Metodologias para contabilização de perdas em colheita de arroz irrigado (Oryza sativa L.)

Abstract

Harvesting is one of the most important stages in the grain production process, however, it is also one of the most difficult activities to do because most losses occur at this stage. Quantifying the losses to reduce them is essential, and in irrigated rice there are few methods for data collection. This work aimed to evaluate two methods of crop losses in the irrigated rice crop (Oryza sativa L.). To evaluate the losses in the mechanized harvest, a completely randomized design was used in a 2x16 factorial scheme, with the treatments being two methods and sixteen collection points. The methods used were the canvas attached to the bottom of the machine and that of the carton inserted in the back of the harvester by its passage, with the canvas method representing 10 m² and the box representing 1 m² of the area. The grains and panicles were collected, separated from the vegetable mass and weighed in a digital scale, and later the extrapolation of the data in kilos per hectare. It is concluded that the losses do not differ between the methods and that for practicality and rapid response the cash method is alternative to quantify losses in irrigated rice.