TABLE 21. PERCENT GREEN COVER RATINGS OF PERENNIAL RYEGRASS CULTIVARS IN THE 1/ 2010 NATIONAL PERENNIAL RYEGRASS TEST AT BLACKSBURG (DROUGHT STUDY), VA 2/ 3/ 4/ 2011 DATA IRRIGATION WITHHELD IRRIGATION WITHHELD IRRIGATION APPLIED NAME 6_27 7_6 7_11 7_13 7_24 8_6 9_6 IS-PR 489 84.3 48.0 34.0 29.3 10.0 48.3 81.3 PST-2DR9 84.0 49.3 43.0 38.7 27.3 44.7 80.7 SIDEWAYS (PSRX-S84) 85.3 48.3 39.0 32.0 17.7 50.7 80.0 SRX-4RHD 81.7 39.0 30.3 28.0 18.3 54.0 78.0 PPG-PR 121 84.3 39.3 27.0 21.3 8.3 44.3 76.7 SRX-4MSH 80.3 38.0 29.7 26.7 17.0 36.7 76.7 SR 4650 (PSRX-3701) 89.3 57.7 51.3 44.0 28.7 47.7 76.3 DLF LGD-3022 81.7 36.3 25.3 21.0 9.3 55.7 75.7 PST-2NKM 84.3 47.0 36.7 30.7 18.0 38.0 75.0 PST-2BNS 86.3 44.7 33.3 30.7 18.7 56.3 74.3 LTP-PR 135 85.3 40.0 26.3 21.7 5.3 50.7 73.0 IS-PR 469 81.0 39.0 26.7 22.7 12.0 36.3 72.0 BONNEVILLE 80.0 42.3 33.7 30.3 20.3 45.3 70.7 PPG-PR 128 80.0 34.7 22.3 19.0 9.0 48.0 70.7 IS-PR 488 87.0 52.3 44.7 39.0 25.3 50.7 70.0 P02 78.0 41.3 34.3 30.3 18.3 42.3 70.0 PPG-PR 134 84.3 44.3 34.0 31.3 20.0 56.0 70.0 PST-2K9 84.3 48.3 45.0 41.7 35.0 49.7 70.0 APR 2445 79.0 36.3 29.3 25.7 22.0 58.7 69.7 IS-PR 491 84.7 48.3 37.7 33.0 19.7 37.0 69.7 IS-PR 409 81.3 39.0 30.3 26.3 16.0 34.0 69.3 PPG-PR 133 84.3 41.3 28.7 24.7 11.0 43.7 69.3 IS-PR 463 82.3 36.7 30.0 26.7 14.0 38.7 69.0 GO-PR60 76.0 34.0 27.3 24.0 19.3 39.0 68.7 PSRX-4CAGL 79.0 37.0 24.7 21.3 8.7 30.3 68.3 UNO 82.3 43.0 37.0 32.0 21.0 47.3 68.3 DLF LGD-3026 81.3 35.3 28.7 26.7 16.3 47.3 67.7 PICK 4DFHM 78.3 38.0 29.0 25.3 15.0 45.3 67.7 JR-178 84.7 41.7 27.0 22.0 10.7 37.7 67.0 IS-PR 492 85.0 43.3 27.0 22.3 8.7 33.3 66.7 ISG-30 74.3 32.3 25.0 20.0 11.0 36.0 66.3 PST-2MG7 77.3 43.3 38.0 33.3 25.3 37.7 65.7 PIZZAZZ 2 GLR (PR 909) 80.0 33.0 22.0 20.0 7.0 51.3 65.0 CL 11601 84.7 48.3 42.7 38.0 23.3 45.7 64.7 PPG-PR 164 86.7 48.3 37.0 31.3 16.0 52.3 64.7 DOMINATOR (PST-2AG4) 80.7 36.3 28.7 23.7 15.0 31.0 63.0 S85 76.0 32.3 27.0 24.7 20.7 48.3 61.3 OCTANE 85.3 43.7 36.0 33.3 18.0 44.3 61.0 BAR LP 10969 84.7 49.7 42.7 39.7 25.0 42.7 60.7 SOX FAN (GM3) 84.3 41.7 33.3 28.0 16.0 39.3 60.7 PRX-4GM1 79.7 38.3 28.3 23.7 14.0 29.0 60.0 RINOVO 82.7 45.7 36.7 32.7 19.7 38.3 60.0 PPG-PR 165 85.3 48.3 39.0 36.0 26.3 39.0 59.7 JR-192 82.3 42.3 29.3 22.3 9.7 42.7 59.3 GO-DHS 75.0 30.3 24.3 21.0 14.7 45.3 58.7 BAR LP 10970 77.7 37.7 27.3 24.3 14.7 34.7 58.3 ISG-31 73.7 28.0 19.3 15.7 8.3 33.0 58.3 LTP-RAE 82.7 42.7 33.0 28.3 18.7 42.0 58.0 TABLE 21. PERCENT GREEN COVER RATINGS OF PERENNIAL RYEGRASS CULTIVARS IN THE 1/ (CONT'D) 2010 NATIONAL PERENNIAL RYEGRASS TEST AT BLACKSBURG (DROUGHT STUDY), VA 2/ 3/ 4/ 2011 DATA IRRIGATION WITHHELD IRRIGATION WITHHELD IRRIGATION APPLIED NAME 6_27 7_6 7_11 7_13 7_24 8_6 9_6 PPG-PR 138 75.3 31.3 21.3 19.3 13.0 30.3 57.7 PST-2ACR 74.7 27.3 20.0 18.0 7.7 36.3 57.7 MACH I 71.0 25.0 20.7 17.3 9.7 27.7 57.3 PPG-PR 143 79.3 36.0 24.7 21.7 9.0 38.0 56.7 RAD-PR62 80.0 41.0 34.3 28.0 17.7 39.7 56.7 PST-204D 81.0 44.7 35.3 30.7 18.0 44.0 56.0 PALMER V 83.0 39.3 31.0 29.3 22.3 38.3 55.3 CL 307 83.3 36.7 25.0 21.7 5.7 41.7 55.0 CS-PR66 79.0 32.3 20.3 15.7 6.7 28.3 55.0 ISG-36 78.7 33.0 26.0 22.3 13.0 32.7 54.3 FIESTA 4 74.0 19.0 10.0 8.0 2.0 27.3 52.7 IS-PR 479 76.3 28.3 18.7 14.7 8.3 29.0 52.3 GO-G37 75.0 28.0 19.7 16.7 9.3 40.0 52.0 PANGEA GLR (CL 11701) 79.0 39.7 33.7 29.7 19.0 40.3 52.0 INSIGHT 87.0 39.0 29.7 27.0 16.7 46.3 50.0 RIO VISTA 81.0 25.0 13.7 12.7 4.3 36.7 50.0 APR 2036 80.0 37.0 26.0 24.7 14.3 43.3 49.7 IS-PR 487 84.3 47.3 38.3 31.0 16.0 39.3 49.0 PPG-PR 137 78.0 30.0 21.0 18.0 4.7 39.0 48.7 PPG-PR 140 80.3 44.7 36.0 35.3 23.0 39.7 48.0 ALLANTE 79.3 27.0 19.0 17.3 10.0 37.0 47.3 PST-2MAGS 75.0 23.7 19.7 16.7 9.7 38.3 47.0 SIENNA 89.3 56.3 49.0 47.0 37.0 46.7 46.7 CST 77.7 23.0 11.3 9.3 2.7 19.0 45.0 PST-2TQL 76.7 36.3 29.7 25.7 18.0 33.0 44.7 CS-20 77.7 31.7 22.0 18.3 10.3 36.0 43.7 LINN 80.7 28.3 21.0 20.0 8.3 46.3 43.7 2NJK 75.3 43.0 39.0 38.0 35.0 44.7 43.3 BRIGHTSTAR SLT 82.0 40.0 29.7 27.0 21.0 34.3 43.3 BAR LP 10972 82.0 43.7 38.7 35.3 22.3 32.0 43.0 HAVEN (APR 2038) 83.3 41.0 32.0 26.3 11.7 28.7 41.7 PPG-PR 136 77.0 26.0 15.0 13.3 6.3 23.3 41.0 APR 2320 78.3 33.7 28.0 25.3 14.3 32.7 40.3 A-35 74.7 24.3 17.0 13.3 7.3 29.3 38.7 PINNACLE 88.0 53.7 38.0 31.3 18.7 41.7 38.7 BAR LP 7608 77.7 25.3 18.3 16.3 6.0 57.7 37.3 DLF LGT 4182 73.3 32.0 29.0 26.0 19.7 38.7 37.0 PPG-PR 142 79.3 33.7 22.7 19.3 11.3 20.0 33.3 PICK 10401 77.3 20.3 14.7 12.0 1.0 13.7 23.3 RAD-PR55R 73.7 26.3 21.0 18.0 10.0 18.7 23.3 LSD VALUE 10.2 27.6 36.3 34.5 33.6 59.5 58.7 C.V. (%) 6.2 30.1 43.0 46.3 74.2 38.3 33.7 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. 3/ DROUGHT WAS IMPOSED USING MOVEABLE RAINOUT SHELTERS TO RESTRICT RAINFALL AND ALSO BY WITHHOLDING IRRIGATION. 4/ DATA WAS COLLECTED USING A DIGITAL CAMERA WITH LIGHT BOX AND IMAGES WERE ANALYZED USING SIGMASCAN SOFTWARE. TABLE A. 2011 LOCATIONS, SITE DESCRIPTIONS AND MANAGEMENT PRACTICES IN THE 2010 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 VA3 - - - - - - - -