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

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Modupe Janet Ayeni
Modupe Janet Ayeni
2
Joshua Kayode
Joshua Kayode

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GJSFR Volume 13 Issue C7

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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.

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No external funding was declared for this work.

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The authors declare no conflict of interest.

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. 2013. \u201cAllelopathic Efeects of Aqueous Extracts of Plant Residues on Two Tropical Weeds of South Western Nigeria\u201d. Global Journal of Science Frontier Research - C: Biological Science GJSFR-C Volume 13 (GJSFR Volume 13 Issue C7): .

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GJSFR Volume 13 Issue C7
Pg. 13- 20
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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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December 31, 2013

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English

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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.

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

Modupe Janet Ayeni
Modupe Janet Ayeni
Joshua Kayode
Joshua Kayode

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