Latest Issue
ISSN : 2456-8643

Title:
INFLUENCE OF TEAK, (Tectona grandis) ON MICROBIAL POPULATIONS IN AKANGA FOREST RESERVE OF NASARAWA STATE NIGERIA

Authors:
Grace Dachung , G.M Gberikon and Bemgba Anjembe

Abstract:
Laboratory and field experiments were carried out during the dry and wet seasons of 2010 and 2011 at the Akanga Forest planted with Teak (Tectona grandis) for the production of timber and poles. The area prior to use was an undisturbed forest and planting was carried out from 1966 at an annual interval to the year 1982.The intent of these experiments was to compare the changes in microbial composition and population as well as the influence of seasons on the microbial populations. Soil samples were collected from three plantation age series 1979, 1980, 1981 and control. The samples were analyzed using standard procedures. Litter accumulation was found to be highest in the 1981 plantation with a value of 545.18kg/ha in the dry season. Microbial composition was determined to be predominantly bacteria and fungi. Bacteria population was found to be highest in the wet season (99.84 Cfu/g). Fungi population was also found to be 98.10Cfu/g in the wet season. There were significant relationships between the microbial population and diversity and other edaphic factors. This study showed that rainfall seasons have great effect on the parameters studied. It was concluded that protection of the litter layer is necessary in order to ameliorate soil degradation and nutrient limitation in the study area, since litter layer was not only the main source of soil organic matter and available nutrients, but also the regulator of soil microbial activity.

PDF Download