Phytotoxic and microbiological activities of soil-applied microencapsulated peppermint (Mentha x piperita L.) essential oil

LE STUDIUM Multidisciplinary Journal, 2019, 3, 21-24

Agnieszka Synowiec1,2, Dr Christophe Hano2


1LE STUDIUM Institute for Advanced Studies, 45000 Orléans, France

2Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), INRAE, University of Orléans, France


During this fellowship I performed several greenhouse and laboratory experiments, aiming at assessing the phytotoxic and microbiological effects of microencapsulated peppermint (Mentha x piperita L.) essential oil (MPO). The different doses of MPO were applied in the pot experiments either into vermiculite or top layer of arable soils. As the acceptor-species, I used four maize cultivars, one cultivar of mustard and a weed– lambsquarters (Chenopodium album L.). The microbiological analyses were performed using i) commercial strain of arbuscular fungus Rhizophagus irregularis on maize roots by intersection method, and ii) natural soil-microbiota by FDA biotest. I have found, based on the ED50 analysis, that the phytotoxic effect of MPO is both dose and species as well as soil-medium dependent. The biochemical analyses revealed, that the plants’ response to the application of MPO is typical for the allelopathic stress. The microbiological responses to the MPO applications were not clear enough to conclude and should be continued further.


Botanical Herbicide
Growth inhibition
Biochemical response
Dose-response test
Soil microbial activity
Mycorrhizal symbiosis
Published by

Le STUDIUM Multidisciplinary Journal