Cash for trash: An agro-economic value assessment of urban organic materials used as fertilizers in Cameroon
The rapid expansion of cities in sub-Saharan Africa generates increasing volumes of diversified organic wastes that require management and a high population need for local and fresh vegetables. Linking the different sources of organic materials generated in these cities with the needs of local food producers for fertilizers prepared from recycled organic materials is challenging. This requires that producers obtain the results they expect from the organic materials they recycle. Thus, recycling these organic materials in their raw form or after composting presents an opportunity for periurban agriculture, although the great variability in the quantity and quality of these materials raises questions about the consistency between their agronomic value and their economic value. In two large cities of Cameroon (Yaoundé and Bafoussam), different types of organic materials were sampled: unprocessed livestock waste and composts from manure or municipal solid waste. From an agronomic perspective, we calculated the fertilization value based on the nutrient (nitrogen, phosphorus, and potassium) content of the organic materials. From an economic perspective, we calculated the value based on the nutrient content of the organic materials and their substitution unit prices and recorded the current market price. This is the first time that this combined approach has been used in sub-Saharan Africa. Our results showed considerable variability and discrepancy in both the agronomic and the economic values. The market prices overvalued the urban composts by a factor of 6, while chicken feces were undervalued by a factor of 3. The unprocessed organic materials were the most interesting from an economic and agronomic perspective. Our findings suggest that (i) the composting process needs to be improved and (ii) the humus potential should be calculated to better assess the amendment value of organic materials and as a basis for adjusting their market price.
Main Authors: | , , , , , , , |
---|---|
Format: | article biblioteca |
Language: | eng |
Subjects: | Q70 - Traitement des déchets agricoles, F04 - Fertilisation, E21 - Agro-industrie, déchet organique, déchet urbain, fertilisation, utilisation des déchets, compost, fumier, prix de marché, http://aims.fao.org/aos/agrovoc/c_35237, http://aims.fao.org/aos/agrovoc/c_35244, http://aims.fao.org/aos/agrovoc/c_10795, http://aims.fao.org/aos/agrovoc/c_16202, http://aims.fao.org/aos/agrovoc/c_1795, http://aims.fao.org/aos/agrovoc/c_2810, http://aims.fao.org/aos/agrovoc/c_28728, http://aims.fao.org/aos/agrovoc/c_1229, |
Online Access: | http://agritrop.cirad.fr/594183/ http://agritrop.cirad.fr/594183/1/2019%20THURIES%20et%20al_CashForTrashAnAgro-economicVal.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cirad-fr-594183 |
---|---|
record_format |
koha |
spelling |
dig-cirad-fr-5941832024-02-16T19:01:45Z http://agritrop.cirad.fr/594183/ http://agritrop.cirad.fr/594183/ Cash for trash: An agro-economic value assessment of urban organic materials used as fertilizers in Cameroon. Thuriès Laurent, Ganry Francis, Sotamenou Joël, Oliver Robert, Parrot Laurent, Simon Serge, Montange Denis, Fernandes Paula. 2019. Agronomy for Sustainable Development, 39 (6):52, 13 p.https://doi.org/10.1007/s13593-019-0598-7 <https://doi.org/10.1007/s13593-019-0598-7> Cash for trash: An agro-economic value assessment of urban organic materials used as fertilizers in Cameroon Thuriès, Laurent Ganry, Francis Sotamenou, Joël Oliver, Robert Parrot, Laurent Simon, Serge Montange, Denis Fernandes, Paula eng 2019 Agronomy for Sustainable Development Q70 - Traitement des déchets agricoles F04 - Fertilisation E21 - Agro-industrie déchet organique déchet urbain fertilisation utilisation des déchets compost fumier prix de marché http://aims.fao.org/aos/agrovoc/c_35237 http://aims.fao.org/aos/agrovoc/c_35244 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1795 http://aims.fao.org/aos/agrovoc/c_2810 http://aims.fao.org/aos/agrovoc/c_28728 Cameroun http://aims.fao.org/aos/agrovoc/c_1229 The rapid expansion of cities in sub-Saharan Africa generates increasing volumes of diversified organic wastes that require management and a high population need for local and fresh vegetables. Linking the different sources of organic materials generated in these cities with the needs of local food producers for fertilizers prepared from recycled organic materials is challenging. This requires that producers obtain the results they expect from the organic materials they recycle. Thus, recycling these organic materials in their raw form or after composting presents an opportunity for periurban agriculture, although the great variability in the quantity and quality of these materials raises questions about the consistency between their agronomic value and their economic value. In two large cities of Cameroon (Yaoundé and Bafoussam), different types of organic materials were sampled: unprocessed livestock waste and composts from manure or municipal solid waste. From an agronomic perspective, we calculated the fertilization value based on the nutrient (nitrogen, phosphorus, and potassium) content of the organic materials. From an economic perspective, we calculated the value based on the nutrient content of the organic materials and their substitution unit prices and recorded the current market price. This is the first time that this combined approach has been used in sub-Saharan Africa. Our results showed considerable variability and discrepancy in both the agronomic and the economic values. The market prices overvalued the urban composts by a factor of 6, while chicken feces were undervalued by a factor of 3. The unprocessed organic materials were the most interesting from an economic and agronomic perspective. Our findings suggest that (i) the composting process needs to be improved and (ii) the humus potential should be calculated to better assess the amendment value of organic materials and as a basis for adjusting their market price. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/594183/1/2019%20THURIES%20et%20al_CashForTrashAnAgro-economicVal.pdf text cc_by info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.1007/s13593-019-0598-7 10.1007/s13593-019-0598-7 info:eu-repo/semantics/altIdentifier/doi/10.1007/s13593-019-0598-7 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1007/s13593-019-0598-7 |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
Q70 - Traitement des déchets agricoles F04 - Fertilisation E21 - Agro-industrie déchet organique déchet urbain fertilisation utilisation des déchets compost fumier prix de marché http://aims.fao.org/aos/agrovoc/c_35237 http://aims.fao.org/aos/agrovoc/c_35244 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1795 http://aims.fao.org/aos/agrovoc/c_2810 http://aims.fao.org/aos/agrovoc/c_28728 http://aims.fao.org/aos/agrovoc/c_1229 Q70 - Traitement des déchets agricoles F04 - Fertilisation E21 - Agro-industrie déchet organique déchet urbain fertilisation utilisation des déchets compost fumier prix de marché http://aims.fao.org/aos/agrovoc/c_35237 http://aims.fao.org/aos/agrovoc/c_35244 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1795 http://aims.fao.org/aos/agrovoc/c_2810 http://aims.fao.org/aos/agrovoc/c_28728 http://aims.fao.org/aos/agrovoc/c_1229 |
spellingShingle |
Q70 - Traitement des déchets agricoles F04 - Fertilisation E21 - Agro-industrie déchet organique déchet urbain fertilisation utilisation des déchets compost fumier prix de marché http://aims.fao.org/aos/agrovoc/c_35237 http://aims.fao.org/aos/agrovoc/c_35244 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1795 http://aims.fao.org/aos/agrovoc/c_2810 http://aims.fao.org/aos/agrovoc/c_28728 http://aims.fao.org/aos/agrovoc/c_1229 Q70 - Traitement des déchets agricoles F04 - Fertilisation E21 - Agro-industrie déchet organique déchet urbain fertilisation utilisation des déchets compost fumier prix de marché http://aims.fao.org/aos/agrovoc/c_35237 http://aims.fao.org/aos/agrovoc/c_35244 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1795 http://aims.fao.org/aos/agrovoc/c_2810 http://aims.fao.org/aos/agrovoc/c_28728 http://aims.fao.org/aos/agrovoc/c_1229 Thuriès, Laurent Ganry, Francis Sotamenou, Joël Oliver, Robert Parrot, Laurent Simon, Serge Montange, Denis Fernandes, Paula Cash for trash: An agro-economic value assessment of urban organic materials used as fertilizers in Cameroon |
description |
The rapid expansion of cities in sub-Saharan Africa generates increasing volumes of diversified organic wastes that require management and a high population need for local and fresh vegetables. Linking the different sources of organic materials generated in these cities with the needs of local food producers for fertilizers prepared from recycled organic materials is challenging. This requires that producers obtain the results they expect from the organic materials they recycle. Thus, recycling these organic materials in their raw form or after composting presents an opportunity for periurban agriculture, although the great variability in the quantity and quality of these materials raises questions about the consistency between their agronomic value and their economic value. In two large cities of Cameroon (Yaoundé and Bafoussam), different types of organic materials were sampled: unprocessed livestock waste and composts from manure or municipal solid waste. From an agronomic perspective, we calculated the fertilization value based on the nutrient (nitrogen, phosphorus, and potassium) content of the organic materials. From an economic perspective, we calculated the value based on the nutrient content of the organic materials and their substitution unit prices and recorded the current market price. This is the first time that this combined approach has been used in sub-Saharan Africa. Our results showed considerable variability and discrepancy in both the agronomic and the economic values. The market prices overvalued the urban composts by a factor of 6, while chicken feces were undervalued by a factor of 3. The unprocessed organic materials were the most interesting from an economic and agronomic perspective. Our findings suggest that (i) the composting process needs to be improved and (ii) the humus potential should be calculated to better assess the amendment value of organic materials and as a basis for adjusting their market price. |
format |
article |
topic_facet |
Q70 - Traitement des déchets agricoles F04 - Fertilisation E21 - Agro-industrie déchet organique déchet urbain fertilisation utilisation des déchets compost fumier prix de marché http://aims.fao.org/aos/agrovoc/c_35237 http://aims.fao.org/aos/agrovoc/c_35244 http://aims.fao.org/aos/agrovoc/c_10795 http://aims.fao.org/aos/agrovoc/c_16202 http://aims.fao.org/aos/agrovoc/c_1795 http://aims.fao.org/aos/agrovoc/c_2810 http://aims.fao.org/aos/agrovoc/c_28728 http://aims.fao.org/aos/agrovoc/c_1229 |
author |
Thuriès, Laurent Ganry, Francis Sotamenou, Joël Oliver, Robert Parrot, Laurent Simon, Serge Montange, Denis Fernandes, Paula |
author_facet |
Thuriès, Laurent Ganry, Francis Sotamenou, Joël Oliver, Robert Parrot, Laurent Simon, Serge Montange, Denis Fernandes, Paula |
author_sort |
Thuriès, Laurent |
title |
Cash for trash: An agro-economic value assessment of urban organic materials used as fertilizers in Cameroon |
title_short |
Cash for trash: An agro-economic value assessment of urban organic materials used as fertilizers in Cameroon |
title_full |
Cash for trash: An agro-economic value assessment of urban organic materials used as fertilizers in Cameroon |
title_fullStr |
Cash for trash: An agro-economic value assessment of urban organic materials used as fertilizers in Cameroon |
title_full_unstemmed |
Cash for trash: An agro-economic value assessment of urban organic materials used as fertilizers in Cameroon |
title_sort |
cash for trash: an agro-economic value assessment of urban organic materials used as fertilizers in cameroon |
url |
http://agritrop.cirad.fr/594183/ http://agritrop.cirad.fr/594183/1/2019%20THURIES%20et%20al_CashForTrashAnAgro-economicVal.pdf |
work_keys_str_mv |
AT thurieslaurent cashfortrashanagroeconomicvalueassessmentofurbanorganicmaterialsusedasfertilizersincameroon AT ganryfrancis cashfortrashanagroeconomicvalueassessmentofurbanorganicmaterialsusedasfertilizersincameroon AT sotamenoujoel cashfortrashanagroeconomicvalueassessmentofurbanorganicmaterialsusedasfertilizersincameroon AT oliverrobert cashfortrashanagroeconomicvalueassessmentofurbanorganicmaterialsusedasfertilizersincameroon AT parrotlaurent cashfortrashanagroeconomicvalueassessmentofurbanorganicmaterialsusedasfertilizersincameroon AT simonserge cashfortrashanagroeconomicvalueassessmentofurbanorganicmaterialsusedasfertilizersincameroon AT montangedenis cashfortrashanagroeconomicvalueassessmentofurbanorganicmaterialsusedasfertilizersincameroon AT fernandespaula cashfortrashanagroeconomicvalueassessmentofurbanorganicmaterialsusedasfertilizersincameroon |
_version_ |
1792499853466533888 |