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The allelopathic effect of the black nut leaves (Juglans nigra L.) over the species of moon – raddish (Raphanus sativus L.) and white mustard (Sinapis alba L.)

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Author(s): Sorina CORBU | Monica SIPOS

Journal: Analele Universitatii din Oradea, Fascicula Biologie
ISSN 1224-5119

Volume: TOM XIII;
Start page: 94;
Date: 2006;
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Keywords: allelopathy | stimulation | inhibition | germination | growing

ABSTRACT
The present experiment is a research on the effect of the allelopathic substances in the leaves of the black nut (Juglans nigra L.) over the species of white mustard (Sinapis alba L.) and the moon – raddish (Raphanus sativus L.). We have prepared a watery extract of a concentration of 5, 15, 25, 50, 75 and 100% from the leaves in different seasons (spring, autumn and winter). The watery extract presents an inhibitory effect over the germination and growth of the plants subdued to experiments, especialy over the leaves collected in spring.
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