EVALUATION OF FIVE SUGAR CANE PLANTERS

摘要

Brazil is the world biggest producer of sugar cane with an area of 5.3x106 hectares. Mainly the system used for planting is the semi-mechanized one, which consists in opening the furrows with a machine, manually allocating the fractioned stalks and then covering the furrows done by the machines. The great amount of human labor used in the semi-mechanized system is becoming harder to find and also more expensive, indicating the need of a fully mechanized operation. Currently in Brazil these agriculture machines industries offers six different types of fully mechanized sugar cane planters (two types of whole stalks for planting and four using mechanized harvested stalks known as billets). All of them plant in two furrows simultaneously in 1.5m row spacing. This study analyzed five different machines and the following variables: Working Speed (km/h); Effective Capacity (ha/h), Drawbar Force (kgf), Draw Bar Power (In HP), Fuel Consumption (L/h) and Costs (US$/ha) comparing them with the semi-mechanizedsystem. This research also characterized the stalks for planting as viable gems number (%), non viable gems number (%) and billet length (m). And for last the mechanized planting system is cheaper than the conventional one and none of the machines has an adequate mechanism for placing the right amount of sugar cane seed.