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In Brazil, there are several crops producing oil for biofuel production, such as canola, sunflower, peanut, cotton, castor bean, soybean, among others. There are parameters that indicate the energetic and economic viability for the production of biofuels, and that can be applied, for example, in transgenic soybeans. The present study aimed to evaluate the energetic viability of Intacta RR2 PROTM soybean for biofuel production.Experiments were conducted in the municipalities of Palotina and Marechal Cândido Rondon, both in the State of Paraná. Energy balance calculations were carried out from the production system, estimating energy expenditure, including the agricultural and industrial stages. The inputs used were considered as input of energy, while grain production, as output of energy. The energy balance of soybean biofuel showed positive values in the treatments with lower doses up to the recommended doses, highlighting the treatment glyphosate at 720 g.e.a. per hectare, which reached a positive energy balance (1: 1.11) for both municipalities. However, the Intacta RR2 PRO TM soybean was sensitive to treatments with high doses of glyphosate, which impaired productivity and consequently generated low economic returns.

Bioenergetics Potential of RR2 PRO Transgenic Soybean Subjected to Application of Herbicides Isolated and in Combination