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Soil compaction in areas of maize used for silage with the application of wastewater Rev. Ciênc. Agron.
Melo,Dirceu de; Nóbrega,Lúcia Helena Pereira; Maggi,Marcio Furlan; Gnoatto,Estor; Marchetti,Ivair.
ABSTRACT The mechanical resistance of the soil to penetration (RP) was evaluated over two consecutive years in areas where off-season maize is produced for silage. Removal of the aerial part of the maize during the ensiling process leaves the soil exposed and subject to compaction, which may compromise a no-till system (NTS). The aim of this study therefore, was to monitor the RP of a soil under plant cover associated with the application of wastewater from pig farming (WPF) in areas of maize ensiling under NTS. The study was conducted in Matelândia, in the State of Paraná, employing seven management systems: soybean/silage/oats and turnip (SSOT); soybean/oats and turnip (SOT); soybean/silage/scarification + oats and turnip (SSSOT); soybean/silage and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mechanical resistance of the soil to penetration; Crop rotation; Systems of soil management.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000200205
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Correlation between 2,4-D herbicide residues and soil attributes in southern of Brazil Rev. Ciênc. Agron.
Baumgartner,Denilson; Souza,Eduardo Godoy de; Coelho,Silvia Renata Machado; Maggi,Marcio Furlan.
ABSTRACT The 2,4-D herbicide is widely used in Brazilian and global agriculture to control weeds. It is potentially toxic to mankind, and one of the herbicides final destinations is the soil. The aim of the study was to determine the spatial correlation of 2,4-D herbicide in soil attributes after 12 months of application. The experiment was conducted in an agricultural area of 5.04 ha in the municipality of Nova Santa Rosa/PR, in 2011 and 2012. Two soil samples collections were performed: collection 1 (09/03/2011) and collection 2 (08/25/2012), both of which were made 12 months after 2,4-D application. The herbicide was applied in a single dose of 1.5 L ha-1 in 09/2010 and in two doses in 09/2011 (1.0 L ha-1or 1.5 L ha-1 2,4-D). The correlation between...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agrochemicals; Weeds; Spatial distribution.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000300428
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Productivity of soybean in management zones with application of different sowing densities Ciência Rural
Camicia,Rafaela Greici da Motta; Maggi,Marcio Furlan; Souza,Eduardo Godoy de; Bazzi,Claudio Leones; Konopatzki,Evandro André; Michelon,Gabriela Karoline; Pinheiro,José Bruno Santos.
ABSTRACT: The present study aimed to assess the efficiency of sowing at variable rates for soybean cultivation in two management zones (MZs) which were defined based on stable attributes and correlated with productivity using the Fuzzy C-means clustering algorithm and the kriging interpolation.Seeding was carried out in the 2015/2016 and 2017/2018 crops with a variation of 20% of seeds and crop row spacing of 0.70m. In each MZ, 8 plots with higher and lower seed density were established. Productivity was measured using a harvest monitor connected to a harvester. Data were filtered and submitted to descriptive analysis. Productivity maps were generated using the inverse square distance interpolation for each seeding density. In the MZ with the highest...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Precision agriculture; Grain production; Management zones.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001200201
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