FACULTY OF AGRICULTURE

Permanent URI for this communityhttps://repository.ui.edu.ng/handle/123456789/261

Browse

Subject: search.filters.subject.management

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Farmers’ Preferences for Tree Species on Agroforestry System in Ijebu North Local Government Area, Ogun State, Nigeria
    (2012) Mustapha, R.I.; Jimoh, S.O.
    This study was conducted to generate information on tree species farmers are willing to retain or plant on then- farms; the benefits they derive from the trees and the traditional management practices used for such trees in Ijebu North Local Government Area of Ogun State, in southwestern Nigeria, Multistage sampling technique was used to collect data on the tree species preferred by farmers, the benefits derived from the trees and the management practices used for such trees. A structured questionnaire was administered and data were analyzed using simple descriptive statistics. Farmers retain 72 tree species on their farms based on their knowledge and socio economic needs. They retain and plant fruit trees (17%), timber trees (18%), fuelwood (1%), and medicinal trees (1%). Sixty three percent (63%) of the farmers retain all the types of tree species on their farms as scattered on-farm trees due to the benefits they derive from them. The benefits include: food (88.8%), firewood (78.8%), fruits (95.6%), shades (91.9%), traditional medicine (94.4%), income generation (98.8%) and other environmental services (31.4%). On- farm trees are regenerated or sown directly on the field. Pruning and coppicing are the management practices applied.
  • Thumbnail Image
    Item
    Forest Structure Analysis in the Oban Division of Cross River National Park, Nigeria
    (David Publishing Company, 2012) Jimoh, S. O.; Adesoye, P. O.; Adeyemi, A. A.; Ikyaagba, E. T.
    Information on forest structure is important for forest management decisions. This is inadequate in many situations, especially where timber is not of primary interest. We analyzed the structure of two forest types in the Oban Division of Cross River National Park, Nigeria. Systematic sampling technique was used to establish two transects measuring 2,000 x 2 m, at 600 m interval in the two forest types in four locations. Four 50 m x 50 m plots were located alternately at 500 m intervals along each transect, constituting 32 plots per forest type and 64 plots in all. Diameters at breast height (DBH), base; middle and top; crown diameter; total height and crown length were measured on all trees with DBH > 10 cm. There were 159 stems/ha in the close-canopy forest and 132 stems/ha in the secondary forest. The mean DBH were 34.5 cm and 33.62 cm respectively. The mean heights were 24.79 m and 23.97 m, respectively. Basal area/ha were 41.59 m2 ha'1 and 27.38 m2 ha'1 for the two forest types. Majority of the trees encountered in the two forest types belonged to the middle stratum which has implication for small mammals’ populations. Emergent trees which are otherwise scarce in other parts of the country were recorded, which also has implications for density thinning and seed supplies