TABLE 16. MEAN TURFGRASS QUALITY AND OTHER RATINGS OF KENTUCKY BLUEGRASS CULTIVARS IN THE 2017 NATIONAL KENTUCKY BLUEGRASS TEST AT STILLWATER, OK 1/ 2021 DATA TURFGRASS QUALITY AND OTHER RATINGS 1-9; 9=BEST 2/ GENETIC LEAF SUMMER FALL PERCENT GROUND COVER QUALITY RATINGS NAME COLOR TEXTURE DENSITY DENSITY SPRING SUMMER FALL JAN MAR MAY JUN JUL AUG SEP NOV MEAN BARSERATI (BAR PP 110358) 6.3 7.3 6.3 6.7 94.0 98.7 89.7 4.7 4.3 5.7 7.3 5.3 4.3 6.7 6.3 5.6 A13-1 7.0 7.0 6.7 5.3 89.7 98.0 93.0 5.0 4.7 5.7 7.0 4.7 4.3 6.0 6.7 5.5 BLUE GEM (NAI-13-9) 7.0 7.0 6.3 6.3 87.7 96.3 73.3 4.7 4.3 6.0 6.7 5.0 4.3 5.7 7.0 5.5 DLFPS-340/3553 7.0 6.3 5.3 5.7 95.0 98.7 85.0 5.0 5.3 6.0 7.0 5.7 3.3 4.7 6.0 5.4 JERSEY (NAI-A16-3) 7.0 6.7 6.3 5.7 94.7 98.0 91.7 4.3 5.7 6.0 6.3 5.7 3.3 5.3 6.7 5.4 KH3492 6.3 7.0 6.0 6.0 94.3 97.3 81.7 5.0 5.7 6.0 6.7 5.0 3.7 4.7 6.3 5.4 NAI-15-80 6.7 7.3 6.3 5.7 89.7 96.0 89.7 4.3 4.3 5.7 6.7 4.7 4.3 6.0 7.0 5.4 PPG-KB 1131 6.0 7.0 6.7 6.0 89.7 98.3 79.7 4.0 4.3 6.0 6.7 5.3 4.7 5.3 6.7 5.4 SKYE 7.0 7.0 7.0 6.0 95.3 99.0 97.7 4.7 4.7 5.7 6.7 5.3 4.7 4.3 7.0 5.4 BABE 6.0 7.3 7.0 6.3 91.0 97.7 89.3 4.0 5.3 6.0 7.0 5.3 4.0 4.0 6.3 5.3 BAR PP 79494 6.3 7.0 6.3 5.3 93.0 97.0 89.7 5.3 4.7 5.3 7.0 4.7 4.0 5.3 6.3 5.3 BAR PP 7K426 5.0 7.3 6.7 5.3 95.3 97.0 84.7 5.0 5.0 6.0 6.7 5.7 3.7 4.0 6.7 5.3 BLUE DEVIL 7.0 7.0 6.0 5.0 91.3 82.7 89.7 4.7 4.7 5.7 6.7 5.0 4.0 5.0 6.3 5.3 BOMBAY (GO-22B23) 7.0 7.0 6.3 6.0 94.7 98.7 83.0 4.3 4.7 5.7 6.7 6.0 4.3 4.0 7.0 5.3 DLFPS-340/3364 7.3 7.0 7.0 5.3 85.7 97.3 93.0 4.0 4.7 6.0 7.0 5.0 3.7 5.3 6.3 5.3 PST-11-7 7.0 7.0 7.0 5.7 94.7 97.7 99.0 5.0 4.3 6.0 7.0 5.3 3.7 4.0 7.0 5.3 SELWAY 6.7 7.7 5.7 6.0 95.0 95.7 83.3 4.7 4.7 5.7 7.0 5.7 3.7 5.0 6.3 5.3 A15-6 7.0 7.0 6.3 4.7 94.0 96.0 76.7 4.0 4.7 6.3 7.0 4.3 4.0 5.3 6.0 5.2 AFTER MIDNIGHT 7.3 7.0 6.3 5.3 95.7 97.0 78.3 4.7 4.0 5.0 6.7 5.0 4.0 5.3 6.7 5.2 AMAZE (NAI-14-133) 7.0 7.0 6.3 5.7 84.0 97.3 93.0 5.0 4.0 5.7 6.3 5.3 3.7 5.0 6.7 5.2 BAR PP 7236V 5.7 6.7 6.3 5.7 93.0 98.0 96.0 5.3 5.7 5.7 6.3 5.0 4.0 3.3 6.3 5.2 HEARTLAND (NAI-14-187) 7.0 7.3 6.7 5.3 87.7 93.3 68.3 4.3 5.0 5.7 6.7 4.3 3.3 5.0 7.0 5.2 PST-K13-141 6.3 7.0 7.0 4.7 90.7 96.7 91.7 4.3 4.7 6.3 7.3 4.3 3.3 5.0 6.3 5.2 AKB3128 7.0 7.0 5.3 5.0 94.3 93.3 63.3 4.0 5.3 5.7 6.7 4.7 3.3 5.3 6.0 5.1 CLOUD (GO-2425) 7.3 7.0 7.0 6.0 98.0 99.0 94.7 3.7 3.7 4.7 6.3 5.7 4.3 5.3 7.0 5.1 DUBLIN (PST-K15-157) 7.7 7.0 5.0 5.0 87.7 95.7 36.7 4.3 4.3 6.3 7.3 4.3 3.3 4.7 6.0 5.1 NK-1 6.3 7.3 6.0 5.0 81.7 91.7 68.3 4.0 5.0 5.7 6.3 4.3 3.7 5.3 6.7 5.1 PPG-KB 1304 7.3 7.0 6.0 5.0 96.0 71.7 91.3 4.7 5.3 6.0 6.0 4.3 3.7 4.7 6.0 5.1 STARR (GO-2628) 7.3 7.0 7.3 5.7 98.3 98.3 76.3 4.0 4.3 6.0 6.3 5.7 4.3 3.3 6.7 5.1 A16-17 6.3 7.3 6.7 4.7 93.3 94.7 76.7 3.3 4.7 5.7 6.7 4.0 4.0 4.7 7.3 5.0 A16-7 6.7 6.7 6.7 5.0 93.0 97.7 78.0 5.0 4.3 5.0 6.0 4.7 3.7 4.3 6.7 5.0 DLFPS-340/3444 6.3 6.7 6.0 5.0 96.0 97.3 63.3 5.3 4.3 5.7 6.7 4.7 3.7 3.3 6.7 5.0 DLFPS-340/3455 6.0 6.3 5.7 4.7 96.7 96.3 83.3 4.3 4.3 6.0 6.7 4.7 3.7 4.3 6.3 5.0 DLFPS-340/3550 6.3 6.7 6.7 4.7 95.0 96.3 85.0 4.0 4.3 5.3 6.0 4.7 3.3 5.3 6.7 5.0 DLFPS-340/3552 6.3 7.0 6.7 4.7 98.0 95.3 81.3 4.0 4.3 5.3 5.7 4.3 4.0 5.7 6.7 5.0 DLFPS-340/3556 6.7 7.0 6.0 4.7 93.7 73.3 80.0 4.3 4.7 6.3 5.7 3.7 3.3 5.7 6.3 5.0 ELECTRIC (PST-K11-118) 6.3 7.3 5.3 5.0 91.7 72.0 86.7 5.0 4.3 5.7 6.7 4.7 3.0 4.0 6.7 5.0 FINISH LINE (NAI-14-178) 6.3 7.7 6.3 5.0 84.3 97.0 70.0 4.0 4.7 5.7 6.7 4.7 3.3 5.0 6.0 5.0 J-1138 6.3 7.0 6.0 6.0 90.0 98.0 86.7 5.0 4.3 5.3 6.3 5.0 4.0 4.0 6.3 5.0 NAI-14-128 7.3 7.3 6.0 5.0 87.3 75.3 86.3 5.0 4.3 5.3 6.0 4.0 3.7 4.3 7.0 5.0 NAI-14-132 6.7 7.3 7.0 6.0 83.3 97.7 86.3 4.3 4.0 6.0 7.0 5.3 3.3 3.7 6.3 5.0 ORION (PST-K13-143) 7.3 6.7 6.7 5.7 93.3 97.7 79.7 4.3 4.7 5.7 5.7 4.7 4.0 5.3 6.0 5.0 PST-K15-172 6.7 6.7 6.3 5.0 92.0 93.0 78.3 3.7 4.3 6.0 6.0 4.3 3.7 5.3 6.3 5.0 RAD 553 6.3 7.0 5.7 4.7 94.0 91.0 43.3 4.0 5.3 5.3 6.3 4.3 3.3 5.3 6.3 5.0 RAD-1776 6.0 7.3 6.7 5.0 90.0 92.7 83.0 4.3 5.0 5.7 6.7 4.0 3.3 4.0 6.7 5.0 TWILIGHT (NAI-13-132) 6.7 7.0 6.0 5.0 86.0 90.7 80.0 4.3 4.3 5.7 6.7 4.7 3.3 4.7 6.7 5.0 A10-280 7.3 6.7 6.0 4.0 88.3 68.3 69.7 3.7 5.0 5.7 6.3 3.7 3.3 5.3 6.3 4.9 A11-40 6.0 7.3 6.0 5.3 91.0 96.3 83.0 4.3 4.7 4.7 5.3 4.3 4.0 6.3 5.7 4.9 A12-34 7.0 6.7 5.7 4.7 91.0 67.7 83.3 4.3 5.0 5.3 6.3 3.3 3.0 5.0 6.7 4.9 A99-2897 3.7 7.0 5.3 5.3 97.0 97.7 48.3 4.7 4.7 5.0 6.3 4.0 4.0 6.0 4.7 4.9 TABLE 16. MEAN TURFGRASS QUALITY AND OTHER RATINGS OF KENTUCKY BLUEGRASS CULTIVARS IN THE (CONT'D) 2017 NATIONAL KENTUCKY BLUEGRASS TEST AT STILLWATER, OK 1/ 2021 DATA TURFGRASS QUALITY AND OTHER RATINGS 1-9; 9=BEST 2/ GENETIC LEAF SUMMER FALL PERCENT GROUND COVER QUALITY RATINGS NAME COLOR TEXTURE DENSITY DENSITY SPRING SUMMER FALL JAN MAR MAY JUN JUL AUG SEP NOV MEAN AKB3241 7.0 7.0 5.0 5.7 92.0 94.0 71.7 4.0 4.7 5.7 6.7 4.3 3.0 4.3 6.3 4.9 BAR PP 71213 6.7 7.0 6.3 3.7 93.3 87.7 91.3 4.7 4.7 5.3 5.3 3.0 3.3 6.3 6.3 4.9 NURUSH (J-3510) 6.3 7.0 6.7 5.0 94.0 96.3 68.0 5.0 4.0 5.3 6.7 4.3 3.7 4.0 6.0 4.9 SHAMROCK 6.3 7.0 4.3 4.7 94.0 95.7 60.0 4.0 4.7 5.7 6.7 4.0 3.3 4.7 6.3 4.9 YELLOWSTONE (A12-7) 6.7 7.0 6.0 5.7 95.7 97.7 89.3 4.7 4.3 4.7 6.3 5.0 3.7 4.7 5.7 4.9 A16-2 6.3 6.3 5.0 5.3 97.7 96.7 73.3 4.3 5.0 6.0 5.7 5.0 3.0 2.7 6.7 4.8 AKB3179 7.3 7.3 6.3 5.0 92.3 84.7 85.0 4.3 5.0 5.3 6.0 3.7 3.0 4.7 6.3 4.8 AVIATOR II (NAI-15-84) 7.3 6.7 5.7 4.7 90.0 97.0 81.7 4.3 4.0 6.0 6.7 4.3 3.3 3.3 6.3 4.8 BAR PP 79366 6.7 7.0 5.7 4.7 94.0 81.3 73.3 4.3 4.3 5.3 6.0 4.7 4.0 3.3 6.3 4.8 BLUE KNIGHT 6.7 6.7 5.3 5.0 87.3 95.0 71.7 4.3 4.3 5.3 6.3 4.3 3.7 4.3 6.0 4.8 DLFPS-340/3548 6.7 6.7 5.7 4.7 95.7 96.7 85.0 4.0 5.0 5.0 6.7 5.3 2.7 3.7 6.0 4.8 DLFPS-340/3549 6.3 7.0 6.7 4.7 94.0 92.7 74.7 4.7 4.7 5.3 6.3 4.3 3.0 4.0 6.3 4.8 MIDNIGHT 7.0 6.7 5.7 6.0 93.3 98.3 70.0 4.3 4.0 6.0 7.0 4.7 3.7 3.0 5.3 4.8 MVS-130 7.0 7.0 6.0 4.3 88.3 88.7 71.3 4.3 4.3 5.7 6.7 3.7 3.0 4.3 6.7 4.8 NAI-14-122 7.3 7.0 5.3 5.7 82.0 96.0 83.3 4.3 4.3 5.0 7.0 4.7 2.7 4.3 6.3 4.8 PST-T14-39 6.3 7.0 4.3 5.7 90.7 98.0 61.7 4.7 5.0 6.0 6.3 5.3 2.3 4.0 4.7 4.8 SYRAH (LTP-11-41) 7.0 7.0 6.0 5.3 96.7 96.3 84.7 4.0 4.3 5.0 5.7 4.0 4.0 5.3 6.3 4.8 A11-26 7.7 6.7 6.3 4.3 91.3 90.3 80.0 4.0 4.3 5.3 6.3 4.3 2.7 4.0 6.7 4.7 BARVETTE HGT? 6.3 7.7 5.7 5.0 69.3 65.3 79.3 4.7 4.3 5.0 5.3 4.3 4.0 5.0 5.0 4.7 DLFPS-340/3438 7.3 6.7 5.3 4.3 92.3 88.7 63.3 4.0 4.7 5.3 6.3 4.3 3.3 4.0 5.7 4.7 DLFPS-340/3494 6.7 7.0 6.3 5.3 86.0 98.7 96.0 4.0 4.3 4.3 6.7 5.0 3.0 3.3 6.7 4.7 UNITED (NAI-13-14) 7.0 7.0 6.0 5.0 92.3 96.0 76.7 4.3 4.0 5.3 6.7 5.0 3.3 3.3 5.7 4.7 NEW MOON (PST-K15-177) 7.3 7.3 5.7 4.7 89.7 97.7 78.3 4.0 4.3 5.7 7.0 4.3 3.0 3.0 5.3 4.6 PALOMA (PST-K13-139) 6.0 6.7 5.7 4.3 92.3 91.0 56.7 4.3 4.3 5.3 5.7 4.0 2.7 4.3 6.3 4.6 COMANCHE (NAI-14-176) 6.7 7.0 6.0 5.0 83.3 91.0 58.3 4.3 3.7 5.7 6.3 4.0 2.3 4.0 5.7 4.5 J-2726 6.3 7.0 6.0 5.0 91.7 91.0 45.0 4.3 4.3 5.0 5.3 4.7 3.3 4.0 5.0 4.5 A16-1 6.3 6.7 4.3 4.0 92.3 91.7 56.7 4.3 4.0 5.0 5.7 4.0 3.0 3.7 5.3 4.4 DLFPS-340/3500 6.7 6.7 4.7 4.0 95.0 81.7 63.3 4.0 5.0 4.7 5.7 3.7 3.0 3.3 6.0 4.4 DLFPS-340/3551 6.3 6.7 5.3 4.0 94.7 94.0 66.7 4.0 5.0 5.3 5.3 3.7 3.0 4.0 5.0 4.4 KENBLUE 5.7 7.0 6.0 5.7 93.3 95.0 51.7 3.7 4.7 5.0 6.0 4.7 3.0 3.7 4.3 4.4 A06-8 6.7 6.7 4.0 4.0 93.3 82.7 46.7 5.0 4.0 6.0 7.0 3.0 2.7 2.7 3.7 4.3 DLFPS-340/3446 6.7 6.3 5.0 4.3 88.0 77.0 50.0 4.7 4.3 4.7 5.0 3.0 2.7 4.3 6.0 4.3 BAR PP 7309V 5.7 6.3 5.7 3.3 67.7 53.0 88.3 4.3 4.7 4.7 4.3 2.3 3.0 4.3 5.7 4.2 A11-38 5.0 6.0 3.7 4.3 90.3 67.7 51.7 3.0 3.3 5.0 5.7 3.3 3.0 3.3 4.3 3.9 PIVOT 5.3 7.0 4.3 4.3 83.3 70.0 53.3 3.3 3.3 4.7 5.0 3.3 2.7 3.7 4.3 3.8 PST-K15-167 6.7 6.7 5.0 5.7 92.7 74.3 60.0 3.3 3.7 4.0 4.7 4.7 2.7 3.0 4.7 3.8 J-1319 6.7 6.0 4.7 5.0 93.0 71.0 63.3 4.0 3.3 4.0 5.0 3.3 2.3 3.0 4.7 3.7 PROSPERITY 6.3 6.7 4.7 3.7 91.7 61.7 35.0 4.0 3.7 4.0 4.0 3.0 2.3 3.0 5.3 3.7 PPG-KB 1320 6.7 7.3 3.7 3.0 86.7 25.0 13.3 2.7 2.7 3.7 3.3 2.0 2.0 2.7 4.0 2.9 LSD VALUE 1.9 1.6 2.8 1.9 37.2 47.6 50.3 1.6 1.4 1.3 1.7 2.3 1.6 7.8 2.9 1.1 C.V. (%) 12.5 7.3 19.0 17.6 9.8 20.0 28.9 15.5 14.9 12.0 13.9 22.8 21.6 38.0 18.0 11.4 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. 2021 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 LOAM 7.1-7.5 61-150 241-375 2.1-3.0 FULL SUN 2.1-2.5 TO PREVENT STRESS