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In a rice establishment of the province of Corrientes was evaluated an axial combine equipped with a head of 25 feet draper system. Four treatments were carried on: head 625D Combine at 3 km/h (T1), at 3.5 km/h (T2), 4 km/h (T3) and 4.5 km/h (T4). The variables under study were grain losses, grain mechanical damage and noise. Mechanical damage was determinated in four locations: draper, auger feeders axial cylinder, grain wheel and grain tank. The determination of noise was with standards suggested by the Institute of Rural Engineering INTA Castelar. Conclusions: 1) Damage to the grain is primarily responsible auger feeder mechanism. 2) The draper was working efficiently with minimal damage. 3) Feeding systems (head) and the axial threshing showed no saturation even at the highest speeds of 4.5 km/h. 4) From the 3.2 km/h the system of separation and cleaning began to show saturation. 5) The sound inside the cabin was not over the standards. [ABSTRACT FROM AUTHOR]

This research was conducted in areas the Agro-Industrial Grains Enterprise "Los Palacios", located in the province of Pinar del Río in order to determine the coefficient of reliability of operation in its chronometric and of cost variants for the Claas Dominator combine in the conditions of production. [ABSTRACT FROM AUTHOR]

The work was developed in the University of Granma, Cuba, with the objective of obtaining a combined machine for the located minimum tillage of heavy soils, in cane of sugar and other plantations in arrays, constituted by active organs (milling drums and vibratory harrows) and listers. This machine was conceived in the University of Granma and developed in the Center of Development of the Agricultural Machinery (CEDEMA) of Holguín province. The tests were carried out in the "Arquimímides Colina" Sugar Company of Granma province, in harvested cane fields with burns and without burns later of the crop remains, of flat relief, with compacted alluvial and vertisoil soils, the "Multitill UDG-3,2" machine aggregate formed with a Belorussian tractor of the mark T-150K. Starting from the technical task the constructive project of the machine was elaborated, by means of which was carried out its construction and later on you proceeded to its evaluation, appreciating you among its advantages that it diminishes the number of passes of equiment of five or six until one, avoiding the overtill and the deterioration of the structure of the soil; the new technology allows a better soil conservation, since besides the before signal, it is leaves on the soil surface a 30 to 50% of the vegetable remains; in the economic evaluation it is appreciated a productivity of 1 ha/h, the fuel cost is of 31 peso/ ha and 36,6 L/ha respectively. In the work the structure of the "Multitill UDG-3,2"machine is shown, as well as its operation and the quality of the work, they offer its main technical characteristics. [ABSTRACT FROM AUTHOR]