Show simple item record

dc.contributor.author Kizza, Sarah
dc.contributor.author Totolo, Otlogetswe
dc.contributor.author Perkins, Jeremy
dc.contributor.author Areola, Olusegun
dc.date.accessioned 2012-05-25T11:15:22Z
dc.date.available 2012-05-25T11:15:22Z
dc.date.issued 2011-12-04
dc.identifier.citation Kizza, S. et al. (2010), Analysis of persistence soil nutrient statusin abandoned cattle kraals in a semi arid area of Botswana, Scientific Research Essays Vol. 5 (23), pp. 3613 - 3622, 4 December 2010 en_US
dc.identifier.issn 1992-2248
dc.identifier.uri http://hdl.handle.net/10311/1016
dc.description Full Length Research Paper en_US
dc.description.abstract The aim of this study was to analyze the depletion of soil nutrients with time on abandoned kraals in a peri-urban area of Botswana. Active kraals are enriched with nutrients through the accumulation of animal droppings and this study was aimed at assessing how long the impact of this soil nutrient enrichment persists after kraal abandonment. A total of 25 disused kraals, that had been abandoned for periods ranging from 1 to 45 years were sampled. The soil parameters analyzed included particle size distribution (%), bulk density (g/cm3), pore space (%), moisture content (%), pH in water and KCl solution, EC (μS/cm), organic matter (%), CEC (meq/100g), exchangeable Ca++(cmolc/kg), Mg++(cmolc/kg), K+(cmolc/kg), Na+ (cmolc/kg), nitrogen [NH4-N (mg/kg), NO3-N (mg/kg), TKN (%), and Olsen P (mg/kg). Results showed that soil nutrient concentrations on abandoned kraals generally were significantly higher than at the control sites. Soil nutrient concentrations decreased with time as abandoned kraals retrogressed towards their pre-kraal conditions. However, the effects of soil nutrient enrichment from animal wastes persist long after kraal abandonment. For example, soil Olsen P, Ca++ and Mg++ levels in kraal sites that had been abandoned for over 45 years were still significantly higher than in the control sites. In a pastoral system such as is practiced in Botswana where kraal manure is not used as soil amendment, the whole ecosystem suffers as soil nutrients are transferred and concentrated at isolated spots (kraals). en_US
dc.language.iso en_US en_US
dc.publisher Academic Journals, http://www.academicjournals.org en_US
dc.rights All works published by Academic Journals are under the terms of the Creative Commons Attribution License. en_US
dc.subject Abandoned kraal en_US
dc.subject Soil nutrient status en_US
dc.subject Pastoral systems en_US
dc.subject Semi-arid en_US
dc.title Analysis of persistence soil nutrient statusin abandoned cattle kraals in a semi arid area of Botswana en_US
dc.type Published Article en_US
dc.link http://www.academicjournals.org/sre/pdf/pdf2010/4Dec/Kizza%20et%20al.pdf en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search UBRISA


Advanced Search

Browse

My Account