| The contribution of organic olive
growing, especially on dryland, to non renewable energy saving in Andalusia
is considerable. It is feasible to cut down further on the unnecessary
use of machinery for soil preparation and weed control to improve energetic
The current situation of worldwide concern over the emission of greenhouse gases and its effect on the climate demands an evaluation, from the perspective of energy efficiency and more specifically of non-renewable energy sources, of tendencies for change in the management of agricultural systems which have arisen in recent years. In this context, Gloria I. Guzmán and Antonio M. Alonso, from the Research and Training Centre for Organic Farming and Rural Development of Granada (Spain) have evaluated the contribution of organic olive growing to the increase in the energy efficiency of Mediterranean agriculture, distinguished according to type of watering regime and intensiveness of cultivation. The research work has been supported by the European Commission, the Education and Science Ministry of Spain and the Innovation, Science and Enterprise Department of Andalusia Government.
The results show, on one side, the lower energy efficiency of irrigated land as opposed to dryland (i.e. non-irrigated) regardless of their style of management and, on the other, the greater non-renewable energy efficiency of organic olive growing in comparison with the conventional production. Nevertheless, organic management could still improve its energy efficiency if it further adjusts and internalizes the flows of nutrients needed in order to achieve greater sustainability.
Towards energetic self-sufficiency