Allelopathic Effects of Some Selected Tree Species on the Germination and Growth of Cowpea (Vigna unguiculata L. Walp.) - Open Journal of Forestry

OJF > Vol.4 No.4, July 2014

Volume 4, Issue 4 (July 2014)

ISSN Print: 2163-0429 ISSN Online: 2163-0437

Google-based Impact Factor: 0.90 Citations

Allelopathic Effects of Some Selected Tree Species on the Germination and Growth of Cowpea (Vigna unguiculata L. Walp.) ()

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DOI: 10.4236/ojf.2014.44037 5,405 Downloads 7,582 Views Citations

Author(s)

M. O. Aleem, L. O. Alamu, O. S. Olabode

Affiliation(s)

Department of Crop and Environmental Protection, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
Department of Crop Production and Soil Science, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.

ABSTRACT

The allelopathic effect of three tree species (Azardiracta indica, Vitellaria paradoxa, and Parkia bi-globosa) on germination and growth of cowpea was investigated in the Southern Guinea Savannah agro ecological zone of Nigeria. The experiment was laid out in Randomized Complete Block Design (RCBD) with three (3) replicates. Data were collected on germination, plant height, stem diameter, number of leaves, number of branches, root length, the above grand biomass and the below grand biomass and were subjected to statistical analysis using Analysis of Variance (ANOVA) while the significant mean was separated using Duncan’s Multiple Range Test (DMRT) at 5% possibility level. Results showed that the tree species brought about considerable inhibition in the germination of cowpea seeds and in its growth parameters. The statistical germination value of the cowpea seeds under the tree species had decreased value thus indicating that growth inhibitions were seriously felt. It was apparent that Parkia biglobosa (53.33) and Vitellaria paradoxa (60.00) had more inhibitory effect on cowpea seeds germinability than that of Azardiracta indica. (63.33) while all the treatments are lower than that of control (100). The tree species had similar inhibition capability in the cowpea plant height, stem circumference, number of leaves, above grand biomass and below grand biomass. However, in all treatment, statistic showed that there is no significant difference (p < 0.05) among the means.

KEYWORDS

Allelopathy, Inhibition, Azardiracta indica, Vitellaria paradoxa, Parkia biglobosa

Share and Cite:

Aleem, M. , Alamu, L. and Olabode, O. (2014) Allelopathic Effects of Some Selected Tree Species on the Germination and Growth of Cowpea (Vigna unguiculata L. Walp.). Open Journal of Forestry, 4, 310-315. doi: 10.4236/ojf.2014.44037.

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