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Effects of soil applications of benomyl and captan on the growth of onions and the occurrence of endophytic mycorrhizas and rhizosphere microbes
Author(s) -
BERTOLDI M. de,
GIOVANNETTI M.,
GRISELLI M.,
RAMBELLI 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.tb01820.x
Subject(s) - benomyl , captan , biology , rhizosphere , dry weight , botany , mycorrhiza , horticulture , arbuscular mycorrhiza , agronomy , fungicide , symbiosis , bacteria , genetics
SUMMARY When grown for 6 months in the absence of pathogens, repeated soil applications of benomyl or captan significantly and similarly decreased growth of onion seedlings by 22–25% (diameter) and 31–34% (dry weight). The losses were associated with differing effects on soil microbes. Whereas captan had no effect on the occurrence of vesicular‐arbuscular mycorrhizas it appreciably decreased populations of rhizosphere fungi. In contrast benomyl inhibited mycorrhiza formation but had a relatively small effect on rhizosphere fungi.