Mass transfer from discrete water drops on leaves in a cereal canopy |
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Authors: | D. R. Butler |
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Affiliation: | (1) Principal Microclimatologist, Resource Management Program, International Crops Research Institute for the Semi-Arid Tropics, ICRISAT, 502324 Patancheru P.O., Andhra Pradesh, India |
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Abstract: | The boundary-layer resistance, rd, for water vapour transfer from single drops on a wheat leaf was derived from field measurements of the evaporation rate, drop temperature and air humidity. Parameters are estimated in an equation to calculate rd from drop diameter and wind speed. The relationship between resistance and wind speed is compared with that from other sources, and possible systematic errors in temperature measurements are examined using a model of the drop energy balance.On secondment from Department of Agricultural Sciences, University of Bristol, IACR, Long Ashton Research Station, Long Ashton, Bristol BS18 9AF, U.K. |
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