Online ISSN: 2521-0246 | Print ISSN: 2523-0573
Volume 5 Number 1 March 2021
Antibacterial, Compositional and Physicochemical Properties of Guizotia Scabra (Vis.) Chiov. Seed Oil Found on Jos-Plateau-NigeriaPages: 05-09
Authors: Gambo N. N.*, Ibejekwe, S. J., Ayuba S. D.
The oil extract of G. scabra seeds was analyzed for its antibacterial, chemical and physical properties. Physical and chemical properties analyzed included moisture content (0.91%), acid value (13.65%), iodine value (132.27), peroxide value (18.58), saponification value (191.03), free fatty acids (6.86%) and density (0.87g/cm3). The oil was found to inhibit the growth of Staphylococcus aureus (SA), Escherichia coli (EC) and Salmonella typhi (ST) at an MIC of 50%. However, there was no effect on Shigella sonnei (SS). The fatty acid composition of the extracted oil was revealed using the Gas chromatography Mass spectrometry (GC-MS) method. A total of 18 components of the oil were identified. Oleic acid (27.07%), 10- undecenoic acid (19.99%), palmitic acid (10.56%) and stearic acid (6.22%) were detected as the dominant fatty acids in the G. scabra seed oil.
Defoliation Effects on Growth, Development and Yield of Okra (Abelmoschus esculentus) Under an Irrigation RegimePages: 01-04
Authors: David Longwap Wonang*, Simon Nengak Deshi, Iliya Goyit
An experiment was conducted at Research and Demonstration Farm of Agricultural Science Department, Federal College of Education, Pankshin located in the Northern Guinea Savanna Agro-ecological Zone of Nigeria to investigate defoliation effects on morphological characters and yield attributes of okra (Abelmoschus esculentus) carried out during 2015 and 2016 dry season. The experiment comprised five levels of defoliation viz: 0% (control), 30%, 60%, 90%, and 100%. The experiment was laid out in identical Randomized Complete Block Design (RCBD) with six replications. Results revealed that defoliation had significant effect on the studied crop characters and yield. Most of the parameters like plant height, stem girth; number of leaves, leaf area, and yield parameters decreases which are a function of increasing defoliation levels intensity. Defoliation at 0% and 30% were tolerable for okra plant growth and development, while at 90% and 100% was detrimental to plant growth and yield. Hence, defoliation at 30% is recommended to meet farmers’ pod and leaf requirement.