Open Access
Cah. Agric.
Volume 23, Number 3, Mai-Juin 2014
Page(s) 195 - 204
Section Études originales / Original Studies
Published online 01 May 2014

© Cirad 2014

Licence Creative Commons
This is an Open Access article distributed under the terms of the Creative Commons Attribution License CC-BY-NC (, which permits unrestricted use, distribution, and reproduction in any medium, except for commercial purposes, provided the original work is properly cited.