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Investigations on fungicides
Author(s) -
HEYNS A. J.,
CARTER G. A.,
ROTHWELL K.,
WAIN R. L.
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.tb01258.x
Subject(s) - fungicide , biology , mildew , botrytis cinerea , spore , powdery mildew , germination , erysiphe graminis , botrytis , spore germination , horticulture , botany , poaceae , hordeum vulgare
SUMMARY The fungicidal properties of thirty‐three N‐substituted S‐esters derived from dithiocarbamic acid were examined. Several compounds inhibited the germination of spores of Botrytis fabae in vitro at concentrations below 100 p.p.m., but activity against Erysiphe graminis was considerably lower. In greenhouse tests the compounds were not effective against B. fabae when sprayed on broad bean seedlings but several gave more than 80% reduction of mildew infection when sprayed on wheat seedlings. Some compounds also showed a marked eradicant action against wheat mildew. The effect of pH, plant sap and amino acids upon their fungitoxicity was also studied and the degree of activity shown by the compounds is discussed in relation to these and other factors.