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The influence of leaf surface roughness on the spreading of oil spray drops
Author(s) -
BOIZE L.,
GUDIN C.,
PURDUE G.
Publication year - 1976
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1976.tb01749.x
Subject(s) - surface finish , wax , cuticle (hair) , materials science , surface roughness , epicuticular wax , composite material , spray characteristics , morphology (biology) , botany , biology , anatomy , physics , genetics , spray nozzle , nozzle , thermodynamics
SUMMARY The effect of surface roughness of leaves on the retention and spreading of oil drops is considered. Three types of roughness have been recognized. Leaf hairs and protruding or recessed veins underlying the cuticle constitute a macroscopic roughness. Microscopic roughness is determined by epidermal cell size and arrangement, which influence the geometry of the grooves between these cells. Ultra‐microscopic roughness is determined by the size, shape and organization of the epicuticular wax system. The effect of environmental conditions on surface roughness is also considered and the significance of the spreading of spray drops is discussed in relation to the application of pesticides.