Evidence for Allelopathic Activity of Mikania micrantha H.B.K. on Three Weed Species

B. S., Ismail and Mah, Lay Suat (1994) Evidence for Allelopathic Activity of Mikania micrantha H.B.K. on Three Weed Species. Pertanika Journal of Science & Technology, 2 (1). pp. 73-83. ISSN 0128-7680

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Abstract

Laboratory, greenhouse and field studies were conducted to determine the allelopathic potential of Mikania micrantha H.B.K. on the germination and growth of three weed species, A.systasia gangetica (L.) T. Anders., Chrysopogon aciculatus (Ritz.) Trin and Paspalum conjugatum Berg. Germination and fresh weight of all three weeds decreased progressively when exposed to increasing concentrations of aqueous leaf or root extract of Mikania. The phytotoxic effect of root extract on the radicle elongation of the test species was greater than that of leaf extract. The dry weight and rate of emergence of the bioassay species used were affected when Mikania debris (leaf or root) were placed on soil surfaces or incorporated into the soil. P. conjugatum emergence was strongly affected when Mikania (root orleaf) was incorporated into the soil. Soil collectedfrom the field where Mikania had been growing had no effecton the final germination of the three weed species. However, dry weights of A. gangetica and P. conjugatum were significantly reduced when grown in the Mikanilt-infested soi

Item Type:Article
Keyword:allelopathy, Mikania mierantha, debris, aqueous leaf extract, root extract, Arystasia, Chrysopogon, Paspalum
Publisher:Universiti Putra Malaysia Press
ID Code:3129
Deposited By: Nur Izzati Mohd Zaki
Deposited On:24 Nov 2009 02:38
Last Modified:27 May 2013 07:05

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