Allelopathic Effects of Aqueous Extracts of Plant Residues on Two Tropical Weeds of South Western Nigeria

Allelopathic Effects of Aqueous Extracts of Plant Residues on Two Tropical Weeds of South Western Nigeria

J. Kayode

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Modupe Janet Ayeni

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Joshua Kayode

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Ekiti State University

Allelopathic Effects of Aqueous Extracts of Plant Residues on Two Tropical Weeds of South Western Nigeria

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Abstract

The allelopathic effects of aqueous extracts of plant residues from zea mays (root and tassel) and cajanus cajan (leaves and stem) were examined on the two weeds, euphorbia heteropyhlla l. and bidens pilosa l. the results obtained showed that the aqueous extracts retarded the germination and the initial growth of both weeds. the effects were concentration dependent as the degree of retardation increased with increase in the concentrations of the extracts. the retardation of germination of e. heterophylla seeds was more pronounced in seeds treated with extracts from c. cajan leaf. The % germination decreased from 18% in the 5g concentration to 10% in 25g/200mL concentration at 144hrs experimental time. Similarly, the retardation of germination of B. pilosa seeds was more pronounced in C. cajan stem extract treated seeds. The % germination decreased from 52% in the 5g concentration to 20% in 25g/200mL concentration at 144hrs experimental time. The radicles of the two weeds were also retarded by the extracts. The retardation of radical lengths of E. heterophylla and B. pilosa seedlings were more pronounced in Cajanus cajan stem extract treated seeds as no radicle emerged until 72hrs experiment time. The radicle length of E. heterophylla seedling at 144hrs experiment was 0.93cm in the 5g concentration which reduced to 0.29cm in 25g/ 200mL extract concentration.

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Funding

No external funding was declared for this work.

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The authors declare no conflict of interest.

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How to Cite This Article

J. Kayode. 2013. \u201cAllelopathic Effects of Aqueous Extracts of Plant Residues on Two Tropical Weeds of South Western Nigeria\u201d. Global Journal of Science Frontier Research - D: Agriculture & Veterinary GJSFR-D Volume 13 (GJSFR Volume 13 Issue D12).

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GJSFR Volume 13 Issue D12

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords

allelopathy bidens pilosa cajanu s cajan euphorbia heterophylla

Submission ReceivedSeptember 17, 2013
Peer Review Double Blind
Handling Editor
Accepted October 15, 2013
Published October 30, 2013

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November 1, 2013

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Article Matrices

Total Score: 102

Country: Nigeria

Subject: Global Journal of Science Frontier Research - D: Agriculture & Veterinary

Authors: Modupe Janet Ayeni, Joshua Kayode (PhD/Dr. count: 0)

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Publish Date: 2013 11, Fri

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Total Views: 4651

Total Downloads: 2410

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