Análise do nível de ruído que o tratorista está exposto em prática de preparo periódico do solo com trator de pneu.

Abstract

The agricultural wheel tractor is a source of power used to quite a larse extent in smsll and intermediate agricultural industries from soil tillage to harvest and transportation operations, performing these operations cheãper and more efficient1y. During periodical soil tillage operatians, this tractor transmites hight level of noise to the driver increasing the sound pailuition level. To search the quanti ty of noise to wich the tractor driver is exposed, it was evaluated the noise leveis in plowing, disking andfurrowing operations. This work was performed with wheel tractor in a distrofic yellow latosol covered with sugarcane ratoon. The results pointed out noise leveis higher than the highest levei recammended by legislatíon to a daiíy maximum exposure, in the three operations accomplished. In no th plowing and furrowing operations, the noise leveis were equivalent and a Jittle bit higher than the noise levei in the disking operation.