Donnish Journal of Agricultural Research

September 2016 Vol. 3(3), pp. 017-021

ISSN: 2984-8938

Copyright © 2016 Donnish Journals

Original Research Article

Bio-herbicidal Potential of the Aqueous Extracts of the Leaves and Barks of Gliricidia sepium (Jacq) Kunth Ex Walp on the Germination and Seedling Growth of Bidens pilosa L.

Ayeni Modupe Janet

Department of Plant Science and Biotechnology, Ekiti State University, Ado-Ekiti, P.M.B. 5363 Ado-Ekiti. Ekiti State, Nigeria.

Corresponding Author's Email: jayeni@yahoo.com

Accepted 10th August, 2016.

Abstract

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The herbicidal potentials of aqueous extracts of the leaves and barks of Gliricidia sepium (Jacq.) Kunth ex Walp on Bidens pilosa were investigated. The extracts from leaf and bark residues of the tree inhibited the germination and seedling growth of Bidens pilosa L. The degree of inhibition demonstrated in both extracts was concentration dependent. However, the results obtained revealed that the inhibition was pronounced in both extracts derived from G. sepium, no germination and radicle length emerged until 72hrs experimental time. Similarly, the extracts retarded the plumule length of B. pilosa, no germination and radicle length emerged until 96hrs experimental time. The G. sepium bark extracts retarded the radicle length of B. pilosa at 168hrs experimental time, the control experiment had 1.08cm which reduced to 0.09cm in 15g/200ml concentration. In leaf extracts treated seeds, the radicle was 1.08 cm in the control experiment which reduced to 0.11cm in 15g/200ml at 168hrs experimental time. Statistical analysis (AVOVA, P<0.05) revealed that significant differences were observed in the germination, radicle and plumule lengths of the extract treated seeds when compared to the control experiments. The inhibitory effects of the aqueous extracts derived from leaves and barks of G. sepium might justify the usefulness of this plant in the eradication of B. pilosa on farmlands. Further research should be carried out to ascertain the potentials of the extracts as bio-herbicides.

Keywords: Bidens pilosa, Gliricidia sepium, Bio-herbicides, Aqueous extract, Inhibitory.

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Cite This Article:

Ayeni Modupe Janet. Bio-herbicidal Potential of the Aqueous Extracts of the Leaves and Barks of Gliricidia sepium (Jacq) Kunth Ex Walp on the Germination and Seedling Growth of Bidens pilosa L.. Donnish Journal of Agricultural Research 3(2) 2016 pp. 017-021.