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Inside the studies carried out in the Agricultural Mechanization Center (CEMA), about the organization of the technological service of the agricultural machines. It was carried out a research whose objective is the study of the behavior of the profit time coefficient in the sprinkler machines for citrus, for different conditions operation It was modeled the technological process analytically by means of an automated system that allows to determine the balance of the time consumed by the sprinkler machine groups and transport, and determined the dependence of the profit time coefficient to one or another group, according to the analyzed conditions operation. The results offered that it stops distances until the point of having filled of up to 4 km, the profit time coefficient (Kut) it takes values of 38%, between 50 and 43% and enter 54 and 32% in sprinkler of 1 000, 2 000 and 3 000 L of capacity respectively. [ABSTRACT FROM AUTHOR]

The investigation analyzes the behavior of the price limit of the seedling block transplanter VERSATIL 10 000, like part of the automated system of transplanted and transport seedling block. It was modeled the technological process analytically by means of the automated system SMTTC.xls that allows to determine the price limit on the base of cost per worked area, for different operation conditions and combinations of transplanter group and transport denominated service coefficient. The results offered that the biggest price limit were obtained with service coefficient of four (1 and 2 km) and of two for distances 3, 4 and 5 km, varying the same ones between 12 258,85 and 16 521,76 pesos. [ABSTRACT FROM AUTHOR]