engleski

Allelopathic effect of Polygonum lapathifolium L. on germination and initial growth of soybean

The aim of the study was to determine allelopathic effect of water extracts from Polygonum lapathifolium L. on germination and initial growth of soybean. Water extracts from dry stems and leaves of P. lapathifolium at 0, 1, 5 and 10% concentrations were examined under laboratory conditions. Results showed that germination was not significantly affected when extracts were applied. Inhibition of root length of soybean seedlings ranged from 36.2 to 71.2%. Higher concentrations (5 and 10%) of both extracts significantly reduced, while 1% leaf extract showed stimulatory effect on soybean root length. With the increase of extract concentration, shoot length and fresh weight of soybean seedlings proportionately decreased, on average for 32.9 and 34.7%, respectively.

allelopathy ; Polygonum lapathifolium L. ; water extracts ; soybean

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