Viabilidade econômica do sistema de barra de luzes comparado ao marcador de espuma em pulverizadores de barra.

Abstract

In order to reduce the costs of the agricultural production it is advisable the usage of the equipaments with GPS system, as light bar (LB), that is adopted and coupled to the spray boom reducing the overlap of the parallel swathing and reducing it in areas without application. The aim of this work was to analyze the economical feasibility of using LB as a target instrument during the spraying of agrochemicals, if you compare this one with the foam marker guidance. To show this viability it was used data from a property locate in Sertaneja city of Paraná state in Brazil during the summer harvest of 2003 and the winter harvest of 2004. It was taken into account the costs of each application and the values were calculated considering the difference between the volumes in the two equipments e the final price of them. Since the results pointed and measured it was noticed the economical viability of the light bar equipment, the return of the usage of this equipment is reached after 2.7 productive cycles, or in 35.2 applications in total area that means 13,816 ha.