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Glasshouse tests of chemicals for control of potato common scab
Author(s) -
MCINTOSH A. H.
Publication year - 1973
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.1744-7348.1973.tb01324.x
Subject(s) - captan , common scab , biology , fungicide , chemical control , yield (engineering) , greenhouse , horticulture , agronomy , toxicology , streptomyces , bacteria , genetics , materials science , metallurgy
SUMMARY Quintozene is the only chemical used successfully in practice to control soil‐borne Streptomyces scabies , the cause of potato common scab. However it may be carcinogenic, and the aim of this work was to find a substitute for it. About 100 chemicals, most of which had known fungitoxic action or were related to such chemicals, were tested in the glasshouse by growing potato plants in soil with which the chemicals had been mixed, usually at 50 ppm. Many of the chemicals failed to decrease the incidence of scab, or decreased the yield of tubers, or both. The most effective chemical was captafol, which was as effective as quintozene and, unlike quintozene, did not decrease yield. Captan and folpet, which are very closely related to captafol, were ineffective.