Development of a multi-criteria evaluation of agroecological practices involving soil biodiversity, agronomic performance and farmer perception
Résumé
An experiment has been designed in the Highlands of Madagascar with
the aim to produce multi-criteria indicators of performance of
agroecological practices. In this experiment, different traditional
and innovative practices were tested in field conditions with the
assumption that practices that enhance soil biodiversity and soil
ecological processes are the one that best promote plant production,
yield and sustainability. Both ecological and agronomic performances
were confronted with socio-economic performance defined by farmers in
order to propose innovative practices adoptable by farmers.
A 2-year field experiment with 16 different practices, replicated 4
times, was designed in the Highlands of Madagascar with upland rice
as the main crop. Many soil and plant parameters were measured: 73
parameters to describe soil biodiversity and soil ecological
processes, 19 descriptors to measure rice production, nutrition and
yield, and 8 socio-economic descriptors.
This study led to the production of a useful indicator allowing to
evaluate an agroecological practice on the way it promotes soil health
and especially soil biodiversity, crop yield and socio-economical
requirements which are the main limits for practice adoption. We
measured interesting relations between soil ecological descriptors
and agronomic descriptors.
Domaines
Science des sols
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