Side effects of propiconazole (tilt 250 EC) on non-target soil fungi in a field trial compared with natural stress effects

The present study was performed as a dose-response field experiment using a trade marked formulation of the ergosterol biosynthesis inhibiting fungicide, propiconazole, applied at the recommended and ten times the recommended application rates. The soil dilution plate method was used to isolate fung...

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Bibliographic Details
Published in:Microbial ecology 1991-12, Vol.22 (1), p.99-108
Main Author: Elmholt, S. (Danish Research Centre for Crop Protection, Slagelse, Denmark)
Format: Article
Language:English
Subjects:
Agricultural soils
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
CARACT MORFOLOGICAS DEL SUELO
CHAMPIGNON
CLADOSPORIUM
DANEMARK
DATE DE TRAITEMENT
DINAMARCA
DOSE D'APPLICATION
DOSIS DE APLICACION
Ecotoxicology, biological effects of pollution
EFECTOS SECUNDARIOS
EFFET SECONDAIRE
ENSAYO
FACTEUR DU MILIEU
FACTORES AMBIENTALES
FECHA DE TRATAMIENTO
FEUILLE
FLORA DEL SUELO
FLORE DU SOL
FONGICIDE
Fundamental and applied biological sciences. Psychology
Fungi
FUNGICIDAS
Fungicides
HOJAS
HONGOS
LEVADURA
LEVURE
PENICILLIUM
POTENCIAL HIDRICO DEL SUELO
POTENTIEL HYDRIQUE DU SOL
PROFONDEUR
PROFUNDIDAD
Side effects
Soil fungi
Soil microorganisms
Soil samples
Soil water
Terrestrial environment, soil, air
TESTAGE
TOXICOLOGIA
TOXICOLOGIE
TRAIT MORPHOLOGIQUE DU SOL
VARIACION ESTACIONAL
VARIATION SAISONNIERE
Yeasts
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Summary:The present study was performed as a dose-response field experiment using a trade marked formulation of the ergosterol biosynthesis inhibiting fungicide, propiconazole, applied at the recommended and ten times the recommended application rates. The soil dilution plate method was used to isolate fungi from 0-1 and 1-2 cm soil depth. Soil samples were taken 10 times during the period from May 22 to August 11, 1986. The numbers of yeasts and filamentous fungi were enumerated, the latter including Cladosporium and Penicillium, which were also enumerated separately. The fluctuations in fungal occurrence due to the propiconazole treatment were smaller than seasonal fluctuations, these most likely being caused by variations in the soil matric potential and by soil invasion of phyllosphere fungi. Fungicide treatment had significant inhibitory effects on the filamentous fungi, especially on the Cladosporium, whereas no significant effects were found on the yeasts and on Penicillium spp. From an ecotoxicological point of view, it is important that the effects were considerably delayed, with respect to the time of fungicide application
ISSN:0095-3628
1432-184X
DOI:10.1007/BF02540216