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Table 71a. N Timing: Turfgrass quality ratings. <br /> TRT 5/18/09 6/15 6/22 6/25 7/2 7/10 7/20 8/6 <br /> URE 6.8 7.8a 7.9a 8.2bc 7.3b 7.0 7.2a 6.6b <br /> UXCU 6.8 7.8a 7.9a 8.6ab 8.1a 6.7 7.Oa 6.8ab <br /> BS 6.7 6.9bc 7.2b 7.8c 7.2b 7.3 7.3a 6.7b <br /> PCU 6.7 6.5c 5.8c 5.7d 6.1c 6.8 7.3a 7.2a <br /> XCU 6.5 7.2b 8.1a 9.Oa 8.4a 6.9 7.4a 6.8ab <br /> CHK 6.7 6.5c 6.Oc 5.8d 5.7c 6.3 5.8b 5.4c <br /> Signif. ns ** ** ** ** ns ** ** <br /> ns and ** =P>0.05 and P<0.01 <br /> Means with the same letter within a column are not significantly different according to Duncan's Multiple <br /> Range Test. <br /> Turfgrass quality ratings based on a 1-9 scale with 9=dark green turf, 1=dead/brown turf, and <br /> 6=minimally acceptable turf. <br /> Table 71b. N Timing: Turfgrass quality ratings. <br /> TRT 8/21/09 9/3 9/18 10/2 <br /> URE 6.4b 6.5ab 6.8b 6.7b <br /> UXCU 6.5b 6.2b 6.4b 6.4b <br /> BS 6.8b 6.7ab 7.2ab 6.8ab <br /> PCU 7.4a 7.Oa 7.7a 7.5a <br /> XCU 6.8b 6.6ab 6.7b 6.5b <br /> CHK 5.6c 5.4c 5.5c 5.3c <br /> Signif ** ** ** ** <br /> ** =P<0.01 <br /> Means with the same letter within a column are not significantly different according to Duncan's Multiple <br /> Range Test. <br /> Turfgrass quality ratings based on a 1-9 scale with 9=dark green turf, 1=dead/brown turf, and <br /> 6=minimally acceptable turf. <br /> 2009 SUMMER BLACKOUT TEST: QUALITY <br /> 6 <br /> URE <br /> 6 f UXCU <br /> 5 BS <br /> Mg <br /> 4 gj -*-PCU <br /> R �FXCU <br /> 3 <br /> EN <br /> 2 <br /> a` h, CHK <br /> RAI <br /> g, I21 <br /> 4 <br /> =01 I ISO <br /> 18-May 15-Jun 22-Jun 25-Jun 2-Jul 10-Jul 20-Jul 6-Aug 21-Aug 3-Sep 18-Sep 2-Oct <br /> Figure 15. N Timing Blackout Test: Overall visual quality from 18 May-2 Oct. 2009. <br /> 90 <br /> 13 - k3 <br />