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Assessing the synergistic impacts of poultry manure and biochar on nutrient-depleted sand and sandy loam soil properties and sweet potato growth and yield – RETRACTION

Published online by Cambridge University Press:  21 April 2026

Taiwo Michael Agbede Open the ORCID record for Taiwo Michael Agbede [Opens in a new window] ,
Adefemi Oyewumi ,
Aruna Olasekan Adekiya ,
Ojo Timothy Vincent Adebiyi ,
Thomas Adebayo Abisuwa ,
Justin Orimisan Ijigbade ,
Catherine Temitope Ogundipe ,
Segun O. Oladele ,
Opeyemi Olaogun  and
Ehiokhilen Kevin Eifediyi
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Abstract

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Information

Type
Retraction
Information
Experimental Agriculture , Volume 62 , 2026 , e6
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2026. Published by Cambridge University Press

This article was reported by a reader as being a duplicate of another publication, received and published earlier:

Agbede, T.M. and Adefemi, O, (2022) ‘Benefits of biochar, poultry manure and biochar–poultry manure for improvement of soil properties and sweet potato productivity in degraded tropical agricultural soils’, Resources, Environment and Sustainability, 7 (March 2022), 100051, https://doi.org/10.1016/j.resenv.2022.100051

After editorial review, the reader’s report was upheld and the publication was found to be substantially duplicated from the earlier publication, with major levels of redundancy. This later article is therefore retracted.

The corresponding author was contacted for comment but did not reply.

The authors, other journal and reader have been informed of this action.

References

Agbede, TM, Oyewumi, A, Adekiya, AO, et al. Assessing the synergistic impacts of poultry manure and biochar on nutrient-depleted sand and sandy loam soil properties and sweet potato growth and yield. Experimental Agriculture. 2022;58:e54. doi:10.1017/S0014479722000497 CrossRefGoogle Scholar