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The suppression of ascospore production to facilitate the control of apple scab ( Venturia inaequalis (Cke.) Wint.)
Author(s) -
BURCHILL R. T.,
HUTTON K. E.
Publication year - 1965
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.1744-7348.1965.tb01237.x
Subject(s) - venturia inaequalis , biology , apple scab , orchard , ascospore , fungicide , horticulture , canker , agronomy , botany , spore
SUMMARY Using phenylmercuric chloride (PMC) as the experimental fungicide it has been shown that spraying trees once in autumn at 0.05% and again just before bud‐burst at 0.01% reduced scab infection on blossom truss leaves by over 99% in the following spring. In another orchard 0.01% PMC sprays in autumn and just before bud‐burst, followed by fungicide sprays in spring and early summer, gave complete control of scab. In a third orchard, which was subject to contamination by ascospores from non‐treated apple trees, infection was reduced by 56.9% by one autumn and one pre‐bud‐burst spray of 0.01% PMC without subsequent anti‐scab sprays.