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The Role of Above-ground Biomass in Soil Fertility Management in Cocoa Plantations in Ondo State, Nigeria.
Abuja Journal of Geography and Development (2016)
  • Afolayan, OS Geography and Environmental Management Department, University of Ilorin, Nigeria
Abstract
Survival of cocoa in tropical rainforest is saddled with the sequential circulation and concentration of nutrient between the above and below-ground biomass. Prominent among the above-ground biomass is litter of which the accumulated nutrient in leaves return into the soil. Ability of cocoa tree to remain productive for quiet a number of years without the application of chemical fertilizer lies on the role of litterfall in returning nutrient already uptaken back to the soil. This paper assessed the aboveground biomass potential in soil fertility under cocoa plantations. A community from Idanre, Owo and Odigbo were purposively selected where matured cocoa farms within age 45 and 50 years were chosen. Leave litters and soil samples (topsoil and subsoil) were collected from each of the 25m by 25m quadrat. Both samples were subjected to physico-chemical analyses, using routine laboratory techniques. ANOVA result shows significant variation within the study area and Student t-test indicates significant difference between the above and belowground biomass. It was observed that the ability of litter to replenish lost nutrient from the soil is high when its nutrient content is considered in terms of P, Mg2+, Ca2+ and Mn in aged cocoa plantations. The study recommends seasonal relocation of pod deposit, periodic application of micronutrient via agrochemical and spreading of podhusk across the farms as well as adoption of pod husk fertilizer; to complement the effort of litter
Keywords
  • Litterfall,
  • leaf,
  • nutrient,
  • soil,
  • plantations
Publication Date
Winter January 4, 2016
Citation Information
Afolayan, OS Geography and Environmental Management Department. "The Role of Above-ground Biomass in Soil Fertility Management in Cocoa Plantations in Ondo State, Nigeria." Abuja Journal of Geography and Development Vol. 4 Iss. 1 (2016) p. 1 - 11
Available at: http://works.bepress.com/abujajournalofgeographyanddevelopment_geographyandenvironmentalmanagementdepartment/12/
Creative Commons license
Creative Commons License
This work is licensed under a Creative Commons CC_BY International License.