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A factor that may contribute to shrub mortality is the relatively <br />• deep Iayer of excelsior blanket on the top plots. The excelsior may <br />interfere rith Water movement into the soil when precipitation is light. <br />3.5.2 Local Transplants <br />All local transplants died during 1979. The prolonged summer <br />droughts experienced in both 1978 and 1979 probably contributed to this <br />result. The poor performance by field transplants suggests that summer <br />irrigation of transplants may be necessary to make this a cost-effective <br />rehabilitation method. <br /> <br /> <br />43 <br />