.7 7.0 94.0 70.0 5.3 5.3 6.3 7.0 6.0 7.0 4.7 7.3 6.1 DLFPS-340/3550 8.0 4.7 6.7 7.7 7.7 7.3 95.0 80.0 5.3 6.7 7.3 5.7 5.3 6.3 5.0 7.3 6.1 DLFPS-340/3553 7.7 6.7 7.0 8.0 8.0 8.0 95.0 83.3 6.0 6.0 6.7 6.7 4.3 7.0 5.3 7.0 6.1 SYRAH (LTP-11-41) 7.3 7.0 7.0 8.0 7.7 7.0 96.7 79.0 5.7 6.0 7.0 6.3 5.3 6.0 5.7 7.0 6.1 AKB3179 7.7 6.3 7.3 7.7 7.0 7.0 92.3 83.3 5.7 6.7 6.3 6.0 4.3 6.0 6.3 7.0 6.0 DLFPS-340/3438 7.7 6.0 7.0 8.0 6.3 7.3 92.3 46.7 5.3 6.0 6.7 6.7 5.7 6.3 4.7 6.3 6.0 DLFPS-340/3494 7.7 6.0 6.7 8.0 7.0 7.3 86.0 78.3 5.3 6.3 7.0 6.3 4.7 6.7 4.7 7.0 6.0 DLFPS-340/3552 7.0 5.7 7.0 7.3 7.0 7.3 98.0 70.7 4.7 6.0 7.3 7.0 6.0 6.7 4.3 6.3 6.0 PST-T14-39 7.7 6.3 7.0 8.0 6.7 7.0 90.7 79.3 6.7 6.3 7.0 5.3 5.0 5.7 5.7 6.7 6.0 TABLE 19. MEAN TURFGRASS QUALITY AND OTHER RATINGS OF KENTUCKY BLUEGRASS CULTIVARS IN THE (CONT'D) 2017 NATIONAL KENTUCKY BLUEGRASS TEST AT STILLWATER, OK 1/ 2020 DATA TURFGRASS QUALITY AND OTHER RATINGS 1-9; 9=BEST 2/ GENETIC SPRING LEAF SPRING SUMMER FALL PERCENT GROUND COVER QUALITY RATINGS NAME COLOR GREENUP TEXTURE DENSITY DENSITY DENSITY SPRING SUMMER MAR APR MAY JUL AUG SEP OCT NOV MEAN AKB3128 7.3 6.3 7.0 7.7 6.7 7.0 94.3 87.0 6.0 6.3 7.0 6.0 4.0 6.0 4.7 7.0 5.9 BLUE KNIGHT 7.3 7.0 7.0 8.0 7.7 7.0 87.3 67.7 4.7 5.7 7.0 5.7 5.0 6.7 6.3 6.3 5.9 DUBLIN (PST-K15-157) 7.0 6.0 7.0 8.0 6.7 7.0 87.7 74.0 4.7 6.0 7.3 6.0 5.0 6.7 4.3 7.0 5.9 SELWAY 7.3 5.7 7.0 7.3 7.3 7.7 95.0 73.3 4.7 5.7 6.7 6.3 5.3 6.3 6.0 6.3 5.9 TWILIGHT (NAI-13-132) 7.3 5.7 7.0 8.0 7.3 7.0 86.0 61.7 5.3 6.0 6.7 6.7 5.7 5.7 4.3 6.7 5.9 PST-K15-167 7.3 3.0 7.0 8.0 6.7 7.0 92.7 84.0 5.3 6.7 7.0 5.7 5.7 5.0 5.3 5.3 5.8 BABE 7.3 5.3 7.3 7.7 7.0 7.3 91.0 60.0 5.7 5.0 5.7 6.3 3.7 6.3 6.0 7.0 5.7 JERSEY (NAI-A16-3) 7.7 6.0 7.0 8.0 6.0 7.7 94.7 61.7 5.0 5.0 7.0 5.7 4.3 6.0 5.7 7.0 5.7 KH3492 7.7 7.0 7.3 8.0 6.0 7.7 94.3 65.0 5.3 5.7 6.7 6.0 4.0 5.7 6.0 6.3 5.7 YELLOWSTONE (A12-7) 7.0 6.3 7.3 7.7 6.3 7.0 95.7 85.0 5.0 4.7 7.3 6.0 4.0 6.0 5.7 6.7 5.7 A16-7 7.7 6.3 6.3 7.7 7.3 7.0 93.0 60.0 4.7 5.0 7.0 5.7 5.0 6.3 4.0 7.0 5.6 HEARTLAND (NAI-14-187) 7.3 5.7 7.0 7.0 7.0 7.0 87.7 62.7 5.3 5.0 6.7 5.7 5.7 6.3 4.0 6.3 5.6 MVS-130 7.3 5.7 7.0 7.3 6.7 7.3 88.3 75.7 5.0 6.0 6.7 5.7 4.7 5.7 4.3 6.7 5.6 NEW MOON (PST-K15-177) 8.0 3.0 7.0 7.7 6.7 7.0 89.7 84.0 4.3 5.7 7.0 6.3 4.7 6.3 4.0 6.7 5.6 FINISH LINE (NAI-14-178) 7.7 7.0 7.0 7.3 6.3 7.0 84.3 76.7 4.7 5.7 7.3 5.7 4.7 6.3 3.7 6.3 5.5 J-2726 7.3 5.7 7.3 7.7 6.7 7.0 91.7 72.3 5.0 5.0 7.0 4.7 4.7 6.0 5.7 6.0 5.5 NAI-14-128 7.3 6.0 7.3 7.0 6.7 7.0 87.3 65.0 4.3 5.3 6.0 6.3 4.7 6.3 4.3 6.3 5.5 DLFPS-340/3444 7.3 6.3 6.7 7.0 6.3 7.0 96.0 73.3 4.3 5.0 7.0 6.3 3.7 6.0 3.7 7.0 5.4 DLFPS-340/3455 7.7 6.0 7.0 7.7 6.3 7.0 96.7 58.3 4.3 5.3 6.7 6.0 4.0 6.0 3.7 7.0 5.4 NAI-14-122 8.0 6.0 7.0 7.3 7.3 7.0 82.0 46.7 4.3 5.7 6.3 5.3 5.3 5.3 4.3 6.3 5.4 ORION (PST-K13-143) 7.0 6.7 7.0 8.0 7.3 7.0 93.3 70.0 4.0 4.3 6.3 5.7 4.3 6.3 6.0 6.3 5.4 SHAMROCK 7.3 7.0 7.0 8.0 7.0 7.0 94.0 48.3 5.0 5.7 7.3 5.3 5.3 4.7 3.7 6.0 5.4 A06-8 7.3 6.3 7.0 7.7 7.7 6.7 93.3 61.7 4.7 5.0 6.7 5.7 3.7 5.7 4.7 6.0 5.3 PST-11-7 7.3 5.0 7.0 7.3 7.7 7.3 94.7 71.7 4.7 5.0 7.0 5.7 4.0 5.7 3.7 6.7 5.3 A16-2 7.3 7.0 7.0 8.0 6.3 7.0 97.7 52.7 5.0 5.0 6.3 5.0 3.7 4.7 4.0 7.0 5.1 AMAZE (NAI-14-133) 7.0 6.0 7.3 7.3 7.3 7.0 84.0 28.3 4.3 4.7 6.0 5.7 4.3 5.7 3.0 6.7 5.0 J-1319 7.7 6.3 7.0 7.7 5.7 7.3 93.0 59.3 5.0 5.0 6.7 5.0 4.0 5.0 4.7 5.0 5.0 KENBLUE 7.3 6.3 6.3 6.7 5.7 7.0 93.3 46.7 4.0 4.7 6.0 4.7 3.7 5.7 3.3 6.3 4.8 PALOMA (PST-K13-139) 7.3 5.3 7.0 7.3 6.3 7.0 92.3 73.3 5.0 5.3 6.0 4.7 2.7 4.0 4.0 6.7 4.8 A11-38 7.3 5.7 7.0 7.7 6.7 7.0 90.3 71.7 3.7 4.3 5.7 5.7 4.0 4.0 4.3 5.7 4.7 AVIATOR II (NAI-15-84) 7.0 5.3 6.7 7.0 6.0 7.0 90.0 65.0 3.7 4.7 6.3 4.7 4.3 5.0 3.0 6.0 4.7 DLFPS-340/3548 7.7 6.0 7.0 8.0 6.3 7.0 95.7 60.7 3.7 5.0 5.0 5.3 3.3 5.0 4.0 6.3 4.7 DLFPS-340/3549 7.0 6.0 7.0 8.0 6.7 7.3 94.0 55.0 4.0 4.7 5.7 5.7 3.0 4.7 3.3 6.0 4.6 PIVOT 7.0 5.7 6.7 7.0 6.3 7.3 83.3 78.3 4.0 5.3 6.0 5.0 4.0 4.0 4.3 4.3 4.6 A16-1 7.7 5.7 6.7 7.3 6.7 7.0 92.3 20.0 3.7 4.7 5.3 3.7 3.3 4.7 3.0 6.0 4.3 COMANCHE (NAI-14-176) 7.3 6.0 7.3 7.0 6.7 7.0 83.3 28.3 3.3 4.7 5.7 4.7 3.0 4.3 2.7 5.7 4.3 NAI-14-132 8.3 5.7 7.0 6.7 6.7 7.0 83.3 46.7 3.3 3.7 5.0 4.7 3.0 5.0 3.7 6.3 4.3 PROSPERITY 8.0 5.3 7.0 7.3 7.3 7.0 91.7 55.0 3.3 4.0 5.3 4.0 3.0 4.7 3.7 5.7 4.2 PPG-KB 1320 7.0 6.3 6.7 6.3 6.3 7.3 86.7 60.7 3.3 3.7 5.0 2.3 2.0 3.7 3.0 4.3 3.4 LSD VALUE 1.6 1.4 1.3 1.6 2.2 0.9 9.9 43.4 2.5 2.6 1.7 2.1 2.3 2.4 1.8 3.1 1.2 C.V. (%) 8.1 13.3 4.8 7.7 12.3 4.9 5.3 26.6 23.3 19.7 12.5 17.6 24.3 18.9 21.0 15.6 12.3 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 OK1 OAM 7.1-7.5 61-150 241-375 4.1-5.0 FULL SUN 2.1-2.5 TO PREVENT STRESS