אסיף מאגר המחקר החקלאי

Essential oils as allelochemicals and their potential use as bioherbicides

Year:

1999

Source of publication :

Authors :

Volume :

25

Co-Authors:

Dudai, N., Division of Aromatic Plants, ARO, Newe Ya'ar P.O.B. 1021, Ramat Yishay 30095, Israel
Poljakoff-Mayber, A., Department of Botany, Hebrew University of Jerusalem, Jerusalem 91904, Israel
Mayer, A.M., Department of Botany, Hebrew University of Jerusalem, Jerusalem 91904, Israel
Putievsky, E., Division of Aromatic Plants, ARO, Newe Ya'ar P.O.B. 1021, Ramat Yishay 30095, Israel
Lerner, H.R., Department of Botany, Hebrew University of Jerusalem, Jerusalem 91904, Israel

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Abstract:

Essential oils were extracted from 32 aromatic plants and evaluated for allelopathic properties. The major components of the oils were identified by gas chromatography and GC-MS. Extracts from Origanum syriacum, Micromeria fruticosa, and Cymbopogon citratus were selected for further study. The germination of several species, including wheat, was strongly inhibited by essential oils when applied at 20-80 ppm. Essential oils mixed with the top 0.5 cm of soil inhibited germination of wheat and Amaranthus seeds. This effect depended on the type of soil. The possible use of essential oils as herbicides is discussed.

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