The Frog-Eye Leaf Spot of Apples |
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66 July 66 June A. N. HODGSON agar Agronomist Alternaria mali apple leaves Associate Horticulturist Associate Ben Davis black rot BLACKSBURG Bordeaux mixture Cankers and mummies Condition Result Greenhouse Coniothy Coniothyrium pirinum constantly present control of frog-eye Coryneum foliicolum defoliated enlargement of frog-eye Entomologist Field Greenhouse Field foliage frog-eye leaf spot frog-eye spot fruit growers Fungi Which Grew Fusarium Greenhouse Field Greenhouse HARVEY CRABILL Hendersonia Husbandman Associate Illosporium malifoliorum infected with Frog-Eye initial infection inoculation Iron Bordeaux J. D. EGGLESTON July 13 June 23 MONTGOMERY COUNTY naria Number Pestalozzia sp Phyllos Phyllosticta limitata Phyllosticta pirina pure culture pycnidia rium Rot of Apples round spots Saccardo's saprophytes seared season secondary enlargement shows that Sphæropsis small circular brown Sources of Infection Sphærop Sphæropsis is constantly Sphaeropsis malorum Sphæropsis spores spores of Sphæropsis spot begins spray injury SPRAYING EXPERIMENTS starch Station Superintendent susceptible TABLE thrust cultures Winesap York Imperial young spots