Abstract
Energy has a key role in social-economic development of countries. Efficient use of energy in agriculture is one of the conditions for sustainable production. In this article, evaluation of energy balance and energy indices under dry land farming pumpkin in north of Iran (Guilan province) were investigated. Data were collected from 72 farms by used a face to face questionnaire method during 2011 year in Guilan province. By using of consumed data as inputs and total production as output, and their concern equivalent energy, energy balance and energy indices were calculated. Energy efficiency (energy output to input energy ratio) for seed and fruit in this study were calculated 0.16 and 1.43 respectively; showing the affective use of energy in the agro ecosystems pumpkin production. Energy balance efficiency (production energy to consumption energy ratio) for seed and fruit in this study were calculated 0.09 and 1.54 respectively; showing the affective use of energy in the agro ecosystems pumpkin production.
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