| Resumo: |
In last twenty years, Algeria has experienced an important agricultural development driven by a prosperous in market gardening in plastic greenhouses due of the favorable climatic conditions and the government’s policy. In aim to optimize the energy requirement and GHG emission, a data have been collected from 29 farmers which present qualitatively of greenhouse vegetable growers from the most productive sub-provinces of Biskra region (south of Algeria). Among the various method parametric and non parametric to optimize the energy consumption, DEA is the most common non parametric method applied. The results revealed, the optimum energy requirements for vegetable greenhouse calculation indicated that, 108.50 GJ ha-1 could be saved distributed on machinery (1.38 GJ ha-1), diesel oil (4.68 GJ ha-1), infrastructure (9.35 GJ ha-1), fertilizers (17.08 GJ ha-1), farmyard manure (12.05 GJ ha-1), pesticides (3.93 GJ ha-1) and electricity (60.03 GJ ha-1). The calculation of total GHG emission provided 4511,410 and 1517,482 kgCO2eq.ha-1 as present and target units, respectively. In this study, applying DEA approach to energy optimization could allow to GHG emission showed reducing the total GHG emission about 2993,928kgCO2eq.ha-1 in vegetable greenhouse production
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