Evidence map›Paper›PMID 28878251›Full record

ArticleScientific reports2017

Effects of biochar, waste water irrigation and fertilization on soil properties in West African urban agriculture.

Volker Häring, Delphine Manka'abusi, Edmund K Akoto-Danso, Steffen Werner, Kofi Atiah, Christoph Steiner, Désiré J P Lompo, Samuel Adiku, Andreas Buerkert, Bernd Marschner

Erratum issuedAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Body Size and Weight of Pill Bugs (Animals : an open access journal from MDPI · 2023
    Article
  4. Article
  5. Biophysical potential of crop residues for biochar carbon sequestration, and co-benefits, in Uganda.Ecological applications : a publication of the Ecological Society of America · 2019
    Article
  6. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Volker HäringInstitute of Geography, Department for Soil Science and Soil Ecology, Ruhr-Universität Bochum, Universitätsstr. 150, D-44780, Bochum, Germany. volker.haering@gmail.com.ORCID 0000-0001-7899-2845
Delphine Manka'abusiOrganic Plant Production and Agroecosystems Research in the Tropics and Subtropics, Universität Kassel, Steinstr. 19, D-37213, Witzenhausen, Germany.
Edmund K Akoto-DansoOrganic Plant Production and Agroecosystems Research in the Tropics and Subtropics, Universität Kassel, Steinstr. 19, D-37213, Witzenhausen, Germany.
Steffen WernerInstitute of Geography, Department for Soil Science and Soil Ecology, Ruhr-Universität Bochum, Universitätsstr. 150, D-44780, Bochum, Germany.
Kofi AtiahInstitute of Geography, Department for Soil Science and Soil Ecology, Ruhr-Universität Bochum, Universitätsstr. 150, D-44780, Bochum, Germany.
Christoph SteinerOrganic Plant Production and Agroecosystems Research in the Tropics and Subtropics, Universität Kassel, Steinstr. 19, D-37213, Witzenhausen, Germany.
Désiré J P LompoOrganic Plant Production and Agroecosystems Research in the Tropics and Subtropics, Universität Kassel, Steinstr. 19, D-37213, Witzenhausen, Germany.
Samuel AdikuDepartment of Soil Science, University of Ghana, Accra, Ghana.
Andreas BuerkertOrganic Plant Production and Agroecosystems Research in the Tropics and Subtropics, Universität Kassel, Steinstr. 19, D-37213, Witzenhausen, Germany.
Bernd MarschnerInstitute of Geography, Department for Soil Science and Soil Ecology, Ruhr-Universität Bochum, Universitätsstr. 150, D-44780, Bochum, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In large areas of sub-Saharan Africa crop production must cope with low soil fertility. To increase soil fertility, the application of biochar (charred biomass) has been suggested. In urban areas, untreated waste water is widely used for irrigation because it is a nutrient-rich year-round water source. Uncertainty exists regarding the interactions between soil properties, biochar, waste water and fertilization over time. The aims of this study were to determine these interactions in two typical sandy, soil organic carbon (SOC) and nutrient depleted soils under urban vegetable production in Tamale (Ghana) and Ouagadougou (Burkina Faso) over two years. The addition of biochar at 2 kg m

Identifiers

PMID28878251
PMCPMC5587607

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.