FACULTY OF AGRICULTURE

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

Browse

Has files: YesSubject: search.filters.subject.Biomass

Search Results

Now showing 1 - 3 of 3
  • Thumbnail Image
    Item
    Floristic importance of phyllanthus amarus schumach & thonn in selected farming communities and its domestication in Oyo state, Nigeria
    (2019) Awodoyin, R.O.; Omage, F.I.; Egberongbe, R.K.; Olubode, O.S.
    Phyllanthus amarus is a pantropic weed with numerous medicinal uses. It is collected in the wild, often in unwholesome environment and is hardly available all year round, which calls for its domestication for eventual cultivation. The distribution and seedling growth of P. amarus were studied in two seasons at two farming communities in Oyo State, Nigeria. A 25 x 25 m plot was marked out in Akufo and Fiditi. Fifteen quadrats (50 x 50 cm) were randomly placed using x-y ordinate system to enumerate and determine Relative Importance Value (RIV) for all low growing plants. Growth and dry matter accumulation of seedlings were monitored in a pot trial in clay and sandy-loam soils, combined with four watering intervals (1, 2, 3 and 7 days). Data were analysed using ANOVA and means separated by Least Significant Difference at 5% level of probability. Results showed that Phyllanthus amarus is more abundant at Fiditi (RIV=47.16%) than Akufo (RIV=9.15%) at the onset of wet season but reduced at the mid wet season. It performed best (P ≤ 0.05) on sandy-loam soil and daily watering significantly effected its best growth and dry matter yield. Phyllanthus amarus responded positively to daily watering, but its importance value reduced with recruitment of other species as the wet season advanced, which presented it as an inferior competitor and explains its reduced availability in the wild at the peak of wet season and in the dry season. For cultivation purposes therefore, Phyllanthus amarus should be grown in well-drained soils with regular weeding carried out and with adequate moisture provided.
  • Thumbnail Image
    Item
    Household energy choice relationships and determinants in Nigeria
    (2002) Hamzat, O.I; Akin-Olagunju, O.A; Yusuf, W.A; Yusuf, S.A
    In many developing countries, efforts are being made to encourage more efficient energy choices to lessen adverse effects on health and the environment. This study examined the relationship among fuel options and assessed the determinants of household energy choices for Ibadan, Nigeria. Data collected from 180 respondents using multistage sampling procedure were analysed with bivariate probit and logit regression models. Firewood and charcoal were found to be in use as substitute cooking fuels to LPG while electricity was used as its complement. Improved economic state of households was associated with the use of clean energy sources. Households with large number of members had to settle for less clean fuel types because of low per capita resource availability while education assisted in making better fuel choices for cooking. The study recommends policies aimed at growing national income and improving citizens’ welfare. Education-for-all campaigns should be intensified and national education projects scaled up for improved access. Rural areas also need targeted development so that the inhabitants can seek alternatives to traditional fuels
  • Thumbnail Image
    Item
    Suitability of screened fungi for solid state fermentation
    (1999) Abu, O. A.; Losel, D. M.; Onifade, A. A.; Tewe, O. O.
    Seven fungi were screened to determine their suitability for solid-state fermentation. In a 5-day submerged fermentation Aspergillus niger, Aspergillus oryzae, Fusarium oxysporum, Rhizopus isolate, Amtillaria mellea and Rhizopus sexualis recorded 166.49, 122.60, 50.58, 23.94. 17.94 and 39.80 mg/ 100 ml biomass production respectively. Pleurotus ostreatus did not show any growth. However the colony radial growth rates of A. niger, A. oryzae, F. oxysporum and P. ostreatus varied from 10.50-76.88 mm over a 7-day growth period. The best colony radial growth rate of 76.88 mm was obtained for A. niger while 49.83, 73.83 and 50.50 mm were obtained for A. oryzae, P. ostreatus and F. oxysporum respectively. A positive correlation was obtained between colony radial growth rates and rate of starch utilization by the fungi. The overall result indicated that A. niger and A. oryzae had superiority over other fungi for all the parameters studied. They are therefore recommended for future studies of protein enrichment of starchy Substrates by solid state fermentation.