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Plants 2018, 7(3), 57; https://doi.org/10.3390/plants7030057

Biochar Remediation Improves the Leaf Mineral Composition of Telfairia occidentalis Grown on Gas Flared Soil

1
Department of Biochemistry, Michael Okpara University of Agriculture, Umudike, Umuahia P.M.B 7267, Abia State, Nigeria
2
Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan 90001, Oyo State, Nigeria
3
Department of Food Science and Technology, Michael Okpara University of Agriculture, Umudike, Umuahia P.M.B 7267, Abia State, Nigeria
4
Department of Agriculture, Health and Environment, Natural Resources Institute, University of Greenwich, Chatham ME4 4TB, UK
*
Author to whom correspondence should be addressed.
Received: 31 May 2018 / Revised: 24 June 2018 / Accepted: 25 June 2018 / Published: 13 July 2018
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Abstract

This study evaluates the effects of remediation of gas flared soil by biochar on the nutritional composition of cultivated Telfairia occidentalis leaves, relative to non-gas flared soil. Gas flared soils are degraded due to the presence of heavy metals, noxious gases, carbon soot and acidic rain. Biochar produced from oil palm fibre was applied at five different amounts: 0 t ha−1, 7.1 t ha−1, 13.9 t ha−1, 20.9 t ha−1 and 28.0 t ha−1 to containerized soils (both gas flared and control soil), inside a greenhouse, which were allowed to mineralize for two weeks. Two viable seeds of T. occidentalis per replicate were sown. After eight weeks of growth, leaves were harvested, dried and chemically analyzed. Application of biochar significantly increased leaf ash and crude fibre content of Telfairia occidentalis. Plants from soil treated with 13.9 t ha−1 of biochar had the highest concentrations of vitamins A, B1, B2, B6, C and E irrespective of soil type. Maximum increase in leaf vitamin and mineral content was obtained from leaves cultivated on gas flared soil treated with 13.9 t ha−1 and 7.1 t ha−1 of biochar respectively. The results show that biochar treatment can increase leaf mineral concentrations and that this effect is dependent on the amount of biochar application. View Full-Text
Keywords: biochar; gas flare; mineral content; nutritional content; protein; soil remediation; vitamin biochar; gas flare; mineral content; nutritional content; protein; soil remediation; vitamin
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. (CC BY 4.0).
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Akachukwu, D.; Gbadegesin, M.A.; Ojimelukwe, P.C.; Atkinson, C.J. Biochar Remediation Improves the Leaf Mineral Composition of Telfairia occidentalis Grown on Gas Flared Soil. Plants 2018, 7, 57.

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