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OBSERVATIONS ON BROWN ROT ( SCLEROTINIA FRUCTIGENA ) OF APPLES IN RELATION TO INJURY CAUSED BY EARWIGS ( FORFICULA AURICULARIA )
Author(s) -
CROXALL H. E.,
COLLINGWOOD C. A.,
JENKINS J. E. E.
Publication year - 1951
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.1744-7348.1951.tb07853.x
Subject(s) - biology , orange (colour) , sclerotinia sclerotiorum , horticulture , auricularia , botany
Observations in West Midlands orchards in 1947–50 on the apple varieties Cox's Orange Pippin and Laxton's Superb showed that brown rot was often associated with shallow holes in the fruit. Laboratory experiments with undamaged apples proved that earwigs ( Forficula auricularia ) could cause this type of injury. Bands of sacking soaked in BHC placed around trunks of Laxton's Superb trees in 1949 and 1950 trapped many earwigs; less brown rot occurred in the banded than on control trees. A survey of picked fruit in 1950 showed close correlation between degree of earwig damage and amount of brown rot. Earwig damage was appreciable in fruit from ten out of thirteen grass orchards, but was negligible in fruit from nine arable plantations.