Agritrop
Accueil

Optimization of biomass and compost management to sustain soil organic matter in energy cane cropping systems in a tropical polluted soil: A modelling study

Sierra Jorge, Chopart Jean-Louis, Guindé Loïc, Blazy Jean Marc. 2016. Optimization of biomass and compost management to sustain soil organic matter in energy cane cropping systems in a tropical polluted soil: A modelling study. BioEnergy Research, 9 (3) : 798-808.

Article de revue ; Article de revue à facteur d'impact
[img] Version publiée - Anglais
Accès réservé aux personnels Cirad
Utilisation soumise à autorisation de l'auteur ou du Cirad.
Chopart.pdf

Télécharger (1MB) | Demander une copie
[img] Version Online first - Anglais
Accès réservé aux personnels Cirad
Utilisation soumise à autorisation de l'auteur ou du Cirad.
optimization of biomas...10.1007_s12155-016-9729-z.pdf

Télécharger (885kB) | Demander une copie

Quartile : Q2, Sujet : ENVIRONMENTAL SCIENCES / Quartile : Q2, Sujet : ENERGY & FUELS

Résumé : In French West Indies, the high dependency of the electricity mix on imported fossil fuels has led local authorities to propose the conversion of some land to the production of energy cane. This conversion mainly concerns land polluted by the pesticide chlordecone, where most crops for human consumption have been banned. This molecule has a strong affinity for soil organic matter (SOM). The aims of this study were to assess the impact of crop residue management and compost application on the stocks of SOM and chlordecone in soils cultivated with energy cane and to determine the minimum SOM input required to maintain SOM stocks. A field experiment was conducted to determine the yield and biomass partitioning of energy cane, and laboratory incubations were performed to estimate humification from crop residues. Changes in SOM and chlordecone stocks over a 30-year period were investigated using models already calibrated for the land under study. Non-harvestable biomass left on the field (tops, litterfall and roots) covered >60 % of SOM mineralization. A full offset of mineralization required the return of 10 % of harvestable biomass or the application of compost at a rate of 40 Mg ha−1 every 5 years. With the total removal of harvestable biomass and without compost applications, SOM and chlordecone losses increased by 23 and 13 %, respectively, which was associated with high SOM mineralization and chlordecone leaching under tropical climate. The estimated break-even price for cane biomass indicated that compost application would be more profitable for farmers than the return of a part of the harvestable biomass.

Mots-clés Agrovoc : Saccharum officinarum, plante énergétique, biomasse, résidu de récolte, compost, matière organique du sol, sol pollué, chlordécone, lutte antipollution, propriété physicochimique du sol, zone tropicale, modèle mathématique, modèle de simulation, expérimentation au champ, expérimentation en laboratoire, gestion des déchets agricoles, agriculture durable, système de culture, coût, fertilité du sol

Mots-clés géographiques Agrovoc : Antilles françaises, Guadeloupe, France

Classification Agris : F04 - Fertilisation
P36 - Érosion, conservation et récupération des sols
F08 - Systèmes et modes de culture
P06 - Sources d'énergie renouvelable
P35 - Fertilité du sol

Champ stratégique Cirad : Axe 2 (2014-2018) - Valorisation de la biomasse

Auteurs et affiliations

  • Sierra Jorge, INRA (GLP)
  • Chopart Jean-Louis, CIRAD-PERSYST-UPR AIDA (GLP)
  • Guindé Loïc, INRA (GLP)
  • Blazy Jean Marc, INRA (GLP)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/580293/)

Voir la notice (accès réservé à Agritrop) Voir la notice (accès réservé à Agritrop)

[ Page générée et mise en cache le 2024-01-28 ]