Fertilization response and potassium availability for soybean in oxisol
Autor(a) principal: | |
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Data de Publicação: | 1997 |
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/4749 |
Resumo: | The soil, when intensively cultivated with soybean-wheat double-cropping system during several growing seasons, has the available K (fixed and specifically adsorbed K) reserves depleted after some years of cropping. This causes soil K deficiency for crops and yield reduction. The objective of this work was to study the soybean response to K fertilization, and the residual effect on soybean yields, on leaf and soil K content. The experiment was run with soybean during the growing seasons 1983/84 through 1992/93 in a 'Latossolo Roxo eutrófico' (Eutrorthox) in Londrina, Paraná State, Brazil. In the first five years rates of zero, 40, 80, 120, 160 and 200 kg/ha/year of K2O were applied. After ten years of experimentation it was concluded that in the 'Latossolos Roxos eutróficos' of high fertility, even with high K availability the soybean cannot be cultivated for more than two years without K fertilization, with high probability to have limitations to obtain maximum yields. The K maintenance of 80 kg/ha/year of K2O is not enough and in five years of double-cropping almost depleted the soil-K. The fertilization should be at least 120 kg/ha of K2O for soybean and 160 kg/ha/year of K2O for the soybean-wheat double-cropping system to keep top yields of 3,000 to 3,500 kg/ha. Soybean high yields, over 3,000 kg/ha, were associated with K in the leaf tissue higher than 17.1 g/kg. |
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Fertilization response and potassium availability for soybean in oxisolResposta da soja à adubação e disponibilidade de potássio em Latossolo Roxo eutróficoGlycine max; residual effect; broadcast fertilizationadubação potássica; Glycine max; efeito residualThe soil, when intensively cultivated with soybean-wheat double-cropping system during several growing seasons, has the available K (fixed and specifically adsorbed K) reserves depleted after some years of cropping. This causes soil K deficiency for crops and yield reduction. The objective of this work was to study the soybean response to K fertilization, and the residual effect on soybean yields, on leaf and soil K content. The experiment was run with soybean during the growing seasons 1983/84 through 1992/93 in a 'Latossolo Roxo eutrófico' (Eutrorthox) in Londrina, Paraná State, Brazil. In the first five years rates of zero, 40, 80, 120, 160 and 200 kg/ha/year of K2O were applied. After ten years of experimentation it was concluded that in the 'Latossolos Roxos eutróficos' of high fertility, even with high K availability the soybean cannot be cultivated for more than two years without K fertilization, with high probability to have limitations to obtain maximum yields. The K maintenance of 80 kg/ha/year of K2O is not enough and in five years of double-cropping almost depleted the soil-K. The fertilization should be at least 120 kg/ha of K2O for soybean and 160 kg/ha/year of K2O for the soybean-wheat double-cropping system to keep top yields of 3,000 to 3,500 kg/ha. Soybean high yields, over 3,000 kg/ha, were associated with K in the leaf tissue higher than 17.1 g/kg.O cultivo intensivo de soja e trigo, com baixa ou nenhuma adubação de manutenção, esgota a disponibilidade de K no solo no decorrer dos anos, causando redução na produtividade dessas culturas. O objetivo deste trabalho foi estudar a resposta da soja à adubação com K, o efeito residual dessa adubação sobre o rendimento de grãos de soja e sobre os teores de K nas folhas e no solo. Nos anos agrícolas de 1983/84 a 1992/93, foi conduzido um experimento com soja, num Latosolo Roxo eutrófico(LRe). Nos primeiros cinco anos foram aplicadas as doses de zero, 40, 80, 120, 160 e 200 kg/ha/ano de K2O, no sulco de semeadura e a lanço. Após dez anos de experimentação, concluiu-se que os Latossolos Roxos, de alta fertilidade, mesmo os que apresentam alta disponibilidade de K, não podem ser cultivados por mais de dois anos com soja sem aplicação de K, pois isto limitaria a produtividade. A adubação de manutenção com apenas 80 kg/ha de K2O num período de cinco anos diminui as reservas do solo. Para manter produtividades de 3.000 a 3.500 kg/ha, a adubação deve ser de 120 kg/ha de K2O para a soja e de 160 kg/ha/ano de K2O para a sucessão soja-trigo. Somente a soja com teor de K nas folhas acima de 17,1 g/kg alcançou produtividade em torno de 3.000 kg/ha.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraBorkert, Clóvis ManuelSfredo, Gedi JorgeFarias, José Renato BouçasTutida, FábioSpoladori, Cláudio Luis1997-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/4749Pesquisa Agropecuaria Brasileira; v.32, n.10, out. 1997; 1009-1022Pesquisa Agropecuária Brasileira; v.32, n.10, out. 1997; 1009-10221678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/4749/7282info:eu-repo/semantics/openAccess2015-03-27T18:07:56Zoai:ojs.seer.sct.embrapa.br:article/4749Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2015-03-27T18:07:56Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Fertilization response and potassium availability for soybean in oxisol Resposta da soja à adubação e disponibilidade de potássio em Latossolo Roxo eutrófico |
title |
Fertilization response and potassium availability for soybean in oxisol |
spellingShingle |
Fertilization response and potassium availability for soybean in oxisol Borkert, Clóvis Manuel Glycine max; residual effect; broadcast fertilization adubação potássica; Glycine max; efeito residual |
title_short |
Fertilization response and potassium availability for soybean in oxisol |
title_full |
Fertilization response and potassium availability for soybean in oxisol |
title_fullStr |
Fertilization response and potassium availability for soybean in oxisol |
title_full_unstemmed |
Fertilization response and potassium availability for soybean in oxisol |
title_sort |
Fertilization response and potassium availability for soybean in oxisol |
author |
Borkert, Clóvis Manuel |
author_facet |
Borkert, Clóvis Manuel Sfredo, Gedi Jorge Farias, José Renato Bouças Tutida, Fábio Spoladori, Cláudio Luis |
author_role |
author |
author2 |
Sfredo, Gedi Jorge Farias, José Renato Bouças Tutida, Fábio Spoladori, Cláudio Luis |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Borkert, Clóvis Manuel Sfredo, Gedi Jorge Farias, José Renato Bouças Tutida, Fábio Spoladori, Cláudio Luis |
dc.subject.por.fl_str_mv |
Glycine max; residual effect; broadcast fertilization adubação potássica; Glycine max; efeito residual |
topic |
Glycine max; residual effect; broadcast fertilization adubação potássica; Glycine max; efeito residual |
description |
The soil, when intensively cultivated with soybean-wheat double-cropping system during several growing seasons, has the available K (fixed and specifically adsorbed K) reserves depleted after some years of cropping. This causes soil K deficiency for crops and yield reduction. The objective of this work was to study the soybean response to K fertilization, and the residual effect on soybean yields, on leaf and soil K content. The experiment was run with soybean during the growing seasons 1983/84 through 1992/93 in a 'Latossolo Roxo eutrófico' (Eutrorthox) in Londrina, Paraná State, Brazil. In the first five years rates of zero, 40, 80, 120, 160 and 200 kg/ha/year of K2O were applied. After ten years of experimentation it was concluded that in the 'Latossolos Roxos eutróficos' of high fertility, even with high K availability the soybean cannot be cultivated for more than two years without K fertilization, with high probability to have limitations to obtain maximum yields. The K maintenance of 80 kg/ha/year of K2O is not enough and in five years of double-cropping almost depleted the soil-K. The fertilization should be at least 120 kg/ha of K2O for soybean and 160 kg/ha/year of K2O for the soybean-wheat double-cropping system to keep top yields of 3,000 to 3,500 kg/ha. Soybean high yields, over 3,000 kg/ha, were associated with K in the leaf tissue higher than 17.1 g/kg. |
publishDate |
1997 |
dc.date.none.fl_str_mv |
1997-10-01 |
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/4749 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/4749 |
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/4749/7282 |
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.32, n.10, out. 1997; 1009-1022 Pesquisa Agropecuária Brasileira; v.32, n.10, out. 1997; 1009-1022 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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1793416664905154560 |