VIEW ARTICLE

The Removal of Helminthosporium maydis Spores by Wind. Paul E. Waggoner, The Connecticut Agricultural Experiment Station, New Haven 06504; Phytopathology 63:1252-1255. Accepted for publication 30 March 1973. DOI: 10.1094/Phyto-63-1252.

Helminthosporium maydis spores were blown from maize leaves in proportion to the supply. Spores formed during four days of moisture were more easily removed than younger ones, spores near the leading edge were more easily removed than those near the center of the leaf, and spores between veins were slightly more easily removed than those on the veins of the leaves. In 15 sec, a wind of 3 m/s removed about 20% of the spores 5 mm from the leading edge and a wind of 7 m/s removed about 80%.