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Screening trials of materials for suppressing spore production by Gloeosporium perennans on apple trees
Author(s) -
CORKE A. T. K.
Publication year - 1967
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.1744-7348.1967.tb04477.x
Subject(s) - spore , biology , fungicide , horticulture , orange (colour) , inoculation , botany , shoot
SUMMARY In a screening trial of thirteen potential spore suppressants carried out in 1965, sporing cankers on Cox's Orange Pippin shoots, induced by inoculation with Gloeosporium perennans in November 1964, were treated at bud‐burst with the test materials. The most effective spore suppressant was dichlo‐fluanid; this, with the next five most effective materials and six additional materials, was used in a second trial in 1966, when the greatest reduction in spore production was obtained with tetrachloro‐o‐cresol. A general trend towards correspondence between spore output from cankers and infection on neighbouring fruits was shown, but this could be modified by a number of factors, including changes in spore viability caused by fungicide treatment.