TABLE 15. MEAN TURFGRASS QUALITY AND OTHER RATINGS OF BENTGRASS CULTIVARS IN THE 2003 NATIONAL BENTGRASS (FAIRWAY) TEST AT STILLWATER, OK 1/ 2004 DATA TURFGRASS QUALITY AND OTHER RATINGS 1-9; 9=BEST 2/ PERCENT PERCENT PERCENT GENETIC SEEDLING DENSITY COVER COVER COVER QUALITY RATINGS NAME COLOR VIGOR FALL SPRING SUMMER FALL APR MAY JUN JUL AUG SEP OCT MEAN LS-44 7.0 5.7 8.7 86.7 96.0 99.0 5.7 7.3 6.7 7.3 8.0 8.3 8.3 7.6 PENNEAGLE II 7.3 6.0 8.7 95.7 96.7 99.0 5.0 8.0 7.0 7.0 8.0 9.0 8.0 7.6 13-M 7.0 5.7 9.0 87.7 96.0 99.0 5.7 7.7 6.7 7.0 8.0 8.3 8.0 7.5 SHARK (23R) 7.0 5.7 9.0 94.0 97.3 99.0 5.7 7.7 6.3 6.0 8.0 9.0 8.3 7.5 IS-AP 14 6.3 6.7 9.0 89.3 96.7 99.0 5.7 7.7 6.0 7.3 8.0 8.3 8.3 7.5 L-93 7.7 6.0 8.7 87.0 95.7 99.0 5.3 7.3 7.0 7.0 8.0 8.3 8.0 7.5 PST-OEB 8.0 5.7 8.7 75.7 91.0 99.0 5.0 7.3 6.7 7.0 8.0 8.7 8.3 7.5 SRX 1GPD 6.0 4.7 9.0 81.7 92.7 99.0 5.0 7.3 6.3 7.0 8.0 8.7 8.3 7.5 INDEPENDENCE 6.0 4.0 9.0 82.3 95.0 99.0 4.7 7.7 7.0 7.3 8.0 7.7 8.3 7.4 KINGPIN (9200) 8.0 4.0 9.0 76.7 91.7 98.7 5.0 6.7 6.7 7.7 8.0 8.0 8.0 7.4 235050 6.7 5.7 8.7 78.3 91.3 99.0 5.0 7.0 6.3 7.3 8.0 7.7 8.3 7.3 BENGAL 7.0 5.3 9.0 77.7 90.0 99.0 4.7 7.0 6.7 7.7 8.0 7.7 8.0 7.3 PENNLINKS II 8.0 4.3 7.7 94.0 96.0 99.0 5.7 8.0 7.3 6.0 7.7 8.7 7.7 7.3 SRX 1PDH 6.3 3.7 8.7 85.0 95.0 99.0 5.0 7.3 6.3 7.0 7.7 8.0 7.7 7.3 T-1 8.0 4.7 8.7 82.3 94.7 99.0 5.3 7.7 7.0 6.3 8.0 7.7 7.7 7.3 ALPHA 7.0 4.3 9.0 78.3 95.3 99.0 4.7 6.7 6.7 7.3 8.0 8.0 8.0 7.2 PENNCROSS 6.0 5.0 6.7 91.0 96.7 99.0 5.7 7.7 7.3 7.0 7.7 8.0 7.0 7.2 SR 1119 8.7 4.7 8.3 80.0 93.3 99.0 4.3 6.7 7.0 7.3 7.7 7.7 8.0 7.1 DECLARATION 6.0 4.0 8.7 80.0 94.0 99.0 4.3 7.3 6.3 7.7 7.7 7.0 7.3 7.0 PRINCEVILLE 6.0 6.7 7.7 84.0 91.7 98.3 4.7 7.3 6.3 6.7 7.7 7.3 6.7 6.8 BARDOT 6.7 4.7 8.0 65.0 88.7 99.0 4.0 7.0 6.0 6.7 7.7 7.3 6.7 6.7 TIGER II 9.0 5.3 6.3 90.0 94.7 98.3 4.7 7.3 7.0 5.0 7.0 6.3 6.0 6.5 SR 7150 8.0 3.3 7.0 78.3 94.3 97.3 4.0 6.7 7.0 5.3 7.0 6.0 6.3 6.1 EWTR 8.0 2.7 7.7 51.7 66.3 97.3 3.0 5.0 6.0 5.3 7.0 6.0 6.0 5.7 SEASIDE 6.0 7.7 6.0 88.0 91.7 97.7 5.7 7.0 6.0 5.3 6.7 4.7 4.3 5.7 IS-AT 7 8.7 4.0 7.0 81.7 89.7 97.0 4.0 6.0 6.7 5.0 6.7 5.3 5.0 5.6 PST-9NBC 7.7 3.3 7.0 58.3 82.7 97.7 3.3 5.3 5.7 5.3 6.3 5.3 5.3 5.4 PST-9VN 9.0 3.0 6.7 73.3 76.7 97.3 3.3 5.3 5.7 4.3 5.3 5.0 5.0 5.1 LSD VALUE 0.5 5.5 0.8 50.6 22.1 1.9 3.1 1.7 1.3 1.6 0.9 2.0 1.7 1.0 C.V. (%) 4.5 39.0 6.3 20.5 10.0 0.9 24.1 12.5 9.1 13.9 6.9 15.6 13.9 8.8 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 15. MEAN TURFGRASS QUALITY AND OTHER RATINGS OF BENTGRASS CULTIVARS IN THE (CONT'D) 2003 NATIONAL BENTGRASS (FAIRWAY) TEST AT STILLWATER, OK 1/ 2004 DATA TURFGRASS QUALITY AND OTHER RATINGS 1-9; 9=BEST 2/ PERCENT COVER RATINGS FROM DIVOT RECOVERY: WEEKS AFTER TREATMENT 4/ STUDY 1: CUT JUNE 15 3/ STUDY 2: CUT AUG. 31 STUDY 3: CUT OCT. 7 NAME 4 WEEKS 7.5 WEEKS 3.5 WEEKS 7 WEEKS 1.5 WEEKS 4 WEEKS LS-44 68.7 95.7 67.7 98.3 36.0 82.7 PENNEAGLE II 59.7 98.3 53.7 89.3 21.7 74.3 13-M 65.3 94.7 48.3 85.7 23.7 68.3 SHARK (23R) 62.7 98.7 65.0 95.3 19.3 67.3 IS-AP 14 50.7 96.3 64.7 99.0 21.7 82.0 L-93 70.3 96.7 77.7 98.3 45.7 92.3 PST-OEB 59.0 95.3 74.0 98.3 32.3 88.0 SRX 1GPD 65.7 95.7 49.7 90.7 18.0 73.0 INDEPENDENCE 84.3 97.3 56.7 94.7 21.0 82.0 KINGPIN (9200) 64.7 97.0 69.0 98.3 32.3 92.3 235050 61.7 98.7 52.3 90.0 26.7 88.7 BENGAL 70.3 96.3 44.0 93.3 26.0 77.3 PENNLINKS II 60.0 98.0 89.7 98.7 38.0 84.3 SRX 1PDH 35.3 97.3 67.0 94.3 30.7 85.3 T-1 80.0 98.7 54.7 95.0 29.0 89.3 ALPHA 65.7 97.0 38.7 81.0 31.7 82.7 PENNCROSS 83.7 91.7 85.7 97.0 48.3 88.3 SR 1119 62.3 98.0 63.3 98.3 32.0 85.0 DECLARATION 69.3 95.0 44.3 95.3 19.7 85.7 PRINCEVILLE 58.3 90.7 84.3 99.0 41.0 88.3 BARDOT 65.0 96.0 54.7 94.7 30.7 80.7 TIGER II 48.0 75.0 55.7 96.0 24.3 58.3 SR 7150 42.3 79.0 67.7 96.0 25.7 81.0 EWTR 50.0 85.3 64.7 98.0 35.3 87.0 SEASIDE 44.0 79.0 85.7 95.3 44.3 80.7 IS-AT 7 40.3 74.3 45.7 85.3 32.3 72.3 PST-9NBC 43.3 80.0 59.0 86.7 35.0 80.3 PST-9VN 38.3 74.0 79.0 95.3 50.0 85.7 LSD VALUE 35.1 20.0 46.5 28.8 30.9 37.9 C.V. (%) 27.3 10.7 30.5 9.2 39.9 15.7 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. ADDITIONAL TRIAL NOTES FOR DIVOT RECOVERY STUSY: 3/ STUDY ONE WAS PERFORMED USING A KICK-CUTTER MECHANICAL DEVICE. STUDIES TWO AND THREE WERE PERFORMED USING A MOTORIZED, MODIFIED "EDGER" DEVICE WHICH ALSO SIMULATED UNIFORM DIVOTS. 4/ PHOTOS OF EQUIPMENT USED AND/OR DIGITAL FILES FOR THE DIVOTS AT EACH RECOVERY DATE ARE AVAILABLE FROM OSU TURF PROGRAM UPON REQUEST. DURING 2004, HOLLOW TINES WERE USED FOR AERIFICATION. TABLE A. 2004 LOCATIONS, SITE DESCRIPTIONS AND MANAGEMENT PRACTICES IN THE 2003 NATIONAL BENTGRASS (FAIRWAY/TEE) 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 7.6-8.5 61-150 501+ 3.1-4.0 PARTIAL SHADE 0.0-0.5 TO PREVENT STRESS