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Abi E.A.,Forestry Research Institute of Nigeria
Arboricultural Journal | Year: 2015

The study evaluates the potentials of Community Forestry (CF) techniques with a view to strengthening forest law enforcement and sustaining the collaboration of government and forest stakeholders in sustainable forest management. The method used for the study was a socio-economic survey among the stakeholders in Plateau/Montane, Savanna/Grassland, Rainforest and Mangrove ecological zones in Cross River State Nigeria to gather data through observations and conducting a survey questionnaire. A total of 1193 stakeholders responded; 785 (65.8%) were involved in CF. Analysis was undertaken using Chi-square which was significant (χ2 = 119.14) at p <.0005. Incentives needed for effective forest law enforcement revealed that Community Involvement in Decision Making (CIDM) had the highest odd ratio of 40461.51. This was followed by Training and Capacity Building (TCB); Financial Empowerment (FE); and Soft Loan (SL) with odd ratios of 4299.99, 152.45 and 31.38, respectively. The regression parameters in the model were statistically significant. CF has been used fairly as a tool for enforcing forest laws across the four ecological zones in Cross River State. However, the Forestry Commission has been poor in discharging its statutory functions. It is recommended that there should be an urgent need for the State Forestry Commission in Cross River State to formulate forest policy and programmes that would involve CIDM by all stakeholders; TCB; FE; and SL for a more participatory CF. © 2016 Taylor & Francis and Arboricultural Association. Source

Ajala O.O.,Forestry Research Institute of Nigeria | Ogunsanwo O.Y.,University of Ibadan
Journal of Tropical Forest Science | Year: 2011

Sourcing of choice timber species is becoming increasingly difficult in the forests of West Africa including Nigeria. There is a need to provide alternative species by investigating the technical qualities of species that are hitherto not harvested. Six trees of Aningeria robusta were sampled at the base, 10, 30, 50, 70 and 90% of merchantable length and partitioned into the inner, middle and outer wood along the radial plane. Specific gravity (SG) and selected mechanical properties, namely, modulus of rupture (MOR), compressive strength parallel to grain (MCS) and impact bending (IB) were investigated. Data were analysed using analysis of variance. The overall mean SG was 0.44, while the mean values for MOR, MCS and IB were 89.05 N mm -2, 27.45 N mm -2 and 0.2 m respectively. Significant variations existed between sampling heights in SG and MOR, while variations in MCS and IB were not significant along the bole. For all properties investigated, no significant variation was found from the inner to the outer wood. The wood properties of this species indicate that it has the potential to substitute some popular species in the market. Its radial and axial uniformity may be exploited in marketing strategy. © Forest Research Institute Malaysia. Source

Ugwu J.A.,Forestry Research Institute of Nigeria | Omoloye A.A.,University of Ibadan
Journal of Entomology | Year: 2014

Iroko gall bug, Phytolyma lata (Homoptera; Psylidae) is a major insect pests militating against cultivation of Milicia exceslsa (Iroko) in many parts of West Africa. The reproductive and developmental biology was studied to give an insight on the management approach that could be adopted for it. The study was conducted on 6 month-old iroko seedlings in the laboratory following standard procedure at 27-32±0.3°C and 75-80% relative humidity and 12:12 photoperiod. Developmental period, sex ratio, fecundity, oviposition period and adult longevity were assessed. Adult females Phytolyma lata were oviparous under laboratory condition with; pre-oviposition period (1.40±0.54 days), oviposition periods (4.00±1.22 days), fecundity (41.20±5.35/female), incubation period (5.8±0.54 days) and 95% egg viability. There were five nymph instar stages. The body width and head width of female were significantly larger than male (p>0.05).The average growth rate for the five instars was 1.48. The average life cycle of Phytolyma lata was 17.55±0.97 days and the sex ratio was 1:1.45 in favour of females. There was significant (p<0.05) correlation (r = 0.973) between the stages of nymphal development and the head width. Mated and unmated male lived significantly (p<0.05) shorter than mated female unmated female under laboratory condition. © 2014 Academic Journals Inc. Source

Ugwu M.A.,Forestry Research Institute of Nigeria | Omoloye A.A.,University of Ibadan
Journal of Entomology | Year: 2014

The effect of net barrier and synthetic insecticides on Phytolyma lata infestation, growth and survival of Milicia excelsa seedlings was investigated during the year 2010-2011 in Ibadan Southwest Nigeria. In a complete randomized design with three replications, a 2 m high netted barrier were laid out in unit plots of 15×15 m2 using five treatments: Blue net+dimethoate+carbofuran, Green net+dimethoate+cabofuran, Blue net+dimethoate, Green net+carbofuran and dimethoate only (control). Plant height, stem diameter, number of branches, numbers of galls, Pytolyma lata density, plant mortality and survival of Milicia seedling were recorded at monthly interval for two years. The treatments showed a significant difference (p<0.05) over the control. The net barrier plants were free from P. lata infestation 12 months after planting. The combined treatments of blue net barrier, dimethoate and carbofuran recorded least number of galls (7.89%) on Milicia seedlings while combined treatments of green net, dimethoate and carbofuran recorded least population density of P. lata (13.59%). There was no significant difference (p<0.05) between the combined treatments of blue and green barrier nets on the plant growth, although blue net+dimethoate+carbofuran recorded highest plant height and stem diameter with mean of 122.50 cm and 1.03 mm, respectively. Integrated treated plots recorded 100% seedling survival while control plot recorded 54% seedling survival after two years. Integration of net barrier with carbofuran and dimethoate is economical and should be adopted for successful establishment of Milicia plantation. © 2014 Academic Journals Inc. Source

Dawodu F.A.,CAS Institute of Process Engineering | Dawodu F.A.,University of Ibadan | Ayodele O.,CAS Institute of Process Engineering | Ayodele O.,University of Ibadan | And 4 more authors.
Applied Energy | Year: 2014

Interest in biodiesel research has increased over the years due to diminishing petroleum reserves but biodiesel has to be derived from non-edible oils in order to avoid the competition with food supply. Here, we report a one step catalytic conversion of non-edible seed oil, Calophyllum inophyllum with free fatty acid of 15% into biodiesel over biomass-derived catalysts. The effective catalysts were prepared by incomplete carbonization of carbon materials under inert atmosphere and then SO3H groups were introduced to obtain catalysts whose activities are comparable to conventional acid catalysts. At the optimized conditions, high conversion (99%) was achieved. The stability of the catalysts was also investigated. © 2013 Elsevier Ltd. Source

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