TABLE 4. MEAN TURFGRASS QUALITY RATINGS OF PERENNIAL RYEGRASS CULTIVARS FOR EACH YEAR GROWN IN THE UNITED STATES AND CANADA 1987-1990 DATA TURFGRASS QUALITY RATINGS 1-9; 9=IDEAL TURF 1\ NAME 1987MEAN 1988MEAN 1989MEAN 1990MEAN 1987-90 MEAN PST-2PM (SATURN) 6.4 6.3 6.4 6.3 6.3 SR 4000 6.3 6.2 6.2 6.2 6.2 SR 4100 6.1 6.1 6.3 6.0 6.1 PST-2H7 (DIMENSION) 6.3 6.1 6.2 6.1 6.1 PST-M2E (MAIN. II W/E) 6.2 6.1 6.2 6.3 6.1 PENNANT 6.2 6.1 6.2 5.6 6.1 PST-259 (COMMANDER) 6.0 6.1 6.2 5.8 6.1 PICK 600 (FIESTA II) 6.3 6.1 6.1 5.2 6.1 REPELL 6.1 6.1 6.1 5.1 6.1 PICK 647 (RIVIERA) 6.3 6.1 6.1 5.8 6.0 PALMER 6.1 6.1 6.1 5.3 6.0 PICK 300 (BLAZER II) 6.1 6.0 6.0 5.4 6.0 OMEGA II 6.2 6.0 6.0 5.3 6.0 PST-2HH (CHARGER) 6.2 6.0 6.1 4.8 6.0 PST-250 (COMPETITOR) 6.2 6.0 5.9 5.7 6.0 MANHATTAN II 6.2 6.0 5.9 5.5 6.0 PICK 233 (DASHER II) 6.2 5.9 6.1 5.7 5.9 PICK 715 (EDGE) 6.0 5.9 6.1 5.7 5.9 PST-2DD 6.2 5.8 5.9 5.0 5.9 CITATION II 6.1 5.9 5.9 5.4 5.9 PRELUDE 6.0 5.9 5.9 5.0 5.9 ALLAIRE 6.0 5.9 5.9 5.0 5.9 GATOR 6.0 6.0 5.9 5.0 5.9 ISI-851 (LINDSAY) 6.0 5.9 5.8 5.2 5.9 KWS-AL-2 (AQUARIUS) 6.2 5.9 5.6 6.1 5.8 TARA 6.3 5.9 5.8 4.8 5.8 GOALIE 5.9 5.9 6.0 5.5 5.8 PSU-333 5.8 5.8 5.9 5.0 5.8 PATRIOT 5.9 5.8 5.8 4.6 5.8 RODEO 5.9 5.8 5.6 5.0 5.8 BIRDIE II 5.8 5.9 5.9 4.8 5.8 BAR LP 410 (BARRAGE) 5.9 5.8 5.8 3.9 5.7 CALIENTE 5.7 5.8 5.9 5.0 5.7 RUNAWAY 5.7 5.8 5.7 5.0 5.7 PSU-222 5.8 5.7 5.7 5.0 5.7 DERBY 5.9 5.7 5.7 4.8 5.7 BELLE 5.9 5.7 5.7 5.6 5.7 246 5.8 5.6 5.8 4.5 5.7 RANGER 5.8 5.7 5.6 5.1 5.7 SR 4031 (NOVA) 5.8 5.6 5.7 4.2 5.6 YORKTOWN II 5.8 5.5 5.5 4.0 5.6 REGAL 5.6 5.6 5.8 5.1 5.6 RIVAL 5.5 5.6 5.7 3.9 5.6 PENNIFINE 5.5 5.6 5.7 4.1 5.5 MOM LP 763 (TORONTO) 5.7 5.6 5.6 3.8 5.5 ACROBAT 5.7 5.6 5.5 4.0 5.5 BAR LP 454 (BARCREDO) 5.6 5.6 5.5 3.4 5.5 TABLE 4.MEAN TURFGRASS QUALITY RATINGS OF PERENNIAL RYEGRASS CULTIVARS FOR EACH YEAR GROWN (continued) IN THE UNITED STATES AND CANADA 1987-1990 DATA TURFGRASS QUALITY RATINGS 1-9; 9=IDEAL TURF NAME 1987MEAN 1988MEAN 1989MEAN 1990MEAN 1987-90 MEAN BARRY 5.5 5.5 5.6 4.5 5.5 DIPLOMAT 5.7 5.5 5.5 3.6 5.5 NK 80389 5.6 5.5 5.3 4.1 5.5 DEL 946 5.5 5.5 5.6 4.3 5.5 OVATION 5.5 5.5 5.5 3.7 5.5 RONJA 5.6 5.6 5.5 3.8 5.5 BRENDA 5.6 5.5 5.5 4.4 5.5 VINTAGE 2DF 5.5 5.5 5.5 3.6 5.5 ISI-K2 (DILLION) 5.6 5.5 5.4 3.7 5.4 REGENCY 5.5 5.5 5.4 3.6 5.4 SHERIFF 5.5 5.5 5.4 3.8 5.4 DELRAY 5.3 5.4 5.5 4.5 5.4 MANHATTAN 5.5 5.4 5.2 3.3 5.3 PAVO 5.4 5.3 5.3 2.8 5.3 COWBOY 5.5 5.4 5.3 4.2 5.3 J207 5.3 5.2 5.2 3.2 5.2 J208 5.1 5.2 5.3 3.4 5.2 LINN 3.9 3.9 3.5 1.6 3.8 LSD VALUE 0.2 0.2 0.2 0.2 0.1 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 0.50).