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metadata.artigo.dc.title: Characterization of the transverse distribution of fertilizer in coffee plantations
metadata.artigo.dc.creator: Andrade, Alan Delon
Ferraz, Gabriel Araújo e Silva
Barros, Murilo Machado de
Faria, Rafael De Oliveira
Silva, Fábio Moreira da
Sarri, Daniele
Vieri, Marco
metadata.artigo.dc.subject: Centrifugal spreader
Fertilizer distribution uniformity
Coffee plantations - Fertilizers
Espalhador centrífugo
Uniformidade de distribuição de fertilizantes
Cafeicultura - Fertilizantes
metadata.artigo.dc.publisher: MDPI 2020
metadata.artigo.dc.identifier.citation: ANDRADE, A. D. et al. Characterization of the transverse distribution of fertilizer in coffee plantations. Agronomy, [S. l.], v. 10, n. 4, 601, 2020. DOI: 10.3390/agronomy10040601.
metadata.artigo.dc.description.abstract: Considering the impact of fertilizers on coffee production costs, the search for greater efficiency in the use of these inputs has an important role. Accordingly, the aim of the present study is to evaluate the transverse distribution of fertilizer by a centrifugal spreader in a coffee plantation and to compare two operating modes: fertilizer application on one side (FA1), or both sides (FA2) of the coffee plants. In addition, three doses (200, 300 and 400 kg ha−1) of monoammonium phosphate and three spreading disk rotation speeds (240, 375 and 750 rpm) were tested. To characterize fertilizer distribution profiles, collectors were placed under the canopy of coffee plants, and the collected fertilizer was weighed. From the data obtained, distribution profile histograms were constructed, and coefficients of variation were calculated for each treatment. Distribution profiles with higher uniformity were related to the morphologic characteristics of the coffee plants. Regarding the operating modes evaluated, FA1 presented better results with a disk rotation speed of 750 rpm (FA1-W3); FA2 produced the best results with a disk rotation speed of 240 rpm. By relating these results with information on root morphology, FA1-W3 was found to be the most appropriate application method.
metadata.artigo.dc.language: en_US
Appears in Collections:DEG - Artigos publicados em periódicos

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