Allelopathic effects of vetiver grass on weeds
1996
Thiamjai Komkris | Suchada Sripen | Sombun Techapinyawat(Kasetsart University. Bangkhen Campus, Bangkok (Thailand). Faculty of Science. Department of Botany)
Vetiver is a tropical perennial grass, widely distributed thoughout Thailand Vetiver is cultivated for erosion control as well as a sort of barrier to prevent the invasion of weeds. Experiments were performed to investigate allelopathic effects of vetiver grass on weeds. Methanol extract of ground dried stems and roots of 3 vetiver ecotypes were tested on 10 common weed species. It was found that root and stem extracts from 3 vetiver ecotypes Ratchaburi, Suratthani and Indonesia strongly inhibited seed germination and seedling growth of Amaranthus gracilis Desf., Abutilon hirtum Sweet. Pennisetum polystachyon Schult., Melochia corchorifolia Linn. and Ruellia tuberosa Linn. The degree of inhibition was vetiver ecotypes, concentration of the extracts and weed species dependent. The study also suggests the possibility of developing a natural herbicide from vetiver grass which will leave hopefully little of no toxic residue harmful to the environment.
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