Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract Full Text

Allelopathic effect of velvetleaf (Abutilon theophrasti Medik.) on germination and growth of soybean.


Velvetleaf (Abutilon theophrasti Medik.) is an invasive weed species in numerous crops. The aim of the study was to determine the allelopathic potential of velvetleaf water extracts on seed germination and initial growth of soybean. Water extracts from dry above-ground mass of velvetleaf in different concentrations (1%, 2.5%, 5%, 10%) were evaluated in a laboratory experiment in Petri dishes. The results of the study showed that the increase in extract concentration increased the negative allelopathic effect. Significant inhibition of root length and fresh weight of soybean seedlings was found, with a reduction of up to 69.9% and 23.3%, respectively. On the other hand, a statistically significant effect on seed germination, shoot length, and dry weight of soybean seedlings was not observed.