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        A rain tower and wind tunnel for studying the dispersal of plant pathogens by rain and wind

        Author
        Fitt, Bruce D.L.
        Walklate, P.J.
        McCartney, H. A.
        Bainbridge, A.
        Creighton, N.F.
        Hirst, J.M.
        Lacey, M.E.
        Legg, B.J.
        Attention
        2299/11124
        Abstract
        The rain tower/wind tunnel complex at Rothamsted consists of a rain tower (height 11 m, cross-section 1 m2) linked to the upwind end of a wind tunnel (length 12 m, cross-section 1 m2), which may be operated in either an open or a closed configuration. At the top of the rain tower, water drops with diameters of 2.5 to 5 mm are produced by a drop generator, which can be fitted with different nozzles. Simulated rain with a drop diameter of 1 to 3 mm is produced at a rate of 8 to 12 mm h-1 by a rain generator with an area of 52 × 67 cm. The rain tower may be operated in conjunction with the wind tunnel in an open configuration. The windspeed can be decreased from a maximum of 8 m s-1 by decreasing the speed of the fan. The wind tunnel has its own internal lighting. When the wind tunnel is in a closed configuration, temperature and humidity can be controlled in the range 12 oC (62–80% r.h.) to 35 oC (22–50% r.h.). Data presented illustrate the use of this rain tower/wind tunnel complex to study dispersal of plant pathogen spores by rain-splash or wind.
        Publication date
        1986-12
        Published in
        Annals of Applied Biology
        Published version
        https://doi.org/10.1111/j.1744-7348.1986.tb03224.x
        Other links
        http://hdl.handle.net/2299/11124
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