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Leaf Wetness Update (February 21, 2018)
Last week’s slow moving storm system brought scattered rainfall and greatly elevated humidity for several days. Rainfall totals ranged from 0.01” at North Gila and YAC to 0.10” at Roll. The elevated humidity levels produced a minimum of three consecutive days of leaf wetness (Table 1). The day with the greatest number of hours of wetness was 15 February when all stations reported in excess of 10 hours.

Temperatures near ground level (Table 1) have remained above freezing during the past two weeks. Much cooler air is now in place and will likely produce subfreezing temperatures at ground level in the coming day or so.

Growers and PCAs can monitor data from the Yuma Leaf Wetness Network through the AZMET website located at the following URL: http://128.196.12.122:460/

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To contact Paul Brown go to: pbwown@ag.arizona.edu.
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For questions or comments on any of the topics please contact Marco Pena at the Yuma Agricultural Center.
College of Agriculture, The University of Arizona, Tucson, AZ.


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