Metodologias para análises de perdas na colheita mecanizada de soja

Abstract

The soybean crop is responsible for more than half of the cultivated land in the country, in this way the cost reduce and the production increase are possible for the improvemente of the efficiency of the mechanized harvest through the reduction of the waste. The present paper aims to evaluate the losses in the mechanized harvest of soybean comparing different methodologies of employing unique forms of sample areas and location of the sampling, with two harvesters (C1 and C2) and speeds of displacement. The work was carried out in a commercial farm, using three methodologies of collection, rectangular frame, circular frame, and square frame, with different harvesters in three speeds of displacement (5, 6 and 7 km h-¹). For each treatment, 10 samples were collected, adding up 180 samples. Data was analyzed with descriptive statistics, analysis of variance and quality control. Results showed that rectangular method of evaluation of losses is the most recommended for the collection of losses in the harvest due to its greater fidelity and the harvester C1 is more efficient than C2 in the highest speed 7 km h-¹.