Applying of DEA approach to optimize the energy required and GHG emission for greenhouse vegetable production in Algeria

Abstract

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