Growth response of Rhizophora racemosa G. Meyer seedling in artisanal refining impacted mangrove vegetation, following the application of N.P.K 15:15:15 inorganic fertilizer

M. Yabrade, F.B.G. Tanee and G. C. Obute
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M. Yabrade: Department of Marine Environment and Pollution Control, Faculty of Marine Environmental Management, Nigeria Maritime University Okerenkoko, Delta State, Nigeria
F.B.G. Tanee: Department of Plant Science and Biotechnology, Faculty of Sciences, University of Port Harcourt, Port Harcourt, Nigeria
G. C. Obute: Department of Plant Science and Biotechnology, Faculty of Sciences, University of Port Harcourt, Port Harcourt, Nigeria

International Journal of Research and Innovation in Applied Science, 2022, vol. 7, issue 12, 53-58

Abstract: The growth response of Rhizophora racemosa seedlings was monitored in a designated artisanal refining-impacted mangrove vegetation in Delta State, Nigeria; following the application of different quantities of N.P.K 15:15:15 inorganic fertilizer. An area of 12.5 m x 6.25 m, was mapped out, demarcated into four treatment Plots-A1 (1000g N.P.K), A2 (1500g N.P.K), A3 (Natural attenuation) and A4 (2000g N.P.K), with a double control (non-polluted) Plot-B, sited 6km away. After treatment, the plots were left fallow for 30 days, after which propagules of Rhizophora racemosa were planted. Vegetative parameters such as leaf number, leaf length, leaf width, plant height, plant girth, leaf length/leaf width ratio, leaf area, plant dry weight, shoot dry weight and root dry weight were observed after 25, 50, 75 and 100 days of planting. Results showed that, the double control Plot-B, recorded the best performance in plant growth parameters among all the treatment options and was significant at P

Date: 2022
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