SIMBA-N: Modeling nitrogen dynamics in banana populations in wet tropical climate. Application to fertilization management in the Caribbean

Dorel Marc, Achard Raphaël, Tixier Philippe. 2008. SIMBA-N: Modeling nitrogen dynamics in banana populations in wet tropical climate. Application to fertilization management in the Caribbean. European Journal of Agronomy, 29 (1) : 38-45.

Résumé : In banana plantations of the Caribbean, nitrogen (N) fertilization widely exceeds nutrient outputs after harvest. Underwet tropical climate, leaching results in considerablewaste of N. Fertilization management aims at maintaining soil mineralNat the optimal level for banana nutrition throughout the year but it does not take into account variations in crop N demand or N supply through mineralization of crop residues. The dynamics of crop N demand and crop residue supply depend on the structure of banana populations, which become asynchronous with time. We designed the SIMBA-N model to simulate N dynamics in successive crop cycles of banana. The model calculates the N balance weekly, including N uptake by banana, N leaching, and N supply by organic matter mineralization. We validated the model using data from a field experiment comparing five levels of fertilization. Results showed SIMBA-N provides reliable indicators to support banana fertilization management taking into account N flows in the soil and change in N demand related to banana population structure.

Mots-clés Agrovoc : Musa (bananes), fertilisation, résidu de récolte, modélisation des cultures, modèle de simulation, azote, sol volcanique, facteur climatique, facteur édaphique, lessivage du sol

Mots-clés géographiques Agrovoc : Guadeloupe, France

Classification Agris : F04 - Fertilisation
U10 - Informatique, mathématiques et statistiques
F01 - Culture des plantes

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Dorel Marc, CIRAD-PERSYST-UPR Systèmes bananes et ananas (GLP)
• Achard Raphaël, CIRAD-PERSYST-UPR Systèmes bananes et ananas (MTQ)
• Tixier Philippe, CIRAD-PERSYST-UPR Systèmes bananes et ananas (MTQ) ORCID: 0000-0001-5147-9777

Source : Cirad - Agritrop (https://agritrop.cirad.fr/544190/)

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