TABLE 6. MEAN TURFGRASS QUALITY AND OTHER RATINGS OF PERENNIAL RYEGRASS CULTIVARS IN THE 2022 PERENNIAL RYEGRASS TEST AT AMES, IA 1/ 2024 DATA TURFGRASS QUALITY AND OTHER RATINGS 1-9; 9=BEST 2/ GENETIC SPRING SPRING SUMMER FALL PERCENT GROUND COVER QUALITY RATINS NAME COLOR GREENUP DENSITY DENSITY DENSITY SPRING SUMMER FALL APR MAY JUN JUL AUG SEP OCT NOV MEAN PPG-PR 620 8.0 7.0 5.3 4.7 4.3 76.0 45.7 56.3 6.7 9.0 7.0 6.3 6.0 6.3 6.7 7.7 7.0 IGNITION (PPG-PR 647) 8.0 6.7 5.7 7.3 4.3 78.3 37.3 56.0 7.3 9.0 6.3 5.7 6.3 5.7 6.3 7.3 6.8 RELIC (PPG-PR 611) 8.0 7.3 4.7 5.0 4.0 81.3 39.7 52.0 7.3 9.0 7.0 6.0 6.0 5.3 6.3 7.0 6.8 SLIDER 2LS (PPG-PR 637) 8.0 7.0 4.3 4.0 4.3 68.0 42.3 58.3 5.7 9.0 6.3 6.0 6.7 5.7 6.7 8.0 6.8 PPG-PR 642 8.0 7.3 7.0 6.0 4.3 80.0 37.0 51.0 7.3 9.0 6.7 5.3 6.7 6.0 6.3 6.0 6.7 PPG-PR 643 8.0 7.0 6.3 4.7 4.3 70.3 36.7 63.3 5.7 9.0 6.0 5.7 6.3 6.0 7.3 7.3 6.7 20PR10 7.7 6.7 6.3 4.0 4.3 71.0 42.7 60.7 6.0 8.7 6.7 6.3 6.3 4.3 7.0 7.3 6.6 HOMERUN 3LS (PPG-PR 644) 8.0 7.0 5.7 5.7 4.3 74.0 39.0 60.3 6.3 9.0 6.0 6.0 6.0 5.7 7.0 7.0 6.6 PST-2ADS 8.0 7.0 5.0 5.0 4.0 76.0 42.0 54.7 6.7 8.3 6.0 6.3 6.7 5.7 6.3 6.7 6.6 CJP1R 8.0 7.0 5.3 4.0 4.7 71.7 42.3 52.0 6.0 9.0 6.7 6.0 6.3 5.3 6.0 7.0 6.5 DLF-LGT-3066 7.7 7.3 4.7 5.3 4.0 72.0 43.7 59.3 6.0 7.3 7.0 6.3 6.3 5.7 7.0 6.3 6.5 DLF-PR-3738 8.0 7.3 3.3 5.3 4.3 69.0 40.7 64.3 6.0 8.7 6.3 6.0 6.3 5.0 7.3 6.7 6.5 GO-RUS21 7.7 7.3 6.7 5.0 4.7 66.7 41.7 58.0 6.0 8.7 7.3 6.0 6.3 5.0 6.7 6.3 6.5 HOMERUN LS 8.0 7.0 6.3 5.3 4.7 77.3 40.0 59.3 7.0 9.0 6.3 5.7 6.3 4.7 6.3 6.3 6.5 SILETZ 8.0 7.3 6.3 3.7 4.7 72.0 39.7 56.3 6.0 8.7 6.7 5.7 5.7 5.3 6.3 7.3 6.5 LTP-RPP4 8.0 7.3 5.0 4.7 4.3 70.7 37.7 53.3 6.0 8.7 6.3 5.7 6.0 5.0 6.0 7.3 6.4 PVF-SGS5 8.0 7.3 6.0 6.0 4.7 72.3 40.7 42.3 6.3 9.0 6.0 6.0 5.7 5.7 5.3 7.0 6.4 RPP3 8.0 7.0 4.0 3.3 4.3 71.0 39.3 44.7 6.7 8.0 6.0 6.0 6.7 6.0 5.7 6.3 6.4 APS 8.0 7.3 6.0 6.0 4.3 72.7 37.0 54.3 6.3 8.3 6.7 5.3 5.3 5.3 6.3 7.0 6.3 BAR LP 22262 8.0 7.0 4.7 5.3 4.0 76.3 36.0 53.3 6.7 8.3 6.0 5.3 5.7 5.3 6.3 6.7 6.3 DLF-PR-3729 8.0 7.0 7.3 5.7 5.0 70.0 39.0 58.3 6.0 8.7 6.7 5.7 5.3 4.3 6.3 7.0 6.3 DLF-PR-3735 8.0 7.3 5.0 6.7 4.7 63.0 38.0 62.0 5.3 8.3 6.7 5.7 5.7 5.3 7.0 6.0 6.3 DLF-PR-3736 7.7 7.3 4.0 3.3 4.7 64.0 42.7 55.7 5.3 8.3 7.7 6.0 6.3 4.3 6.3 6.0 6.3 LIGHTSPEED (PST-2DRG) 8.0 7.3 6.0 5.0 4.3 74.0 35.3 58.3 6.3 9.0 6.3 5.7 5.3 5.0 6.7 6.0 6.3 LTP-NR 8.3 7.0 5.0 6.0 4.0 80.0 37.3 56.7 7.3 6.7 6.3 5.7 5.7 5.3 6.3 6.7 6.3 PERFORMANCE (NAI-PR5) 8.0 7.0 5.0 6.7 4.3 79.0 37.0 57.0 7.3 8.3 5.7 5.3 5.7 5.0 6.7 6.7 6.3 PPG-PR 610 8.0 7.0 5.3 5.3 4.3 67.0 38.0 63.7 6.0 8.7 6.0 5.3 6.0 4.7 7.0 6.7 6.3 PPG-PR 646 8.3 7.3 5.7 6.3 4.3 71.0 33.3 55.3 6.3 8.7 5.7 5.3 6.0 5.3 6.3 6.7 6.3 PS4 8.0 7.0 6.0 6.3 5.0 69.0 36.0 61.0 5.7 8.7 6.3 5.3 5.7 5.0 7.0 6.7 6.3 SUNDOWN (BY-PS2) 8.0 7.0 5.7 4.3 4.7 78.0 40.0 53.0 6.7 8.3 6.0 6.0 6.0 4.3 6.0 7.3 6.3 VORTEX SRT (PPG-PR 665) 8.0 7.3 6.3 6.3 4.3 74.3 36.7 51.0 6.3 9.0 6.7 5.3 6.0 4.3 5.7 6.7 6.3 BAR LP 22256 7.7 7.3 5.3 5.0 4.3 66.0 33.3 60.0 5.7 7.7 6.3 5.3 6.3 4.7 7.0 6.3 6.2 DLF-PR-3727 8.0 7.3 4.7 6.0 4.3 64.7 37.7 56.7 5.3 8.7 7.0 5.7 5.7 4.7 6.3 6.3 6.2 DLF-PR-3730 8.0 8.0 4.7 4.3 4.3 66.3 39.0 48.7 5.7 8.3 7.0 5.7 6.0 4.7 5.7 6.3 6.2 GRAY EAGLE SLT (PST-2MEG) 8.0 7.0 4.3 5.7 4.3 82.0 35.3 62.7 7.3 8.3 5.7 5.3 5.3 5.3 7.0 5.0 6.2 PPG-PR 602 8.0 7.3 5.0 5.7 4.3 76.7 36.3 54.0 6.7 8.0 6.0 5.7 6.0 5.0 6.3 5.7 6.2 PPG-PR 606 8.0 7.3 6.7 5.7 4.3 74.3 32.7 58.7 6.7 9.0 6.7 5.0 5.3 4.3 7.0 5.3 6.2 PPG-PR 639 8.0 7.3 3.7 5.0 4.3 66.3 36.7 53.7 5.7 8.0 6.3 5.7 6.0 4.7 6.3 6.7 6.2 PPG-PR 662 8.0 7.3 4.7 4.3 4.7 71.0 40.0 57.3 6.0 8.0 7.0 6.0 5.7 4.7 6.3 5.7 6.2 PPG-PR 663 8.0 7.7 5.0 5.0 4.7 72.3 39.3 54.7 6.3 8.7 6.7 5.7 6.0 4.7 6.3 5.3 6.2 PST-2BGL 8.0 7.3 5.7 5.0 4.7 69.0 38.7 56.0 6.0 8.7 6.7 6.0 5.3 4.3 6.3 6.0 6.2 PVF-RPP2 8.0 7.0 6.0 3.7 4.7 75.0 33.3 54.7 6.3 8.7 5.7 5.0 6.0 5.0 6.3 6.7 6.2 ULTRA SPORT (PST-2HAF20) 8.0 7.7 5.0 5.7 4.7 80.7 30.3 57.3 7.3 8.3 5.7 5.0 6.0 4.7 6.3 6.0 6.2 APPLE 4GL (PPG-PR 658) 8.0 7.3 6.7 6.0 4.0 73.3 38.7 55.7 6.0 8.3 5.7 5.3 5.7 5.3 6.3 6.0 6.1 BAR LP 22174 7.3 6.7 3.3 7.3 4.3 73.0 32.7 53.7 6.3 7.7 6.3 5.3 5.7 5.0 6.3 6.3 6.1 BAR LP 22263 7.7 7.0 4.3 6.0 4.0 65.3 32.0 50.0 5.7 8.0 6.7 5.0 6.0 5.3 6.0 6.3 6.1 DLF-PR-3726 8.0 7.3 3.0 6.3 4.3 60.3 40.3 57.3 5.0 8.3 6.7 6.0 5.7 4.7 6.7 5.7 6.1 TABLE 6. MEAN TURFGRASS QUALITY AND OTHER RATINGS OF PERENNIAL RYEGRASS CULTIVARS (CONT'D) IN THE 2022 PERENNIAL RYEGRASS TEST AT AMES, IA 1/ 2024 DATA TURFGRASS QUALITY AND OTHER RATINGS 1-9; 9=BEST 2/ GENETIC SPRING SPRING SUMMER FALL PERCENT GROUND COVER QUALITY RATINS NAME COLOR GREENUP DENSITY DENSITY DENSITY SPRING SUMMER FALL APR MAY JUN JUL AUG SEP OCT NOV MEAN ELEKTRA GLR (PPG-PR 671) 8.0 7.3 5.7 5.0 5.0 73.0 38.7 45.7 6.3 8.3 6.0 6.0 6.0 4.3 5.7 6.0 6.1 HIGH OCTANE 8.0 7.0 5.0 5.0 4.7 66.0 37.7 58.0 6.0 7.7 5.7 5.3 5.7 5.3 6.7 6.3 6.1 PPG-PR 664 8.0 7.3 6.0 3.3 4.7 72.3 36.7 48.7 6.3 8.7 6.7 5.3 6.0 4.3 5.7 6.0 6.1 PPG-PR 667 8.0 7.7 6.0 3.0 4.3 64.3 33.3 60.7 5.3 8.7 6.7 5.3 5.7 4.3 7.0 5.7 6.1 PPG-PR 668 8.0 7.3 6.0 4.7 4.0 67.3 37.3 51.0 6.0 9.0 6.7 5.7 5.3 4.0 6.0 6.3 6.1 PPG-PR 670 8.0 8.0 4.0 5.3 4.7 72.7 34.7 57.3 6.3 8.7 6.7 5.7 5.0 4.3 6.3 5.7 6.1 PST-2GDS 8.0 7.7 5.7 5.7 4.3 66.7 35.7 52.3 5.7 8.7 6.7 5.3 6.0 4.7 6.3 5.7 6.1 PST-2MES1 7.7 7.7 4.7 4.3 5.3 72.3 33.0 61.7 6.3 8.3 6.0 5.3 6.0 4.0 7.0 5.7 6.1 QUASAR 7.7 7.0 4.3 6.3 4.3 60.7 41.3 51.0 5.0 8.0 7.0 6.0 6.0 5.0 6.0 5.7 6.1 SGP4 8.0 7.7 5.3 4.3 4.7 66.3 37.3 50.0 5.7 8.3 6.3 5.7 5.7 5.0 6.0 6.0 6.1 STELLAR 4GL 8.0 7.0 6.3 3.0 5.0 64.0 31.3 53.3 5.7 9.0 6.7 5.0 5.3 4.3 6.0 6.7 6.1 BRIGHTSTAR SLT 8.0 7.0 5.3 6.7 3.3 71.7 39.7 57.3 6.3 8.3 6.7 6.0 4.7 4.0 6.7 5.7 6.0 DLF-PR-3728 8.0 7.3 3.0 5.0 4.7 60.0 37.3 50.0 5.0 7.3 6.3 5.3 6.3 5.3 6.0 6.3 6.0 FLIGHTLINE (PST-214) 8.3 7.3 5.0 6.0 4.3 74.3 34.7 60.3 6.3 8.7 5.7 5.3 5.0 4.7 6.7 6.0 6.0 GO-RUS20 7.7 7.0 7.7 5.0 5.7 65.3 34.7 58.3 5.7 8.3 6.7 5.3 5.0 4.7 6.7 5.3 6.0 GO-RUS22 8.0 7.3 5.7 6.3 4.3 68.3 36.0 53.7 5.7 8.7 6.7 5.7 5.3 4.7 6.3 5.3 6.0 PISTON 8.0 7.7 3.7 6.3 5.0 79.7 38.0 52.0 7.0 6.7 5.7 5.7 6.0 4.7 5.7 6.7 6.0 PPG-PR 666 8.0 7.3 5.0 6.7 4.3 65.7 34.7 58.0 5.3 8.3 7.0 5.3 5.7 4.0 6.7 5.7 6.0 PST-2HFM 8.0 7.7 3.7 6.0 5.0 81.3 26.3 51.7 7.3 7.7 5.3 4.3 5.7 4.7 6.3 6.3 6.0 PST-2SPF 8.0 7.0 4.3 5.7 4.0 79.0 31.0 51.3 7.0 8.0 5.7 5.0 5.7 5.3 6.0 5.7 6.0 BAR LP 22191 7.7 7.3 4.7 6.7 4.7 62.0 30.7 63.3 5.0 8.3 6.7 5.0 5.7 3.7 7.0 6.0 5.9 DLF-PR-3737 8.0 7.3 4.3 4.3 4.0 60.0 32.0 52.0 5.0 8.0 6.7 5.0 5.0 5.7 6.3 5.3 5.9 PST-2E6 8.3 7.0 3.3 3.7 4.3 77.3 41.0 53.7 6.7 7.0 5.7 6.0 5.3 3.7 6.7 5.7 5.8 RC20-02O 8.0 7.7 5.3 6.7 6.3 70.3 36.7 57.0 5.7 7.7 6.3 5.7 5.3 3.7 6.7 5.0 5.8 STINGER (PST-2EGY) 7.7 7.7 4.0 4.7 5.0 71.3 33.0 49.7 6.0 7.3 6.0 4.7 5.3 4.3 6.0 5.7 5.7 PPG-PR 661 8.0 7.0 4.7 4.0 4.7 64.7 29.7 55.0 5.0 7.0 6.0 4.7 5.7 4.3 6.7 5.3 5.6 ALPHA CENTAURI 8.0 7.7 4.7 4.3 6.0 60.0 33.0 57.7 5.0 6.7 6.3 5.0 5.0 4.0 6.7 5.7 5.5 MRSL-PR22 8.3 8.0 4.3 5.7 5.0 63.3 27.3 64.0 5.3 7.0 6.0 4.7 4.3 4.3 7.0 5.7 5.5 PROMINENT II (TSC-CRS) 8.3 7.7 4.7 5.0 4.7 72.7 26.0 53.3 6.0 8.0 5.3 4.7 4.7 3.7 6.3 5.3 5.5 SEPR-2013 8.3 7.7 3.3 4.3 5.0 60.0 31.0 62.0 5.0 5.7 5.7 4.7 5.0 4.0 7.0 5.0 5.3 BSG-PR22 8.0 8.0 3.7 6.0 5.7 70.0 23.7 57.7 6.0 7.0 5.3 4.3 4.0 3.7 6.3 4.7 5.2 KARMA 8.0 7.7 4.0 4.7 4.7 53.0 32.7 53.0 4.0 5.7 5.7 5.0 6.0 4.3 6.0 4.7 5.2 LINN 7.7 6.7 2.7 7.0 4.3 57.3 30.7 53.7 4.7 5.0 5.3 5.0 4.7 4.7 6.0 6.0 5.2 NEXUS DK (SE-DK) 8.7 8.3 4.3 5.3 4.7 58.7 24.0 55.0 5.0 6.3 5.0 4.0 4.3 3.7 6.7 5.7 5.1 GREENBACK 8.0 8.0 4.0 4.7 6.0 62.0 24.3 57.0 5.3 6.0 5.7 4.0 4.7 3.0 6.7 4.7 5.0 DARK MATTER 8.0 8.0 4.7 6.0 6.7 59.7 26.3 50.7 5.0 6.7 5.0 4.3 4.3 3.0 6.0 5.0 4.9 LSD VALUE 0.9 1.0 4.0 4.2 3.2 36.3 8.2 62.9 4.5 2.3 1.1 1.1 1.5 1.5 5.9 2.0 0.7 C.V. (%) 3.6 6.2 29.9 28.6 19.0 14.8 13.1 18.4 19.9 13.6 9.6 10.6 12.8 16.4 14.9 15.0 6.4 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. 2024 LOCATIONS, SITE DESCRIPTIONS AND MANAGEMENT PRACTICES IN THE 2022 NATIONAL PERENNIAL RYEGRASS 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 IA1 SANDY CLAY LOAM 7.1-7.5 0-60 0-150 2.1-3.0 FULL SUN 2.1-2.5 TO PREVENT DORMANCY