Nitrogen fertilization of no-tillage winter cereals in the south-central region of Paraná, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/185154 |
Resumo: | High winter cereal yields depend on an adequate supply of nitrogen (N). We developed a system for indicating N rates for wheat and barley in the South-Central region of the state of Paraná, Brazil, using results of 72 field experiments conducted from 2007 to 2012. The N rates recommended for winter cereals were estimated to supply the amounts of N fertilizer needed to obtain increasing yields (<3.5, 3.5-4.5, 4.5-5.5, and >5.5 Mg ha-1) of crops grown after soybean and corn on soils with a variable organic matter content (<40, 40-60, and >60 g dm-3). The apparent mineralization rate of soil N was estimated to be 1 % and the N fertilization efficiency 50 %. The N rates recommended for wheat ranged from 30 to 150 kg ha-1 when cultivated after soybean, and from 30 to 170 kg ha-1 after corn. The N rates for barley ranged from 30 to 120 kg ha-1 when grown after soybean, and from 30 to 130 kg ha-1 after corn. These N rates are consistent with those indicated by the Soil Fertility Commission for the states of Rio Grande do Sul and Santa Catarina (CQFS-RS/SC, 2016), and also with the rates of maximum economic efficiency estimated in our study. The proposed N rate recommendation system can be used by agricultural technicians and producers to manage N fertilization of wheat and barley in the South-Central region of Paraná, Brazil. |
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Fontoura, Sandra Mara VieiraViero, FernandoMoraes, Renato Paulo deBayer, Cimelio2018-11-28T02:45:30Z20170100-0683http://hdl.handle.net/10183/185154001079506High winter cereal yields depend on an adequate supply of nitrogen (N). We developed a system for indicating N rates for wheat and barley in the South-Central region of the state of Paraná, Brazil, using results of 72 field experiments conducted from 2007 to 2012. The N rates recommended for winter cereals were estimated to supply the amounts of N fertilizer needed to obtain increasing yields (<3.5, 3.5-4.5, 4.5-5.5, and >5.5 Mg ha-1) of crops grown after soybean and corn on soils with a variable organic matter content (<40, 40-60, and >60 g dm-3). The apparent mineralization rate of soil N was estimated to be 1 % and the N fertilization efficiency 50 %. The N rates recommended for wheat ranged from 30 to 150 kg ha-1 when cultivated after soybean, and from 30 to 170 kg ha-1 after corn. The N rates for barley ranged from 30 to 120 kg ha-1 when grown after soybean, and from 30 to 130 kg ha-1 after corn. These N rates are consistent with those indicated by the Soil Fertility Commission for the states of Rio Grande do Sul and Santa Catarina (CQFS-RS/SC, 2016), and also with the rates of maximum economic efficiency estimated in our study. The proposed N rate recommendation system can be used by agricultural technicians and producers to manage N fertilization of wheat and barley in the South-Central region of Paraná, Brazil.application/pdfengRevista brasileira de ciencia do solo. Viçosa. Vol. 41 (nov. 2017), [art.] e0170009, 16 p.TrigoCevadaAdubação nitrogenadaCultura de invernoFertilidade do soloPlantio diretoTriticum aestivumHordeum vulgare L.N indicationUreaNitrogen fertilization of no-tillage winter cereals in the south-central region of Paraná, Brazilinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001079506.pdf.txt001079506.pdf.txtExtracted Texttext/plain47003http://www.lume.ufrgs.br/bitstream/10183/185154/2/001079506.pdf.txt98a4e9469607178478f1a66fd9f78264MD52ORIGINAL001079506.pdfTexto completo (inglês)application/pdf756132http://www.lume.ufrgs.br/bitstream/10183/185154/1/001079506.pdff90ac042543e107eee94394613401dfaMD5110183/1851542018-11-29 02:46:29.160124oai:www.lume.ufrgs.br:10183/185154Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-11-29T04:46:29Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Nitrogen fertilization of no-tillage winter cereals in the south-central region of Paraná, Brazil |
title |
Nitrogen fertilization of no-tillage winter cereals in the south-central region of Paraná, Brazil |
spellingShingle |
Nitrogen fertilization of no-tillage winter cereals in the south-central region of Paraná, Brazil Fontoura, Sandra Mara Vieira Trigo Cevada Adubação nitrogenada Cultura de inverno Fertilidade do solo Plantio direto Triticum aestivum Hordeum vulgare L. N indication Urea |
title_short |
Nitrogen fertilization of no-tillage winter cereals in the south-central region of Paraná, Brazil |
title_full |
Nitrogen fertilization of no-tillage winter cereals in the south-central region of Paraná, Brazil |
title_fullStr |
Nitrogen fertilization of no-tillage winter cereals in the south-central region of Paraná, Brazil |
title_full_unstemmed |
Nitrogen fertilization of no-tillage winter cereals in the south-central region of Paraná, Brazil |
title_sort |
Nitrogen fertilization of no-tillage winter cereals in the south-central region of Paraná, Brazil |
author |
Fontoura, Sandra Mara Vieira |
author_facet |
Fontoura, Sandra Mara Vieira Viero, Fernando Moraes, Renato Paulo de Bayer, Cimelio |
author_role |
author |
author2 |
Viero, Fernando Moraes, Renato Paulo de Bayer, Cimelio |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Fontoura, Sandra Mara Vieira Viero, Fernando Moraes, Renato Paulo de Bayer, Cimelio |
dc.subject.por.fl_str_mv |
Trigo Cevada Adubação nitrogenada Cultura de inverno Fertilidade do solo Plantio direto |
topic |
Trigo Cevada Adubação nitrogenada Cultura de inverno Fertilidade do solo Plantio direto Triticum aestivum Hordeum vulgare L. N indication Urea |
dc.subject.eng.fl_str_mv |
Triticum aestivum Hordeum vulgare L. N indication Urea |
description |
High winter cereal yields depend on an adequate supply of nitrogen (N). We developed a system for indicating N rates for wheat and barley in the South-Central region of the state of Paraná, Brazil, using results of 72 field experiments conducted from 2007 to 2012. The N rates recommended for winter cereals were estimated to supply the amounts of N fertilizer needed to obtain increasing yields (<3.5, 3.5-4.5, 4.5-5.5, and >5.5 Mg ha-1) of crops grown after soybean and corn on soils with a variable organic matter content (<40, 40-60, and >60 g dm-3). The apparent mineralization rate of soil N was estimated to be 1 % and the N fertilization efficiency 50 %. The N rates recommended for wheat ranged from 30 to 150 kg ha-1 when cultivated after soybean, and from 30 to 170 kg ha-1 after corn. The N rates for barley ranged from 30 to 120 kg ha-1 when grown after soybean, and from 30 to 130 kg ha-1 after corn. These N rates are consistent with those indicated by the Soil Fertility Commission for the states of Rio Grande do Sul and Santa Catarina (CQFS-RS/SC, 2016), and also with the rates of maximum economic efficiency estimated in our study. The proposed N rate recommendation system can be used by agricultural technicians and producers to manage N fertilization of wheat and barley in the South-Central region of Paraná, Brazil. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017 |
dc.date.accessioned.fl_str_mv |
2018-11-28T02:45:30Z |
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http://hdl.handle.net/10183/185154 |
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http://hdl.handle.net/10183/185154 |
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eng |
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eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Revista brasileira de ciencia do solo. Viçosa. Vol. 41 (nov. 2017), [art.] e0170009, 16 p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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