Resumo

OLIVET RODRIGUEZ, Yosvel Enrique  e  COBAS HERNANDEZ, Daimara. Energetic balance of two farming tools in a Fluvisol for the cultivation of sweet potato (Ipomoea batatas Lam). Rev Cie Téc Agr [online]. 2013, vol.22, n.2, pp.21-25. ISSN 2071-0054.

This research work was carried out at the agricultural farm “Ranulfo Leyva Pacheco” which belongs to the enterprise of multiple cultivations “Paquito Rosales Benítez”. The soil preparation process for the cultivation of sweet potato not only alters soil physical properties but also leads to high energy consumption, especially in the labor of soil tillage with disk plow, in which it is consumed a great percentage of fuel. The objective of this work has been to evaluate an alternative farming implement of vertical and horizontal cut to the traditional with disk plow in soil ploughing, which allows reducing energy consumption of the process under the conditions of a Fluvisol and also Carbon Dioxide emissions that reach to the atmosphere. The treatments considered have been traditional soil ploughing, T1. It consisted in ploughing the soil with the ADI-3M disk plow, and soil ploughing, T2, which consisted in ploughing the soil with a multi-plowing machine. Treatment T2 presented less direct use energy consumption (0,83 GJ ha^-1) and indirect use energy consumption (0,08 GJ ha^-1), with a total consumption of 0,91 GJ ha^-1, causing the 66% reduction of CO₂ emissions, motivated by a 69% reduction of fuel consumption (20,2 L ha^-1) regarding the ploughing with disk plow with 29,2 L ha^-1 under the same soil and climatic conditions

Palavras-chave : soil; climate; atmosphere; energy consumption; CO₂ emissions.

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