R. A. St. John and N. E. Christians
This was the third full year of the trial that began in the fall of 1999 with the establishment of 134 cultivars of perennial ryegrass at the Iowa State University Horticulture Research Station. The study was established on an irrigated area that was maintained at a 2-inch mowing height and fertilized with 3 to 4 lb N/1000 ft2/yr. The area received herbicide treatments as required.
The visual quality was evaluated monthly in 2002 from May through October (Table 1). The values listed under each month in Table 1 are the averages of visual quality ratings made on three replicated plots. Visual quality was based on a scale of 9 to 1: 9 = best quality, 6 = lowest acceptable quality, and 1 = worst quality. The yearly average of the monthly data for each cultivar was calculated and is listed in the last column (Mean). The first cultivar listed in Table 1 had the highest average visual quality rating for the entire 2002 season. The cultivars are listed in descending order by average quality. The last row states the LSD (least significant difference), which is a statistical measurement of how widely the datum in each column must vary before they are considered to be different from one another.
Data for genetic color (Gencolor) and leaf texture (Leaftex) were also collected in June 2002. Genetic color was rated using a 9 to 1 scale with 9 = dark and 1 = light green. Leaf texture was assessed with a 9 to 1 scale with 9 = fine and 1 = coarse texture. Spring greenup data were taken in April 2002 and were estimated using a 9 to 1 scale with 9 = green and 1 = dormant turf.
Table 1. The 2002 ratings for the 1999 National Perennial Ryegrass Study.
| -----------------------------Quality----------------------------- | ||||||||||
| Perennial Ryegrass Cultivar | GREENUP | GENCOLOR | LEAFTEX | MAY | JUN | JUL | AUG | SEP | OCT | MEAN |
|---|---|---|---|---|---|---|---|---|---|---|
| --------------------------------------------------------------9-1; 9 Best----------------------------------------------------------- | ||||||||||
| PINNACLE II (BAR 9 B2) | 8.7 | 8.7 | 8.0 | 7.7 | 7.7 | 7.7 | 7.7 | 8.3 | 8.3 | 7.9 |
| ALL STAR2 (CIS-PR-78) | 8.3 | 9.0 | 8.0 | 8.0 | 7.0 | 8.0 | 7.0 | 8.0 | 8.0 | 7.7 |
| CITATION FORE (PST-2BR) | 8.3 | 8.0 | 8.0 | 8.0 | 7.0 | 7.7 | 6.7 | 8.3 | 8.3 | 7.7 |
| GATOR 3 (CIS-PR-85) | 8.0 | 8.3 | 8.0 | 7.7 | 7.0 | 7.3 | 7.7 | 8.3 | 8.0 | 7.7 |
| PST-2M4 | 7.7 | 8.3 | 8.0 | 8.0 | 7.3 | 7.7 | 7.0 | 7.7 | 8.3 | 7.7 |
| ABT-99-4.834 | 8.0 | 8.7 | 8.0 | 8.0 | 7.3 | 7.7 | 7.0 | 7.7 | 7.7 | 7.6 |
| CABO (CIS-PR-80) | 9.0 | 8.0 | 8.0 | 8.7 | 7.3 | 7.0 | 7.3 | 7.7 | 7.3 | 7.6 |
| CIS-PR-84 | 8.0 | 8.3 | 8.0 | 8.0 | 7.3 | 7.3 | 7.0 | 8.0 | 8.0 | 7.6 |
| MACH 1 (ROBERTS-627) | 8.7 | 8.0 | 8.0 | 8.0 | 7.0 | 7.3 | 7.0 | 8.3 | 7.7 | 7.6 |
| PIZZAZZ | 8.0 | 8.0 | 8.0 | 7.7 | 7.0 | 8.0 | 7.3 | 7.7 | 7.7 | 7.6 |
| PST-2LA | 8.0 | 8.0 | 8.0 | 8.0 | 7.0 | 7.7 | 6.7 | 8.0 | 8.0 | 7.6 |
| WILMINGTON | 8.0 | 7.7 | 7.7 | 8.0 | 7.0 | 7.0 | 7.3 | 8.0 | 8.0 | 7.6 |
| ABT-99-4.724 | 8.7 | 7.7 | 8.0 | 8.3 | 7.3 | 7.0 | 7.0 | 7.7 | 7.7 | 7.5 |
| BLAZER IV (PICK MDR) | 8.0 | 7.7 | 8.0 | 7.7 | 7.0 | 7.3 | 7.0 | 8.0 | 8.0 | 7.5 |
| PENNANT II | 7.7 | 7.7 | 8.0 | 7.7 | 7.3 | 7.0 | 7.0 | 8.0 | 8.0 | 7.5 |
| ABT-99-4.560 | 8.0 | 8.0 | 8.0 | 8.0 | 7.7 | 7.7 | 6.7 | 7.0 | 7.3 | 7.4 |
| APPLAUD (PENNINGTON-11301) | 8.7 | 8.0 | 8.0 | 8.0 | 7.0 | 7.0 | 7.0 | 7.7 | 7.7 | 7.4 |
| PROSPORT (AG-P981) | 8.0 | 8.0 | 7.7 | 8.0 | 7.3 | 7.3 | 7.0 | 7.3 | 7.3 | 7.4 |
| RACER II (PICK RC2) | 8.0 | 7.7 | 8.0 | 8.0 | 7.7 | 7.0 | 7.0 | 7.3 | 7.3 | 7.4 |
| SEVILLE II | 8.3 | 7.3 | 8.0 | 8.3 | 7.0 | 6.7 | 7.0 | 8.0 | 7.7 | 7.4 |
| ABT-99-4.965 | 8.3 | 8.0 | 8.0 | 7.7 | 6.3 | 7.3 | 7.0 | 7.7 | 7.7 | 7.3 |
| AMAZING (B1) | 8.7 | 8.7 | 8.0 | 8.0 | 6.3 | 7.3 | 7.0 | 8.0 | 7.3 | 7.3 |
| BARLENNIUM | 8.3 | 7.0 | 8.0 | 8.0 | 7.0 | 7.0 | 6.7 | 7.7 | 7.3 | 7.3 |
| CHARISMATIC (LTP 98-501) | 8.3 | 7.3 | 8.0 | 8.3 | 7.3 | 6.7 | 7.0 | 7.3 | 7.3 | 7.3 |
| CHURCHILL | 8.3 | 7.3 | 8.0 | 8.0 | 7.0 | 7.0 | 7.0 | 7.7 | 7.3 | 7.3 |
| COURAGE (MB 410) | 8.0 | 7.7 | 8.0 | 8.0 | 7.3 | 6.7 | 6.7 | 7.3 | 7.7 | 7.3 |
| ELFKIN | 7.7 | 7.3 | 8.0 | 8.0 | 7.7 | 6.7 | 6.7 | 7.3 | 7.3 | 7.3 |
| HAWKEYE (SRX 4RHT) | 8.3 | 7.7 | 8.0 | 8.0 | 7.7 | 6.0 | 7.3 | 7.7 | 7.3 | 7.3 |
| ICON (MB 414) | 8.0 | 7.7 | 8.0 | 7.7 | 6.7 | 7.0 | 7.0 | 8.0 | 7.7 | 7.3 |
| INSPIRE (R8000) | 8.7 | 7.7 | 8.0 | 7.7 | 7.3 | 6.7 | 6.7 | 8.0 | 7.3 | 7.3 |
| MANHATTAN 4 (PST-2CRL) | 8.3 | 7.0 | 7.7 | 8.3 | 7.0 | 6.3 | 7.0 | 7.7 | 7.3 | 7.3 |
| PALMER III | 7.7 | 7.7 | 8.0 | 7.7 | 7.3 | 7.0 | 7.0 | 7.3 | 7.3 | 7.3 |
| PHANTOM | 7.7 | 7.3 | 8.0 | 8.0 | 7.0 | 7.0 | 7.0 | 7.3 | 7.3 | 7.3 |
| PREMIER II | 8.3 | 7.7 | 8.0 | 7.7 | 7.3 | 7.0 | 7.0 | 7.0 | 7.7 | 7.3 |
| PST-2CRR | 8.0 | 8.0 | 8.0 | 7.7 | 7.0 | 7.3 | 7.0 | 7.3 | 7.3 | 7.3 |
| RACER | 8.0 | 7.0 | 7.7 | 8.0 | 7.3 | 6.7 | 7.0 | 7.3 | 7.3 | 7.3 |
| SR 4220 (SRX 4801) | 8.3 | 7.7 | 8.0 | 8.0 | 7.0 | 6.7 | 7.0 | 7.7 | 7.3 | 7.3 |
| SR 4420 (SRX 4820) | 8.0 | 7.7 | 8.0 | 7.7 | 7.3 | 7.0 | 6.7 | 7.7 | 7.7 | 7.3 |
| ALLSPORT | 7.7 | 8.0 | 8.0 | 7.7 | 7.0 | 6.7 | 7.0 | 7.3 | 7.3 | 7.2 |
| APR 1231 | 7.7 | 7.7 | 8.0 | 8.0 | 7.3 | 6.7 | 7.0 | 7.0 | 7.0 | 7.2 |
| ASCEND | 8.0 | 7.3 | 8.0 | 8.0 | 7.0 | 6.7 | 6.7 | 7.3 | 7.3 | 7.2 |
| BRIGHTSTAR II | 8.0 | 8.0 | 8.0 | 8.0 | 6.7 | 6.7 | 7.0 | 7.7 | 7.3 | 7.2 |
| BRIGHTSTAR SLT (PST-2A6B) | 7.7 | 7.7 | 8.0 | 7.3 | 7.3 | 7.0 | 6.7 | 7.7 | 7.3 | 7.2 |
| GALLERY (MB 412) | 8.7 | 7.0 | 7.7 | 8.3 | 6.7 | 7.0 | 7.0 | 7.0 | 7.0 | 7.2 |
| GRAND SLAM (PST-2L96) | 8.0 | 7.7 | 8.0 | 7.7 | 7.3 | 6.7 | 7.0 | 7.3 | 7.0 | 7.2 |
| LPR 98-144 | 7.3 | 7.3 | 8.0 | 7.3 | 7.0 | 7.0 | 6.7 | 7.3 | 8.0 | 7.2 |
| LTP-ME | 8.0 | 7.7 | 7.7 | 7.3 | 6.7 | 7.0 | 7.0 | 7.7 | 7.3 | 7.2 |
| MANHATTAN 3 | 7.3 | 7.3 | 8.0 | 7.3 | 7.3 | 7.0 | 6.7 | 7.3 | 7.3 | 7.2 |
| MDP | 8.0 | 7.3 | 8.0 | 7.7 | 7.0 | 6.7 | 7.0 | 7.7 | 7.0 | 7.2 |
| PARAGON | 8.3 | 7.7 | 8.0 | 8.0 | 7.3 | 6.3 | 7.0 | 7.3 | 7.3 | 7.2 |
| PENTIUM (NJ-6401) | 7.7 | 7.7 | 8.0 | 7.3 | 7.0 | 7.0 | 6.7 | 7.7 | 7.7 | 7.2 |
| PICK PRNGS | 8.3 | 7.3 | 8.0 | 8.0 | 7.0 | 6.7 | 7.0 | 7.3 | 7.3 | 7.2 |
| PLEASURE XL | 7.3 | 7.3 | 8.0 | 7.3 | 7.3 | 6.7 | 7.0 | 7.3 | 7.3 | 7.2 |
| PST-2RT | 7.7 | 8.0 | 8.0 | 7.7 | 7.3 | 6.7 | 6.7 | 7.3 | 7.7 | 7.2 |
| SKYHAWK | 8.7 | 7.3 | 8.0 | 8.0 | 7.0 | 6.3 | 7.0 | 7.3 | 7.3 | 7.2 |
| ABT-99-4.115 | 8.0 | 7.3 | 8.0 | 8.0 | 7.3 | 6.3 | 6.7 | 7.0 | 7.0 | 7.1 |
| ABT-99-4.464 | 8.0 | 7.0 | 8.0 | 8.0 | 7.0 | 6.3 | 6.7 | 7.3 | 7.3 | 7.1 |
| ABT-99-4.625 | 8.0 | 7.3 | 8.0 | 8.0 | 7.0 | 6.7 | 6.7 | 7.0 | 7.0 | 7.1 |
| APR 776 | 7.3 | 7.0 | 8.0 | 7.7 | 7.0 | 6.3 | 6.7 | 7.3 | 7.3 | 7.1 |
| CATALINA | 7.3 | 7.7 | 8.0 | 7.3 | 6.3 | 7.3 | 6.7 | 7.7 | 7.3 | 7.1 |
| DLF-LDD | 8.0 | 7.7 | 7.7 | 8.0 | 6.7 | 6.7 | 7.0 | 7.0 | 7.3 | 7.1 |
| EPD | 8.3 | 7.3 | 8.0 | 7.3 | 7.3 | 6.7 | 7.0 | 7.0 | 7.0 | 7.1 |
| HEADSTART | 7.7 | 7.3 | 8.0 | 7.7 | 7.0 | 6.3 | 6.7 | 7.3 | 7.3 | 7.1 |
| JET | 8.3 | 7.3 | 8.0 | 7.7 | 7.7 | 5.7 | 6.7 | 7.7 | 7.0 | 7.1 |
| JR-128 | 7.7 | 7.3 | 8.0 | 7.7 | 7.0 | 6.3 | 7.0 | 7.3 | 7.3 | 7.1 |
| KOKOMO (CIS-PR-69) | 8.0 | 7.3 | 8.0 | 7.7 | 7.3 | 6.3 | 6.7 | 7.3 | 7.0 | 7.1 |
| MONTEREY II (JR-187) | 7.7 | 8.0 | 8.0 | 7.7 | 7.7 | 6.3 | 6.3 | 7.3 | 7.3 | 7.1 |
| MP107 | 8.3 | 7.7 | 8.0 | 8.3 | 7.0 | 6.7 | 6.7 | 7.0 | 7.0 | 7.1 |
| MP88 | 7.3 | 7.0 | 8.0 | 7.7 | 7.0 | 6.3 | 6.7 | 7.3 | 7.3 | 7.1 |
| PACESETTER (6011) | 7.7 | 7.3 | 8.0 | 7.3 | 7.3 | 6.3 | 6.7 | 7.3 | 7.3 | 7.1 |
| PANTHER | 8.0 | 8.0 | 8.0 | 7.7 | 6.7 | 7.0 | 6.7 | 7.3 | 7.3 | 7.1 |
| PST-2SBE | 8.3 | 7.7 | 8.0 | 8.0 | 7.0 | 6.7 | 7.0 | 7.3 | 6.7 | 7.1 |
| SPLENDID (MB 411) | 8.3 | 8.0 | 8.0 | 8.3 | 6.3 | 7.0 | 6.7 | 7.0 | 7.0 | 7.1 |
| STELLAR (CIS-PR-72) | 8.3 | 7.7 | 8.0 | 7.7 | 7.0 | 6.7 | 6.7 | 7.3 | 7.3 | 7.1 |
| SUMMERSET (MB 413) | 8.7 | 7.7 | 8.0 | 8.0 | 7.3 | 6.0 | 6.7 | 7.3 | 7.3 | 7.1 |
| SUPERSTAR (EP57) | 8.0 | 6.7 | 7.3 | 8.0 | 6.3 | 7.0 | 6.7 | 7.3 | 7.0 | 7.1 |
| TERRADYNE (A5C) | 8.7 | 8.0 | 8.0 | 8.0 | 6.7 | 6.7 | 7.0 | 7.3 | 7.0 | 7.1 |
| UT-1000 (ABT-99-4.709) | 8.7 | 7.0 | 8.0 | 8.3 | 7.0 | 5.7 | 7.0 | 7.3 | 7.3 | 7.1 |
| ABT-99-4.600 | 7.3 | 8.0 | 8.0 | 7.7 | 7.0 | 6.7 | 7.0 | 6.7 | 7.0 | 7.0 |
| ABT-99-4.721 | 8.0 | 7.0 | 8.0 | 8.0 | 7.0 | 6.0 | 7.0 | 7.0 | 7.0 | 7.0 |
| AFFIRMED | 8.0 | 7.7 | 8.0 | 7.3 | 7.0 | 6.3 | 6.7 | 7.3 | 7.3 | 7.0 |
| APR 1237 | 7.3 | 7.0 | 8.0 | 7.3 | 7.3 | 6.7 | 6.7 | 7.0 | 7.0 | 7.0 |
| CALYPSO II | 8.3 | 7.3 | 8.0 | 8.3 | 7.3 | 6.3 | 6.3 | 6.7 | 7.0 | 7.0 |
| CAS-LP84 | 8.0 | 7.3 | 8.0 | 8.3 | 7.0 | 6.3 | 6.3 | 7.0 | 7.0 | 7.0 |
| CATALINA II (PST-CATS) | 8.0 | 7.7 | 8.0 | 8.3 | 6.7 | 6.0 | 7.0 | 7.0 | 7.0 | 7.0 |
| FIESTA 3 | 7.7 | 7.7 | 8.0 | 7.0 | 7.0 | 6.3 | 7.0 | 7.3 | 7.3 | 7.0 |
| MP103 | 8.0 | 7.0 | 7.5 | 7.0 | 7.0 | 6.5 | 6.7 | 7.5 | 7.5 | 7.0 |
| PARADIGM (APR 1236) | 7.7 | 7.3 | 8.0 | 7.3 | 7.0 | 7.0 | 6.7 | 7.0 | 7.0 | 7.0 |
| PICK PR QH-97 | 8.3 | 7.3 | 8.0 | 8.0 | 6.7 | 5.7 | 7.0 | 7.3 | 7.3 | 7.0 |
| PROMISE | 7.7 | 7.0 | 8.0 | 7.3 | 6.7 | 6.7 | 7.0 | 7.3 | 7.0 | 7.0 |
| PST-2JH | 7.7 | 7.3 | 8.0 | 7.7 | 7.3 | 6.3 | 6.3 | 7.3 | 7.0 | 7.0 |
| RADIANT | 8.3 | 7.0 | 8.0 | 8.0 | 6.3 | 6.0 | 6.7 | 7.7 | 7.3 | 7.0 |
| ADMIRE (JR-151) | 7.7 | 6.7 | 8.0 | 8.0 | 7.3 | 6.3 | 6.3 | 7.0 | 6.7 | 6.9 |
| APR 1232 | 7.3 | 7.0 | 8.0 | 7.3 | 6.7 | 6.7 | 6.7 | 6.7 | 7.7 | 6.9 |
| APR 1233 | 7.3 | 7.3 | 8.0 | 7.0 | 7.3 | 6.7 | 6.3 | 7.0 | 7.0 | 6.9 |
| APR 1234 | 7.0 | 7.7 | 8.0 | 7.0 | 7.3 | 6.7 | 6.7 | 7.0 | 7.0 | 6.9 |
| CHARGER II | 8.0 | 8.0 | 8.0 | 7.0 | 6.3 | 7.0 | 6.7 | 7.0 | 7.3 | 6.9 |
| CIS-PR-75 | 8.0 | 7.7 | 8.0 | 8.0 | 6.0 | 6.0 | 6.7 | 7.7 | 7.0 | 6.9 |
| DIVINE | 8.3 | 7.0 | 8.0 | 8.0 | 7.0 | 5.7 | 6.3 | 7.3 | 7.3 | 6.9 |
| DP LP-1 | 7.3 | 7.3 | 7.7 | 7.0 | 7.0 | 6.7 | 6.3 | 7.3 | 7.3 | 6.9 |
| EXACTA | 8.3 | 7.0 | 8.0 | 8.0 | 6.7 | 6.3 | 6.3 | 7.0 | 7.0 | 6.9 |
| MAJESTY | 7.7 | 7.0 | 7.3 | 7.3 | 7.3 | 6.0 | 6.7 | 7.3 | 7.0 | 6.9 |
| PREMIER | 7.0 | 7.0 | 8.0 | 7.7 | 7.0 | 6.0 | 6.3 | 7.3 | 7.0 | 6.9 |
| SALINAS (PST-2SLX) | 8.0 | 7.3 | 7.3 | 8.0 | 7.0 | 5.7 | 7.0 | 7.0 | 7.0 | 6.9 |
| ABT-99-4.339 | 7.3 | 7.3 | 8.0 | 7.7 | 7.3 | 6.0 | 6.3 | 6.7 | 6.7 | 6.8 |
| ABT-99-4.815 | 8.0 | 7.0 | 8.0 | 7.7 | 7.0 | 6.3 | 6.3 | 7.0 | 6.7 | 6.8 |
| BUCCANEER | 7.0 | 6.7 | 8.0 | 7.0 | 7.0 | 5.7 | 6.3 | 7.3 | 7.3 | 6.8 |
| BY-100 | 7.0 | 7.0 | 8.0 | 7.3 | 7.0 | 6.0 | 6.3 | 7.0 | 7.3 | 6.8 |
| CATHEDRAL II | 7.7 | 8.0 | 8.0 | 7.7 | 7.3 | 6.0 | 6.0 | 7.0 | 7.0 | 6.8 |
| LINE DRIVE | 7.7 | 7.0 | 8.0 | 7.3 | 7.0 | 6.3 | 6.3 | 7.0 | 7.0 | 6.8 |
| LPR 98-143 | 7.0 | 7.0 | 6.7 | 7.0 | 7.3 | 6.3 | 6.0 | 7.0 | 7.0 | 6.8 |
| NEXUS | 8.7 | 7.3 | 7.7 | 8.0 | 6.7 | 6.3 | 6.3 | 7.0 | 6.7 | 6.8 |
| PICK PR B-97 | 8.0 | 7.3 | 8.0 | 7.7 | 6.7 | 5.7 | 6.7 | 7.3 | 7.0 | 6.8 |
| PROWLER (APR 777) | 7.0 | 7.0 | 7.7 | 7.3 | 7.0 | 7.0 | 5.7 | 7.0 | 7.0 | 6.8 |
| SR 4500 | 7.7 | 7.3 | 8.0 | 7.7 | 7.3 | 6.0 | 6.3 | 7.0 | 6.7 | 6.8 |
| AFFINITY | 7.0 | 7.3 | 7.7 | 7.0 | 7.0 | 7.0 | 6.3 | 6.3 | 6.7 | 6.7 |
| APR 1235 | 7.0 | 7.7 | 7.7 | 6.7 | 7.0 | 7.0 | 6.3 | 6.7 | 6.7 | 6.7 |
| DP 17-9069 | 7.0 | 7.0 | 8.0 | 6.7 | 7.3 | 6.7 | 6.0 | 6.7 | 6.7 | 6.7 |
| EP53 | 8.0 | 7.3 | 8.0 | 7.3 | 6.7 | 6.0 | 7.0 | 6.7 | 6.7 | 6.7 |
| EXTREME (JR-317) | 7.7 | 7.0 | 8.0 | 7.3 | 7.0 | 5.0 | 6.7 | 7.3 | 6.7 | 6.7 |
| MEPY | 7.3 | 7.0 | 8.0 | 7.0 | 6.3 | 6.0 | 6.7 | 7.3 | 7.0 | 6.7 |
| PASSPORT | 7.7 | 7.3 | 8.0 | 7.3 | 7.0 | 6.0 | 6.3 | 7.0 | 6.7 | 6.7 |
| PICK EX2 | 7.0 | 7.3 | 8.0 | 7.3 | 7.3 | 5.7 | 6.3 | 6.7 | 6.7 | 6.7 |
| PICK PR 1-94 | 7.0 | 7.0 | 8.0 | 7.3 | 7.0 | 5.7 | 6.3 | 7.0 | 7.0 | 6.7 |
| SECRETARIAT | 7.0 | 7.0 | 8.0 | 7.0 | 6.7 | 6.0 | 6.3 | 7.0 | 7.0 | 6.7 |
| SRX 4120 | 7.3 | 7.3 | 8.0 | 7.0 | 7.0 | 6.0 | 5.7 | 7.0 | 7.3 | 6.7 |
| WVPB-R-82 | 6.0 | 7.3 | 8.0 | 6.7 | 7.3 | 6.7 | 5.7 | 6.7 | 7.0 | 6.7 |
| KOOS R-71 | 7.0 | 7.0 | 7.7 | 6.3 | 6.7 | 6.3 | 6.0 | 6.7 | 7.7 | 6.6 |
| WVPB-R-84 | 7.3 | 7.0 | 8.0 | 7.3 | 7.3 | 6.0 | 6.0 | 6.3 | 6.3 | 6.6 |
| EDGE | 7.0 | 6.7 | 8.0 | 6.7 | 7.0 | 5.7 | 5.7 | 6.7 | 6.3 | 6.3 |
| YATSUGREEN | 7.3 | 6.7 | 7.3 | 6.7 | 7.7 | 6.0 | 5.3 | 6.0 | 6.0 | 6.3 |
| DP 17-9391 | 6.3 | 7.3 | 7.3 | 5.7 | 6.7 | 6.7 | 5.3 | 6.3 | 6.3 | 6.2 |
| DP 17-9496 | 6.3 | 6.0 | 7.0 | 6.0 | 7.7 | 6.0 | 5.0 | 5.3 | 6.0 | 6.0 |
| LINN | 6.0 | 6.0 | 6.0 | 3.0 | 5.7 | 5.7 | 4.7 | 5.3 | 7.0 | 5.2 |
| LSD | 1.0 | 1.1 | 0.5 | 0.9 | 2.4 | 1.7 | 0.9 | 1.0 | 1.1 | 0.6 |
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ISU Turfgrass:2003 Turfgrass Report | College of Agriculture |
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