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A laboratory method of screening fungicides for systemic activity against Bretnia lactucae
Author(s) -
CRUTE I. R.,
WOLFMAN S. A.,
DAVIS A. A.
Publication year - 1977
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.1744-7348.1977.tb00640.x
Subject(s) - biology , fungicide , zineb , botany , toxicology , horticulture , mancozeb
SUMMARY A soil‐free in vivo laboratory technique is described for the detection of systemic anti‐fungal activity against Bretnia lactucae , a representative of the Peronosporales. This system is not subject to some of the complications encountered with in vitro and glasshouse experiments. Two new compounds (prothiocarb and LS 73–1038 (Nina)) were found to have high systemic activity against B. lactucae using this technique and it was confirmed that zineb also has some systemic effect. Streptomycin sulphate and DPX‐3217 showed some activity but were phytotoxic. Dowco 269 was phytotoxic and showed no activity against B. lactucae. None of these chemicals showed any significant vapour activity.