FACULTY OF AGRICULTURE
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Item Costing of sustainable forestry, agroforestry and biomass energy in Rwanda(2016-07) Ajewole, O. I; Makundi, W.; Nduwamungu, J.Item Assessment of users’ preferences for sawn wood species in Ibadan metropolis, Nigeria(2016-06) Ajewole, O. I; Adedeji, G. A; Olabisi, W. B.Users of wood still have preferences despite increasing reduction in the availability of wood species. This study was therefore carried out to assess the users’ preferences for sawn wood species in Ibadan metropolis, Nigeria. A cross-sectional survey study, which employed questionnaire and on-site observations, was used. A sample of 210 respondents was purposively selected from twenty one associations’ of sawn wood users comprising mixtures of active furniture makers and carpenters in five local government areas of Ibadan metropolis. Data were analysed using descriptive statistics such as percentages, frequency and ranking. Of the 27 species, users expressed the highest preference for Gmelina arborea, which ranked 1st with a frequency of 99.5%, and least preferred was Funtumia elastica with a frequency of 2.4%. Sawn wood users comprise furniture makers only (29.5%), carpenters only (2.9%), and combined furniture makers/carpenters (67.6%). Based on the wood conversion methods, 73.3% of users preferred wood from band-saw milling and chain-saw milling, 26.7% preferred wood from band- saw milling only, while none preferred wood from chain-saw milling only. Criteria for users’ preferences for sawn wood species were durability (50%), workability (28.5%), and attractive colour of the species (22.5%). In addition, users expressed accuracy in dimension (62.9%), ease to work on (27.1%), and specification order by the final consumers (10%) as criteria for preferring sawn wood from band-saw milling to that from chain-saw milling. Efforts should be made to shift the consumption paradigm from reliance on natural forests to conservation approaches focusing on market oriented mass establishment of plantations of the preferred species.Item Potentials of cemetries as urban tree conservation areas in Ibadan metropolis(2015) Ajewole, O. I; Olajuyigbe, O. S; Hassan, A. RA cemetery, because of its presumed sanctity, is less disturbed from other land use activities in the urban areas and thus serves in many cases as the last remnant for greenery and conservation of trees in many large cities. However, there is little information on the population, diversity and management of trees in cemeteries located in the Ibadan metropolis. Therefore, this study was carried out to determine the potentials of cemeteries as urban tree conservation areas. Eight cemeteries under different management within the metropolis were sampled and their tree species composition, density and population determined. Their land areas were also determined and the trees, classified based on their origin and uses. The size of the cemeteries ranged from 0.03 - 0.48 km2. There were 48 tree species from 22 different families represented in the eight cemeteries, with 28 of these species indigenous to the lowland rainforest ecosystem. Fabaceae family had the highest species representation. Cemeteries under government and institutional management had a larger representation of trees than the private and religious ones, with the highest number of trees (399) found in the Ibadan South East Cemetery, Orita-Aperin which had a tree density of 0.014 m-2. The University of Ibadan cemetery recorded the highest species composition (28) with a tree density of 0.03 m-2. Albizia zygia had the highest number of identified uses (15), while shade and shelter were the most common attributes of trees in the cemeteries. They could assist in the preservation of tree genetic diversity and serve as botanic refuge for many threatened species. Therefore, management of modern city cemeteries require enlightenment on the conservation role such facilities could play in urban areas.Item Consumption Pattern and Demand Analysis of Dacryodes edulis in Umuahia Metropolis of Abia State(2015-08) Adenegan, K.; Olowoyo, F. B; Ajewole, O. I; Koyejo, O. A; Okelola, O. EConsumption pattern and demand analysis of Dacryodes edulis commonly called ube by the Igbos in Umuahia, Nigeria was studied. The various uses and reasons for consumption of Dacryodes edulis, socio- economic characteristics of respondents, income elasticity, and chi square to determine the relationship between Consumption of Dacryodes edulis and some variables that affect it, are addressed. Simple random sampling was adopted. A well-structured questionnaire were used for Dacryodes edulis consumers at the household in two selected local government areas in Umuahia. A total of (160) one hundred and sixty questionnaires were administered, on a total of eight (8) villages in the city of Umuahia. Data obtained were subjected to simple descriptive statistics, which shows that almost all the respondents (92.0%) consume Dacryodes edulis and they got to know of Dacryodes edulis through family and friends due to its high medicinal value as claimed by 91.3% of the respondents. The income elasticity of Dacryodes edulis demand is 13%. The income elasticity is significant at 5% with coefficient of 0.13, this means that a percent increase in income leads to a 13% of change in Dacryodes edulis consumption.Item Effects of commercial processing of selected non wood forest products on rural livelihood and resource sustainability in Oyo state(2013) Arabomen, O.; Ajewole, O. IThis study was conducted with a view to identify the socio-economic characteristics of processors of Vitellaria paradoxa and Parkia biglobosa; to examine the role of the rural dwellers in the sourcing and processing of V. paradoxa and P. biglobosa; to examine the different benefits that accrue to commercial processing of V. paradoxa and P. biglobosa and to investigate strategies put in place for sustainable use of V. paradoxa and P. biglobosa in the study area. Three (3) Local Government Areas were purposively selected for the study and purposive random sampling method was adopted for the selection of respondents. Primary data were obtained through the use of questionnaires while secondary data was gathered from relevant literature. Data collected were analyzed using descriptive statistical tools and gross margin analysis. The result showed that 90% of Vitellaria paradoxa and 94.3% of Parkia biglobosa processors were female. Majority of the processors of V. paradoxa (77.1%) and P. biglobosa (58%) fell within the age range of 21-40 years. Fruits of V. paradoxa (84.3%) and seeds of P. biglobosa (77.1%) were obtained from processors farmlands as a result of the relative availability of the trees on their farmlands. The remaining processors of V. paradoxa (15.7%) and P. biglobosa (22.9%) had no trees on their farmlands so they gathered the fruits and seeds from and around forest lands. 84.37% of V. paradoxa and 88.5% of P. biglobosa processors indicated that income was the main economic benefit derived from this business while social benefits highlighted by the respondents ranged from produce been used as food, medicine, condiment and cosmetic. The result also showed that processors of V. paradoxa incurred more costs, produced more output and had a higher average gross return in processing than P. biglobosa processors. The RORI for the processing business in the study area was 51% and 96%. To promote sustainability the people have adopted local means of sustaining production by preventing indiscriminate livestock grazing and bush burning.Item Species selectivity for charcoal production in three ecological zones of Nigeria(2012) Eniola, P. O.; Odebode, S. O.; Ogunsanwo, O. Y.; Ajewole, O. ISeveral factors influence the quantity of charcoal production in different parts of Nigeria. The study investigated species selectivity for charcoal production in three ecological zones of Nigeria. Data were obtained through the use of structured interview schedule administered to three hundred and twenty seven respondents selected through snowball. The data were subjected to descriptive and analysis of variance. The results show that the mean age of respondents was 44, male (88.1%), primary school leaving certificate (42.2%), married (92.0%), respondents with charcoal production as primary occupation is 41.0%. Mean for years of experience was 13 years and income mean from charcoal per annum was ₦217,336.4. Respondents made use of earth mound method to produce charcoal. Major source of trees for charcoal production is natural vegetation. Mean for number of trees spp. used is 10.6, charcoal yield of trees spp. (mean =7.6), availability of trees spp. (mean =13.2), and emerging trees spp. (mean=7.1). Charcoal is produced in both dry and wet season with average of 16,000kgs/annum. Analysis of variance inferred that there are significant differences between source of trees for charcoal production (F= 3.951), number of trees spp. used (F=173.824), charcoal yield of trees spp. (F=238.062), availability of trees spp. (F= 47.413) and emerging trees spp. (F=208.192). More foresters/environmental extension agents should be employed and equipped to monitor the activities of rural dwellers in the forest. Forest licensing and fees collection must be restructured, re-orgarnised and increased to prevent illegal logging.Item Survey and governance of street trees in Damaturu, Nigeria(2010) Ajewole, O. I; Garba, M. UThis study examined the characteristics and management of street trees in Damaturu, the growing capital city of Yobe State, located in the Sudan savanah ecological zone of Nigeria. Enumeration of street trees was carried out in the major roads of Damaturu to identify tree species and determine population of the species. Data on the management of amenity trees in the town were collected through administration of questionnaire to forestry officials in the State’s Ministry of Environment. Data collected were analysed with descriptive statistics. The forestry field services and afforestation project units of Yobe State’s Forestry Department, in the State’s Ministry of Environment are saddled with the responsibility of managing the street trees in the city. The State’s Forestry Department has been involved with planting of trees along roads and streets since the State was created in 1991, development and management of nature’s parks for recreation since 1994 and the development and management of Greenbelt since 2003.Although there are obsolete laws and regulations guiding the use of amenity trees in Damaturu, there is yet no substantive policy document to direct the management of amenity trees in the state. Funding of street trees management in the State was generally inconsistent and inadequate between 2000 and 2010. Management of amenity trees in Damaturu enjoyed the participation of NGOs such as the Desert Shield and Yobe environmental network. Twenty tree species were identified along the major streets of the town with a total population of 2562 trees. The treescape of Damaturu has very low diversity, with Azadiracta accounting for 94.81% of the population of the street trees. Other notable tree species enumerated in order of prevalence include Polyalthia longifolia, Tamarindus indica, Piliostigma retuculata, Adansonia digitata, Acacia nilotica, Acacia sieberiana, Phoenix dactylifera, Acacia albida, Khaya senegalensis, Balanitea egyptiaca, Gmelina arborea, Eucalyptus camadulensis, Ficus platyphylla, Mangifera indica, Terminalia catappa, Albezia lebeck, Delonix regia, Ficus polita and Psidium guajava Effective street trees governance in Damaturu in particular and Yobe State in general will require the establishment of street tree unit in the state’s ministry of Environment. This unit in tandem with NGOs and other stakeholders will be responsible for mobilizing funds and members of public as well as spearheading formulation of appropriate requisite law and policy.Item Urban forestry and public health(Topbase Nigeria Limited, 2011) Ana, G. R; Ajewole, O. I