Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/13679
Title: Avaliação de um sistema de aplicação de fertilizantes a taxa variável adaptado à cultura cafeeira
Other Titles: Evaluation of a variable rate fertilizer application system adpted to coffee crop
Authors: Barros, Murilo Machado de
Volpato, Carlos Eduardo Silva
Silva, Flávio Castro da
Palma, Marcos Antônio Zambillo
Spagnolo, Roger Toscan
Keywords: Cafeicultura
Agricultura de precisão
Coffee tillage
Aplicação em doses variáveis
Precision agriculture
Variable doses application
Issue Date: 2015
Citation: BARROS, M. M. de et al. Avaliação de um sistema de aplicação de fertilizantes a taxa variável adaptado à cultura cafeeira. Coffee Science, Lavras, v. 10, n. 2, p. 223 - 232, abr./jun. 2015.
Abstract: An extremely important factor in the production of coffee and other crops is the distribution of fertilizers on the soil, because the efficient use of this technique may increase productivity, reduces production costs and environmental impacts. Precision Agriculture is an important tool to be used, that aids the achievement of localized and rational application of fertilizers, increasing the management activities. The aim of this research was to evaluate the operational performance of a fertilizer application system at variable rate and to create evaluation parameters for coffee crop. Three types of tests were performed: The Cross-Deposition Test, in order to determine the machine’s maximum distribution range and to observe the effects of speed and doses changes; The Longitudinal Deposition Test, in order to determine the machine’s distribution characteristics along the displacement line, and analyze the application behavior on both sides of distribution; The Work Regime Test in order to check the distribution behavior of the machine in real field conditions. We observed that the variation of doses and speeds haven’t affected the precision of the distribution system. There was variation at the system’s application between right and left sides. The system application at variable rate in real field conditions showed a mean error of -3.31%. Therefore, the methodology used is possible to evaluate the variables present in the fertilizers application in coffee production.
URI: http://repositorio.ufla.br/jspui/handle/1/13679
http://www.coffeescience.ufla.br/index.php/Coffeescience/article/view/859
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