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� - zo • I� <br /> Both PCU and BS provided acceptable turf quality of comparable 150-d periods. Initial responses <br /> were considerably slower, 32 DAT for PCU compared to BS where quality was deemed acceptable 9 <br /> DAT,however, weighed against other SRNS, PCU stimulated superior quality ratings (P<0.05) for a <br /> large proportion of this cycle(Table 55). The data also indicates that all SRNS tested would be <br /> capable of sustaining adequate turf quality for the 120-d fertilizer `black out' period imposed by <br /> certain local legislative bodies. Both PCU and BS at this rate provided adequate turf quality for an <br /> extra 30-d period, denoting the potential to reduce application rates to provide sufficient turf quality <br /> for enforced black outs. <br /> Excerpt from page 82: <br /> The preliminary data suggest that both BS and PCU applied before summer fertilizer"black out" <br /> periods at 147 kg N ha-1 may have limited environmental implications. Both sources resulted in less <br /> than 0.5%of applied N leached and produced good quality St. Augustinegrass for durations in excess <br /> of the 120-d``blackout'period. <br /> See also graphs on pages 90-91. <br />