This work aims to evaluate the energy consumption of the mechanized operations involved in the silage production of entire plant and silage of humid maize, having as reference the dry processing of this cereal. The experiment was on Lageado Experimental Farm of the Agronomy School, and the Education Research and Production Farm, of the Veterinary School of - UNESP - Sao Paulo State University - Botucatu Campus. The experiment design was in randomized blocks with parts subdivided in time (three times of harvest: silage of entire plant, silage of humid grains and harvest of dry grains), with 10 repetitions. The statistical analyses were performed with ESTAT software, and Tukey test at 5% of probability. The highest fuel consumption per area was reported for the ensilage of entire plant. The highest energy demand per area was reported for the processing of dry grain, as drying is responsible for 87% of the energy expense. The ensilage of humid grain demanded the lesser use of energy per area in the mechanized operations.
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