Ventilation Required to Entrain Small Particles from Leaves | Zendy

Donald E. Aylor | Zendy; J.Y. Parlange | Zendy

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Ventilation Required to Entrain Small Particles from Leaves

Author(s) -

Donald E. Aylor,

J.Y. Parlange

Publication year - 1975

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.56.1.97

Subject(s) - spore , wind speed , atmospheric sciences , canopy , meteorology , environmental science , particle (ecology) , wind direction , boundary layer , ventilation (architecture) , botany , biology , mechanics , physics , ecology

Particles are blown from leaves when the wind at the height of the particles exceeds a minimum which is about 5 m/sec for some fungal spores. In the moderate winds typical within a canopy of leaves, the minimum is attained at spore height during brief changes in wind or puffs before the boundary layer grows to particle height. The requisite change in speed to remove spores occurs over a sizeable area only when the speed changes abruptly in a short distance in the direction of the wind.

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