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Idesia (Arica)

versión On-line ISSN 0718-3429

Resumen

DE SOUZA, Jacimar Luis; D. CASALI, Vicente Wagner; S. SANTOS, Ricardo Henrique  y  CECON, Paulo Roberto. Plastic packages threaten the energetic efficiency of vegetable crop organic systems. Idesia [online]. 2011, vol.29, n.1, pp.7-14. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292011000100002.

Vegetable crop organic production is frequently directed to markets where the package standards are the expanded polystyrene tray and polyethylene plastic films. Nevertheless, plastics are energetically expensive and are environmental pollutants. This study aimed to evaluate the energetic costs and the share of the package in the organic production system of 10 vegetable crops. Field data were collected at the organic agriculture experimental area of INCAPER, Domingos Martins - ES, from 1991 to 2000. The energetic quantification consisted of the transformation of tools, inputs, yield and services into equivalent energy units. The organic system required an average of 1,906,302 kcal ha-1 as a package, out of a total cost of 4,571,159 kcal ha-1. The package share of the energetic cost ranged from 4.6% in squash production to 57.4% in tomato production. The package was responsible for an average of 35.8% of the energetic cost of the production of 10 vegetable crops. The elimination of package costs would strongly reduce the energetic costs, increasing the mean energetic balance of 2.84 to 5.18.

Palabras clave : Organic agriculture; polystyrene; polyethylene; energetic balance.

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