Potassium, calcium and magnesium nutritional requirements of sweet sorghum
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/13915 |
Resumo: | A field experiment was conducted in Pelotas (1983/84), RS, Brazil, with the following objectives: (a) evaluate potassium, calcium and magnesium, mineral nutrition requirements of sweet sorghum, (b) distribution of these elements in the plant, (c) luxury consumption of K, and (d) to verify the combined effect of potassium fertilization/absorption by the crop on the available K in the soil. Four treatments of K2O (zero, 50, 100 and 150 kg/ha) were used. All plots received 120 kg/ha of N, 100 kg/ha of P2O5 and 2 t/ha of limestone at seeding time. The cultivar used was BR-501 with a stand of 140,000 plants/ha and the crop was harvested 127 days after emergence. Plants were separated into the following components: leaves, stalks, panicles and plant residues. Potassium, calcium and magnesium were determined in the samples. The following conclusions were reached: (a) to produce 60.4 t/ha of fresh stalks + leaves, 116 kg/ha of K, 54 kg/ha of Ca and 91 kg/ha of Mg are needed; (b) content of K is higher in stalks, while Ca and Mg were higher in leaves; (c) K, depending on the K2O rate, (produces) synergistic or antagonistic effects on the Ca and Mg; (d) high luxury consumption of K occurs, accumulating mainly in stalks and finally, (e) to avoid K deficiency in soil, sorghum leaves should be left in the field or incorporation of vinasse (rich in K) is recommended. |
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Potassium, calcium and magnesium nutritional requirements of sweet sorghumExigências nutricionais em potássio, cálcio e magnésio do sorgo sacarinoK; Ca; Mg; interelationships; distribution; luxury consumption of potassiumK; Ca; Mg; interrelações; distribuição; "consumo de luxo" de KA field experiment was conducted in Pelotas (1983/84), RS, Brazil, with the following objectives: (a) evaluate potassium, calcium and magnesium, mineral nutrition requirements of sweet sorghum, (b) distribution of these elements in the plant, (c) luxury consumption of K, and (d) to verify the combined effect of potassium fertilization/absorption by the crop on the available K in the soil. Four treatments of K2O (zero, 50, 100 and 150 kg/ha) were used. All plots received 120 kg/ha of N, 100 kg/ha of P2O5 and 2 t/ha of limestone at seeding time. The cultivar used was BR-501 with a stand of 140,000 plants/ha and the crop was harvested 127 days after emergence. Plants were separated into the following components: leaves, stalks, panicles and plant residues. Potassium, calcium and magnesium were determined in the samples. The following conclusions were reached: (a) to produce 60.4 t/ha of fresh stalks + leaves, 116 kg/ha of K, 54 kg/ha of Ca and 91 kg/ha of Mg are needed; (b) content of K is higher in stalks, while Ca and Mg were higher in leaves; (c) K, depending on the K2O rate, (produces) synergistic or antagonistic effects on the Ca and Mg; (d) high luxury consumption of K occurs, accumulating mainly in stalks and finally, (e) to avoid K deficiency in soil, sorghum leaves should be left in the field or incorporation of vinasse (rich in K) is recommended. Com os objetivos de avaliar as exigências do sorgo sacarino (Sorghum bicolor L.) em K, Ca e Mg, suas distribuições nos vários órgãos da planta, "consumo de luxo" em potássio e efeito conjugado da adubação potássica/extração pela cultura sobre o K "disponível" do solo foi conduzido um experimento no ano agrícola 82/83. Foram testadas quatro doses de K2O (zero, 50, 100 e 150 kg/ha, como KCl). Todas as parcelas foram submetidas a uma adubação com 120 kg/ha de N (uréia) e 100 kg/ha de P2O5 (superfosfato triplo) e uma calagem (1/2 SMP) com 2 t/ha de corretivo da acidez. Foi utilizada a cultivar BR-501, ajustando-se uma população de 140.000 plantas por hectare. Por ocasião da colheita amostraram-se cinco plantas por parcela, as quais foram desmembradas em folhas, colmos, panículas e órgãos residuais, sendo secadas, pesadas e procedidas determinações de K, Ca e Mg. Foi concluído que: para produzir 60,4 t/ha de colmos frescos não desfolhados, são exigidos 116 kg K/ha, 54 kg Ca/ha e 91 kg Mg/ha; o K acumula-se em maior quantidade nos colmos, enquanto que o Ca e o Mg nas folhas; o K, dependendo da dose, exerce efeitos sinergísticos sobre as quantidades de Ca e Mg das folhas; há um acentuado "consumo de luxo" em K, sendo o colmo o principal órgão acumulador; para se evitar um esgotamento do K do solo, as folhas devem ser deixadas na lavoura ou, então, o vinhoto deve ser adicionado às áreas exploradas. Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraAlves, Antonio CarlosBrauner, Jorge LuisCordeiro, Daltro SilvaZonta, Élio PauloCorrea, Luís Antonio Veríssimo2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/13915Pesquisa Agropecuaria Brasileira; v.23, n.5, maio 1988; 529-536Pesquisa Agropecuária Brasileira; v.23, n.5, maio 1988; 529-5361678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13915/7899info:eu-repo/semantics/openAccess2014-09-11T19:26:02Zoai:ojs.seer.sct.embrapa.br:article/13915Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-09-11T19:26:02Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Potassium, calcium and magnesium nutritional requirements of sweet sorghum Exigências nutricionais em potássio, cálcio e magnésio do sorgo sacarino |
title |
Potassium, calcium and magnesium nutritional requirements of sweet sorghum |
spellingShingle |
Potassium, calcium and magnesium nutritional requirements of sweet sorghum Alves, Antonio Carlos K; Ca; Mg; interelationships; distribution; luxury consumption of potassium K; Ca; Mg; interrelações; distribuição; "consumo de luxo" de K |
title_short |
Potassium, calcium and magnesium nutritional requirements of sweet sorghum |
title_full |
Potassium, calcium and magnesium nutritional requirements of sweet sorghum |
title_fullStr |
Potassium, calcium and magnesium nutritional requirements of sweet sorghum |
title_full_unstemmed |
Potassium, calcium and magnesium nutritional requirements of sweet sorghum |
title_sort |
Potassium, calcium and magnesium nutritional requirements of sweet sorghum |
author |
Alves, Antonio Carlos |
author_facet |
Alves, Antonio Carlos Brauner, Jorge Luis Cordeiro, Daltro Silva Zonta, Élio Paulo Correa, Luís Antonio Veríssimo |
author_role |
author |
author2 |
Brauner, Jorge Luis Cordeiro, Daltro Silva Zonta, Élio Paulo Correa, Luís Antonio Veríssimo |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Alves, Antonio Carlos Brauner, Jorge Luis Cordeiro, Daltro Silva Zonta, Élio Paulo Correa, Luís Antonio Veríssimo |
dc.subject.por.fl_str_mv |
K; Ca; Mg; interelationships; distribution; luxury consumption of potassium K; Ca; Mg; interrelações; distribuição; "consumo de luxo" de K |
topic |
K; Ca; Mg; interelationships; distribution; luxury consumption of potassium K; Ca; Mg; interrelações; distribuição; "consumo de luxo" de K |
description |
A field experiment was conducted in Pelotas (1983/84), RS, Brazil, with the following objectives: (a) evaluate potassium, calcium and magnesium, mineral nutrition requirements of sweet sorghum, (b) distribution of these elements in the plant, (c) luxury consumption of K, and (d) to verify the combined effect of potassium fertilization/absorption by the crop on the available K in the soil. Four treatments of K2O (zero, 50, 100 and 150 kg/ha) were used. All plots received 120 kg/ha of N, 100 kg/ha of P2O5 and 2 t/ha of limestone at seeding time. The cultivar used was BR-501 with a stand of 140,000 plants/ha and the crop was harvested 127 days after emergence. Plants were separated into the following components: leaves, stalks, panicles and plant residues. Potassium, calcium and magnesium were determined in the samples. The following conclusions were reached: (a) to produce 60.4 t/ha of fresh stalks + leaves, 116 kg/ha of K, 54 kg/ha of Ca and 91 kg/ha of Mg are needed; (b) content of K is higher in stalks, while Ca and Mg were higher in leaves; (c) K, depending on the K2O rate, (produces) synergistic or antagonistic effects on the Ca and Mg; (d) high luxury consumption of K occurs, accumulating mainly in stalks and finally, (e) to avoid K deficiency in soil, sorghum leaves should be left in the field or incorporation of vinasse (rich in K) is recommended. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/13915 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/13915 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/13915/7899 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.23, n.5, maio 1988; 529-536 Pesquisa Agropecuária Brasileira; v.23, n.5, maio 1988; 529-536 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416659851018240 |