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The Perennation and Control of Pear Scab ( Venturia pirina Aderb.)
Author(s) -
WILLIAMSON CYNTHIA J.,
BURCHILL R. T.
Publication year - 1974
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1974.tb01828.x
Subject(s) - benomyl , ascospore , biology , venturia inaequalis , conidium , pear , horticulture , spring (device) , urea , botany , agronomy , fungicide , spore , mechanical engineering , biochemistry , engineering
SUMMARY The production of ascospores of Venturia pirina from overwintered infected leaves, and of conidia from stem lesions was assessed in 1969 and 1970. Autumn post‐harvest dips of infected leaves in phenylmercuiic chloride (0·01 per cent), benomyl (0·0125 per cent a.i.), thiabendazole (0·0125 per cent a.i.) and urea (5–3 per cent) prevented ascospore formation in the following spring. Spring pre‐bud‐burrst dips in these chemicals partially suppressed ascospore production., but conidia production from stem lesions in spring was stimulated by autumn, followed by pre‐bud‐burst, sprays of benomyl, urea and PMC.