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Soil assessment along toposequences in rural northern Nigeria : a geomedical approach

  • Case numbers of endemic Ca-deficiency rickets (CDR) have been reported to be alarmingly rising among children of subsistence farms in developing countries within the last 30 years. Fluoride toxicities in the environment are known to not be related to the disease. To investigate if, instead, CDR is caused by a nutrient deficiency in the environment, subsistence farms in an endemic CDR area near Kaduna, northern Nigeria, were investigated for bedrock, slope forms, soil types, and soil characteristics. The natural environment was investigated according to the World Reference Base, soil texture was analysed by pipette and sieving, and plant-available macronutrients were determined using barium-chloride or Ca-acetate-lactate extraction. The analyses showed that granite and slope deposits were the dominant parent materials. The typical slope forms and soil types were Lixisols and Acrisols on pediments, Fluvisols in river valleys, and Plinthosols and Acrisols on plains. Compared with West African background values, all of the soils had normal soil textures but were low in macronutrients. Comparisons to critical limits, however, showed that only the P concentrations were critically low, which are typical for savanna soils. A link between nutrient deficiency in soils and CDR in the Kaduna area was therefore considered unlikely.

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Author:Lena Hartmann, Marvin Gabriel, Yuanrong Zhou, Barbara Sponholz, Heinrich ThiemeyerGND
URN:urn:nbn:de:hebis:30:3-505159
DOI:https://doi.org/10.1155/2014/628024
ISSN:1687-7675
ISSN:1687-7667
Parent Title (English):Applied and environmental soil science
Publisher:Hindawi Publ. Corp.
Place of publication:New York, NY [u. a.]
Contributor(s):Amaresh Kumar Nayak
Document Type:Article
Language:English
Year of Completion:2004
Date of first Publication:2004/03/27
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2019/08/01
Volume:6
Issue:Art. 628024
Page Number:10
First Page:1
Last Page:9
Note:
Copyright © 2014 Lena Hartmann et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
HeBIS-PPN:452197066
Institutes:Geowissenschaften / Geographie / Geographie
Wissenschaftliche Zentren und koordinierte Programme / Zentrum für Interdisziplinäre Afrikaforschung (ZIAF)
Dewey Decimal Classification:9 Geschichte und Geografie / 91 Geografie, Reisen / 910 Geografie, Reisen
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 3.0