Carum carvi L. essential oil: A promising candidate for botanical herbicide against Echinochloa crus-galli (L.) P. Beauv. in maize cultivation

Agnieszka Synowiec , Katarzyna Możdzeń , Agnieszka Krajewska , Marco Landi , Fabrizio Araniti

Abstract

Natural, essential oil-based emulsions could be in future an alternative for synthetic herbicides. In this study, the possibility that foliar-applied caraway or peppermint essential oils (EO) can selectively inhibit the growth of Echinochloa crus-galli (L.) P. Beauv. (barnyardgrass, a typical maize weed) but not that of maize plants was tested, in attempt to develop an eco-friendly botanical herbicide. The phytotoxic potential of oil-in-water emulsions of each EO with addition of commercial adjuvant, mainly composed of fatty acids methyl esters, was examined. Their effect on visible plants injuries, biomass accumulation, chlorophyll a fluorescence and changes to biochemical patterns of both the main crop (maize) and barnyardgrass via an untargeted metabolomic approach were studied. It was found that oil-in-water emulsion containing 2.5% of adjuvant and of caraway EO did not affect significantly the growth of maize plants, did not induce foliar symptoms and did not alter the status of the photosynthetic apparatus, as revealed by chlorophyll a fluorescence. On the contrary, this emulsion exerted significantly negative effects against barnyardgrass growth, inducing foliar injuries and reducing the photosynthetic efficiency of photosystem II. It was also found that the studied emulsions caused a series of biochemical changes in the plant tissues, with caraway emulsion being more phytotoxic, as compared to the peppermint EO-emulsion. In conclusion, oil-in-water emulsion containing 2.5% of caraway EO could be used in future as a foliar-applied botanical herbicide against barnyardgrass in maize cultivation.
Author Agnieszka Synowiec (FoAE / DoAaAE)
Agnieszka Synowiec,,
- Department of Agrotechnology and Agricultural Ecology
, Katarzyna Możdzeń
Katarzyna Możdzeń,,
-
, Agnieszka Krajewska
Agnieszka Krajewska,,
-
, Marco Landi
Marco Landi,,
-
, Fabrizio Araniti
Fabrizio Araniti,,
-
Journal seriesIndustrial Crops and Products, ISSN 0926-6690, e-ISSN 1872-633X, (N/A 200 pkt)
Issue year2019
No140
Pages1-1
Publication size in sheets0.3
Keywords in EnglishBio-herbicide, Biochemical process, Chlorophyll a fluorescence, Leaf injury, Metabolomics, Phytotoxicity
ASJC Classification1102 Agronomy and Crop Science
DOIDOI:10.1016/j.indcrop.2019.111652
URL https://www.sciencedirect.com/science/article/abs/pii/S0926669019306624
Languageen angielski
Score (nominal)200
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.693; WoS Impact Factor: 2018 = 4.191 (2) - 2018=4.419 (5)
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