Navegando por Autor "Gimenes, Gustavo Rodrigues"

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    Velocidade do pulverizador na variabilidade espacial dos movimentos da barra de aplicação e deposição de calda
    (Universidade Estadual do Norte do Paraná, 2015) Gimenes, Gustavo Rodrigues; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Abi-Saab, Otavio Jorge Grígoli; https://orcid.org/0000-0002-1757-636X; http://lattes.cnpq.br/8437035647330384; Reis, Luiz Carlos; https://orcid.org/0000-0003-2193-8535; http://lattes.cnpq.br/4310404758664835; Gandolfo, Marco Antônio; https://orcid.org/0000-0003-2314-3752; http://lattes.cnpq.br/5560552732033631; Reis, Teresinha Esteves da Silveira; https://orcid.org/0000-0001-6379-4790; http://lattes.cnpq.br/5705088234641018
    Operational parameters, such as the travel speed of the tractor/sprayer set and physical characteristics of the area, such as relief irregularities, may influence spray boom oscillation and spray deposition, affecting application quality. In this study, the spatial variability of relief, vertical boom movements of a sprayer operating at two travel speeds, and the effect on the spatial variability of spray deposition were evaluated. Elevation data for construction of the digital terrain model (DTM) were obtained using a total station, and boom movement was assessed via digital videography. To determine deposition, the bright blue marker FDC‑1 (0.6%, m v⁻¹) was added to the spray tank, and its absorbance was measured by spectrophotometry. Descriptive statistics, spatial analysis (geostatistics), and GIS techniques were applied for data analysis. The results indicate spatial dependence in deposition between the two speeds (1.725 m s⁻¹ and 2.736 m s⁻¹), with increased deposition at the higher speed, while elevation did not influence deposition at either speed.