Simulation modeling of management scenarios of livestock manure in urban and periurban zones of Mahajanga, Madagascar

This paper describes the use of a dynamical simulation model, called Magma, to evaluate the management scenarios of livestock manure in urban and periurban zones of Mahajanga, Madagascar. Three scenarios were tested: Scenario 1, corresponding to the current crop fertilization practices; Scenario 2, trying to maximize the use of livestock wastes on crops; and Scenario 3, testing the relocation of in-town animal farms to a rural area. By simulation, it has been showed that to manage more efficiently manures a better organization of transportation means is required. This may lead to avoid the lack of organic matter during the high season of market gardening. Environmental risk related to non-collected manures and to excess organic and chemical fertilizer application should be thoroughly considered.

Bibliographic Details

Main Authors:	Ramahefarison, Heriniaina, Guerrin, François, Paillat, Jean-Marie
Format:	conference_item biblioteca
Language:	eng
Published:	INRA
Subjects:	Q70 - Traitement des déchets agricoles, F04 - Fertilisation, L01 - Élevage - Considérations générales, P02 - Pollution, U10 - Informatique, mathématiques et statistiques,
Online Access:	http://agritrop.cirad.fr/570571/ http://agritrop.cirad.fr/570571/1/document_570571.pdf
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