Potassium fertilization for long term no-till crop rotation in the central-southern region of Paraná, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/185897 |
Resumo: | Fertilization programs for annual crops in the state of Paraná, southern Brazil, are based on studies that focused on conventional tillage and were established more than 30 years ago. The primary purpose of this study was to assess potassium (K) fertilization on long-term (>30 years) no-tillage soybean, corn, wheat, and barley crops grown in rotation on Oxisols in the central-southern region of Paraná. A total of 47 experiments were carried out from 2008 to 2013, three of which addressed K calibration and the other 44, crop response to K fertilization. Critical K soil-test value and interpretation classes were established from the ratio between relative crop yield [RY = (yield without K/max yield) × 100] and soil K levels. Winter cereals were found to be more demanding of K than were soybean and corn; also, the former governed critical K soil-test value for crop rotation: 0.23 cmolc dm-3 in the 0.00-0.20 m soil layer. Recommended fertilization rates for soils in the low and medium soil K levels were established by using the build-up approach for soil correction; and those for the high and very high soil K levels were established by removing K at harvest and assessing economic return in crop response experiments. The K rates calculated for the high yield classes exceeded those currently recommended for use in Paraná. |
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Vieira, Renan Costa BeberFontoura, Sandra Mara VieiraBayer, CimelioMoraes, Renato Paulo deCarniel, Eduardo2018-12-05T02:44:03Z20160100-0683http://hdl.handle.net/10183/185897001079534Fertilization programs for annual crops in the state of Paraná, southern Brazil, are based on studies that focused on conventional tillage and were established more than 30 years ago. The primary purpose of this study was to assess potassium (K) fertilization on long-term (>30 years) no-tillage soybean, corn, wheat, and barley crops grown in rotation on Oxisols in the central-southern region of Paraná. A total of 47 experiments were carried out from 2008 to 2013, three of which addressed K calibration and the other 44, crop response to K fertilization. Critical K soil-test value and interpretation classes were established from the ratio between relative crop yield [RY = (yield without K/max yield) × 100] and soil K levels. Winter cereals were found to be more demanding of K than were soybean and corn; also, the former governed critical K soil-test value for crop rotation: 0.23 cmolc dm-3 in the 0.00-0.20 m soil layer. Recommended fertilization rates for soils in the low and medium soil K levels were established by using the build-up approach for soil correction; and those for the high and very high soil K levels were established by removing K at harvest and assessing economic return in crop response experiments. The K rates calculated for the high yield classes exceeded those currently recommended for use in Paraná.application/pdfengRevista brasileira de ciencia do solo. Viçosa. Vol. 40 (set. 2016), [art.] e0150193, 16 p.Rotação de culturaFertilidade do soloFertilizante potassicoCalibrationCritical levelMehlich-1Potassium fertilization for long term no-till crop rotation in the central-southern 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:UFRGSTEXT001079534.pdf.txt001079534.pdf.txtExtracted Texttext/plain55138http://www.lume.ufrgs.br/bitstream/10183/185897/2/001079534.pdf.txt4d1c55e341ae616c013c41f52e80bf7aMD52ORIGINAL001079534.pdfTexto completo (inglês)application/pdf567940http://www.lume.ufrgs.br/bitstream/10183/185897/1/001079534.pdf67081210bf5a144a7a056c3e1b88cf1fMD5110183/1858972018-12-06 02:44:19.973964oai:www.lume.ufrgs.br:10183/185897Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-12-06T04:44:19Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Potassium fertilization for long term no-till crop rotation in the central-southern region of Paraná, Brazil |
title |
Potassium fertilization for long term no-till crop rotation in the central-southern region of Paraná, Brazil |
spellingShingle |
Potassium fertilization for long term no-till crop rotation in the central-southern region of Paraná, Brazil Vieira, Renan Costa Beber Rotação de cultura Fertilidade do solo Fertilizante potassico Calibration Critical level Mehlich-1 |
title_short |
Potassium fertilization for long term no-till crop rotation in the central-southern region of Paraná, Brazil |
title_full |
Potassium fertilization for long term no-till crop rotation in the central-southern region of Paraná, Brazil |
title_fullStr |
Potassium fertilization for long term no-till crop rotation in the central-southern region of Paraná, Brazil |
title_full_unstemmed |
Potassium fertilization for long term no-till crop rotation in the central-southern region of Paraná, Brazil |
title_sort |
Potassium fertilization for long term no-till crop rotation in the central-southern region of Paraná, Brazil |
author |
Vieira, Renan Costa Beber |
author_facet |
Vieira, Renan Costa Beber Fontoura, Sandra Mara Vieira Bayer, Cimelio Moraes, Renato Paulo de Carniel, Eduardo |
author_role |
author |
author2 |
Fontoura, Sandra Mara Vieira Bayer, Cimelio Moraes, Renato Paulo de Carniel, Eduardo |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Vieira, Renan Costa Beber Fontoura, Sandra Mara Vieira Bayer, Cimelio Moraes, Renato Paulo de Carniel, Eduardo |
dc.subject.por.fl_str_mv |
Rotação de cultura Fertilidade do solo Fertilizante potassico |
topic |
Rotação de cultura Fertilidade do solo Fertilizante potassico Calibration Critical level Mehlich-1 |
dc.subject.eng.fl_str_mv |
Calibration Critical level Mehlich-1 |
description |
Fertilization programs for annual crops in the state of Paraná, southern Brazil, are based on studies that focused on conventional tillage and were established more than 30 years ago. The primary purpose of this study was to assess potassium (K) fertilization on long-term (>30 years) no-tillage soybean, corn, wheat, and barley crops grown in rotation on Oxisols in the central-southern region of Paraná. A total of 47 experiments were carried out from 2008 to 2013, three of which addressed K calibration and the other 44, crop response to K fertilization. Critical K soil-test value and interpretation classes were established from the ratio between relative crop yield [RY = (yield without K/max yield) × 100] and soil K levels. Winter cereals were found to be more demanding of K than were soybean and corn; also, the former governed critical K soil-test value for crop rotation: 0.23 cmolc dm-3 in the 0.00-0.20 m soil layer. Recommended fertilization rates for soils in the low and medium soil K levels were established by using the build-up approach for soil correction; and those for the high and very high soil K levels were established by removing K at harvest and assessing economic return in crop response experiments. The K rates calculated for the high yield classes exceeded those currently recommended for use in Paraná. |
publishDate |
2016 |
dc.date.issued.fl_str_mv |
2016 |
dc.date.accessioned.fl_str_mv |
2018-12-05T02:44:03Z |
dc.type.driver.fl_str_mv |
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http://hdl.handle.net/10183/185897 |
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0100-0683 |
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001079534 |
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http://hdl.handle.net/10183/185897 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Revista brasileira de ciencia do solo. Viçosa. Vol. 40 (set. 2016), [art.] e0150193, 16 p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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