TESTE DE PLANTABILIDADE COM DIFERENTES DISCOS ALVEOLADOS E A INFLUÊNCIA DA VELOCIDADE NA SEMEADURA DA SOJA

Abstract

Since the formation of civilizations there has been agriculture, being one of the main responsible for the development of these peoples. It is also noteworthy that the sowers are the implements that have undergone the most alterations over time, showing their great importance both in cultivation and in the technological study. Soybean is one of the most important crops within the national and world scenario, being considered a commodity, Seed distribution is one of the most important factors in production. Its precision is mainly related to seed-dosing mechanisms, which are components of the seeder. The most used dosing scans are pneumatic and mechanical. As has already been said there is an increase in the types of discs and the need for improvements in sowing performance. Some modern technologies promise to improve the ergonomics of sowing to the detriment of conventional discs. Among them are dp impact and rampflow technologies. Discs with DP Impacto technology® promise better seed distribution, reducing doubles, breaks and failures with their discs with tapered holes. Discs with patented RampFlow® technology, promote the innovation of ripples in the holes ramp enhance the slide of seeds, avoiding double seeds and failures. At sowing to be satisfactory performance of the seed-dosing mechanisms must have a sowing speed indicated by the manufacturer, within a tolerant range. Speeds higher than indicated may cause poor seed distribution. . The plantability can be explained by coma efficiency during sowing both in depth of the seeds and in relation to the distance between them in the rows and between rows, and also of their speed. The experiment was conducted in the Laboratory of Prototypes of Machines of the State University of Goiás - Anápolis Campus, using a sower line prototype, being elaborated by Cruvinel. For the experiment, the design in DBC (Randomized Block Design) was used. It was developed in a 3x2 factorial scheme, totaling 6 treatments, combining three types of different disc technology at 2 different speeds. The three discs used in the conventional disc sower prototype, DP Impacto and Rampflow®. In view of the above, it can be concluded that the planability and performance of the dosing discs analyzed were not influenced by speed. However, with the increase in speed, an increase in the coefficient of variation was observed for all the dosing discs analyzed.