TABLE 2. MEAN TURFGRASS QUALITY RATINGS OF PERENNIAL RYEGRASS CULTIVARS FOR EACH MONTH GROWN AT TWENTY-FIVE LOCATIONS IN THE U. S AND CANADA 1988 DATA TURFGRASS QUALITY RATINGS 1-9; 9=IDEAL TURF: MONTHS 1/ NAME JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC MEAN PST-2PM (SATURN) 6.3 6.8 6.8 6.5 6.5 6.0 6.1 6.2 6.4 6.4 6.1 5.7 6.3 SR 4000 5.7 5.9 6.4 6.2 6.4 6.0 6.0 6.1 6.4 6.3 6.1 5.3 6.2 SR 4100 6.0 6.3 6.2 5.9 6.1 5.9 6.0 6.2 6.4 6.4 6.0 6.0 6.1 PST-2H7 6.2 6.6 6.6 6.3 6.2 6.0 6.0 5.9 6.2 6.3 5.9 6.2 6.1 PST-259 (COMMANDER) 5.8 6.0 6.4 6.0 6.5 6.0 6.0 5.9 6.2 6.1 5.9 6.0 6.1 PICK 600 (FIESTA II) 5.4 6.1 6.3 6.0 6.3 5.9 6.0 5.9 6.1 6.1 6.0 5.3 6.1 PST-M2E 5.8 6.4 6.5 6.0 6.3 6.1 6.0 5.9 6.2 6.2 5.8 5.5 6.1 PICK 647 (RIVIERA) 5.8 5.8 6.4 6.0 6.2 5.9 5.9 6.1 6.1 6.1 5.9 5.7 6.1 REPELL 5.8 6.3 6.0 6.1 6.4 6.0 5.9 5.9 6.1 6.0 5.8 5.3 6.1 PENNANT 5.6 5.7 6.2 5.7 6.1 5.7 5.9 6.2 6.2 6.3 5.9 5.5 6.1 PALMER 5.9 6.3 6.4 6.0 6.0 5.8 5.9 6.2 6.3 6.2 5.8 5.5 6.1 PICK 300 (BLAZER II) 5.7 5.8 5.9 6.1 6.4 5.9 5.9 5.8 6.1 6.1 5.7 6.0 6.0 PST-2HH (CHARGER) 5.4 5.4 5.9 6.2 6.3 5.9 6.0 5.8 5.9 6.1 5.6 5.5 6.0 PST-250 (COMPETITOR) 5.7 6.1 6.4 6.0 6.6 6.0 5.9 5.7 5.9 5.9 5.8 5.8 6.0 OMEGA II 6.2 6.8 6.4 6.0 6.3 5.7 6.1 5.8 6.0 5.9 5.5 5.7 6.0 GATOR 5.6 6.3 6.2 6.0 6.3 5.8 5.6 5.8 5.9 6.1 5.7 5.5 6.0 MANHATTAN II 6.2 6.3 6.2 6.0 6.2 6.0 5.9 5.6 5.9 5.9 5.7 5.7 6.0 PICK 715 5.4 5.8 5.9 5.8 6.1 5.7 5.8 6.0 6.3 6.2 5.8 5.3 5.9 KWS-AL-2 (AQUARIUS) 4.9 5.8 6.2 6.3 6.4 5.8 5.8 5.4 5.7 5.9 5.6 5.2 5.9 ALLAIRE 5.4 5.4 5.8 6.0 6.2 5.7 5.8 5.4 6.0 6.2 5.9 5.8 5.9 PRELUDE 5.7 6.0 6.0 5.7 6.0 5.5 5.8 5.9 6.1 6.1 5.8 5.3 5.9 CITATION II 6.3 6.5 6.4 5.8 6.1 5.8 5.9 5.8 5.9 5.9 5.9 5.7 5.9 PICK 233 (DASHER II) 6.4 6.2 6.2 5.9 6.1 5.6 5.8 6.0 6.0 6.0 6.0 5.7 5.9 GOALIE 5.2 5.5 5.9 5.9 5.6 5.6 5.8 6.1 6.0 6.1 5.6 4.5 5.9 BIRDIE II 6.0 6.3 6.3 5.7 5.8 5.7 5.7 6.0 6.0 5.8 5.7 5.7 5.9 ISI-851 (LINDSAY) 6.2 6.1 6.3 6.0 6.2 5.8 5.8 5.5 5.7 5.9 5.6 5.2 5.9 TARA 6.1 6.3 6.3 5.8 6.1 5.9 5.9 5.6 5.8 5.8 5.4 5.5 5.9 PST-2DD 6.2 6.0 6.0 6.0 6.3 5.7 5.7 5.2 5.9 5.9 5.6 5.8 5.8 PSU-333 5.4 6.3 6.3 5.9 5.8 5.7 5.9 5.7 5.7 5.9 5.5 5.3 5.8 PATRIOT 5.3 6.1 5.8 6.0 6.0 5.7 5.7 5.6 5.7 5.9 5.7 5.5 5.8 BAR LP 410 5.3 6.1 6.0 5.8 6.1 5.7 5.7 5.7 5.8 5.8 5.4 5.2 5.8 RODEO 5.0 5.4 5.8 5.9 6.1 5.9 5.7 5.4 5.8 5.9 5.4 5.2 5.8 CALIENTE 5.4 5.8 5.8 5.6 5.7 5.6 5.8 5.7 5.8 5.8 5.6 5.5 5.8 RUNAWAY 5.3 5.8 6.0 5.9 5.9 5.7 5.6 5.5 5.6 5.8 5.6 5.3 5.8 RANGER 5.2 5.9 6.0 5.6 6.0 5.7 5.7 5.4 5.7 5.6 5.6 5.2 5.7 PSU-222 5.6 6.3 6.1 5.6 5.9 5.8 5.7 5.5 5.6 5.6 5.3 5.0 5.7 BELLE 5.0 5.8 6.0 5.8 5.8 5.5 5.7 5.8 5.6 5.8 5.7 5.0 5.7 DERBY 5.0 5.5 5.9 5.7 5.7 5.5 5.7 5.7 5.6 5.8 5.5 5.3 5.7 ACROBAT 5.6 6.0 5.9 5.8 6.0 5.4 5.5 5.4 5.6 5.6 5.5 5.2 5.6 SR 4031 5.4 6.0 6.0 5.6 5.7 5.4 5.7 5.5 5.8 5.8 5.4 5.5 5.6 TABLE 2. MEAN TURFGRASS QUALITY RATINGS OF PERENNIAL RYEGRASS CULTIVARS FOR (continued) EACH MONTH GROWN AT TWENTY-FIVE LOCATIONS IN THE U. S AND CANADA 1988 DATA TURFGRASS QUALITY RATINGS 1-9; 9=IDEAL TURF: MONTHS NAME JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC MEAN PENNFINE 5.2 5.7 5.8 5.4 5.5 5.4 5.7 5.7 5.6 5.7 5.1 4.7 5.6 BAR LP 454 5.1 5.7 5.8 5.3 5.9 5.6 5.6 5.3 5.6 5.5 5.1 5.2 5.6 246 6.1 6.3 6.0 6.0 5.6 5.0 5.3 5.4 5.8 5.8 5.8 6.0 5.6 REGAL 5.4 5.8 5.9 5.6 5.6 5.3 5.7 5.6 5.7 5.6 5.4 5.3 5.6 RONJA 5.3 5.6 5.5 5.4 6.0 5.9 5.4 5.1 5.5 5.8 5.4 5.7 5.6 RIVAL 4.3 5.5 5.5 5.4 5.9 5.6 5.5 5.5 5.6 5.6 5.1 5.2 5.6 MOM LP 763 4.9 5.8 5.8 5.3 5.6 5.5 5.5 5.6 5.7 5.6 5.4 4.8 5.6 OVATION 4.4 5.2 5.2 5.3 5.7 5.4 5.5 5.5 5.7 5.6 5.3 5.0 5.5 YORKTOWN II 5.6 6.1 5.8 5.3 5.8 5.5 5.4 5.4 5.5 5.5 5.5 5.5 5.5 NK 80389 5.6 6.2 5.8 5.5 5.8 5.6 5.6 5.3 5.3 5.4 5.1 5.5 5.5 REGENCY 5.8 5.8 5.8 5.5 5.4 5.2 5.5 5.4 5.7 5.5 5.2 4.7 5.5 ISI-K2 (DILLON) 5.3 5.6 5.7 5.4 5.8 5.5 5.4 5.3 5.5 5.4 5.3 5.3 5.5 DEL 946 5.1 5.8 5.8 5.5 5.4 5.1 5.5 5.7 5.8 5.6 5.1 4.3 5.5 BARRY 5.4 5.8 6.0 5.2 5.8 5.4 5.5 5.2 5.6 5.6 5.4 5.2 5.5 BRENDA 5.4 5.6 6.0 5.6 5.4 5.2 5.5 5.4 5.5 5.5 5.2 5.5 5.5 DIPLOMAT 5.7 6.1 5.9 5.4 5.5 5.3 5.3 5.4 5.6 5.6 5.3 5.2 5.5 SHERIFF 5.2 5.8 5.5 5.4 5.6 5.3 5.5 5.4 5.5 5.5 5.4 5.2 5.5 VINTAGE-2DF 5.8 6.3 6.1 5.2 5.4 5.2 5.5 5.5 5.5 5.4 5.3 5.3 5.5 MANHATTAN 4.9 5.0 5.4 5.5 5.7 5.4 5.3 5.1 5.3 5.4 5.3 5.2 5.4 DELRAY 5.2 5.8 5.7 5.4 5.4 5.2 5.3 5.6 5.7 5.3 4.9 5.0 5.4 COWBOY 5.9 6.1 5.8 5.2 5.2 5.1 5.4 5.5 5.5 5.5 5.2 5.0 5.4 PAVO 5.1 5.6 5.6 5.4 5.6 5.3 5.2 5.0 5.2 5.1 4.6 5.0 5.3 J208 5.1 5.8 5.5 5.1 5.3 5.2 5.2 5.1 5.4 5.4 5.2 5.5 5.2 J207 5.2 5.6 5.6 5.1 5.4 5.1 5.1 5.1 5.1 5.1 4.8 5.2 5.2 LINN 4.1 4.8 4.3 3.7 3.8 3.7 4.0 3.8 3.9 3.9 3.7 4.0 3.9 LSD VALUE 2.0 1.5 0.8 0.6 0.5 0.5 0.6 0.7 0.5 0.5 0.7 1.0 0.4 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).