Influence of calcium: magnesium ratio in limestone on nodulation, dry matter yield and mineral composition of alfalfa
Autor(a) principal: | |
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Data de Publicação: | 1999 |
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/5153 |
Resumo: | This study evaluated the effect of different Ca:Mg ratios on dry matter yield, mineral composition of alfalfa, and nodulation. A dystrophic Dark-Red Latosol (Oxisol) soil was used in the experiment. A randomized design was adapted with five Ca:Mg ratios (1:0; 1:1; 2:1; 3:1 and 4:1) at a recommended limestone dosage of 3.9 t ha-1. An additional treatment was included at a ratio of 3:1 with the dosage of 7.8 t ha-1. All treatments had four replicates in six cutting times. The analyzed variables were dry matter production, concentrations (g kg-1) of N, P, K, Ca, Mg and S in dry matter and weights of fresh and dry nodules. The changes in the ratios of Ca:Mg at the recommended limestone rate did not affect the dry matter production. The highest dry matter yield was obtained in the treatment that used twice the recommended dosage. The concentrations of Ca and Mg in the aerial dry matter were directly proportional to their availability in the soil, while the K concentrations were inversely proportional to the rate Ca applied. No treatment influenced the concentration of P in the aerial dry matter. The concentration of S was influenced by the ratio of Ca:Mg and diminished with increases in Ca. The 4:1 treatment showed the highest concentration of N in the dry matter. The N fixation enhanced as the Ca rate in the soil increased. |
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Influence of calcium: magnesium ratio in limestone on nodulation, dry matter yield and mineral composition of alfalfaInfluência da relação cálcio: magnésio do corretivo na nodulação, produção e composição mineral da alfafacerrado; nodule formation; nodule efficiency; dystrophic Dark-Red Latosol; Oxisol; dry matter; Medicago sativa; nodules; nutrient concentrationcerrado; formação de nódulos; eficiência da nodulação; Latossolo Vermelho-Escuro distrófico; matéria seca; Medicago sativa; nódulos; concentração de nutrientesThis study evaluated the effect of different Ca:Mg ratios on dry matter yield, mineral composition of alfalfa, and nodulation. A dystrophic Dark-Red Latosol (Oxisol) soil was used in the experiment. A randomized design was adapted with five Ca:Mg ratios (1:0; 1:1; 2:1; 3:1 and 4:1) at a recommended limestone dosage of 3.9 t ha-1. An additional treatment was included at a ratio of 3:1 with the dosage of 7.8 t ha-1. All treatments had four replicates in six cutting times. The analyzed variables were dry matter production, concentrations (g kg-1) of N, P, K, Ca, Mg and S in dry matter and weights of fresh and dry nodules. The changes in the ratios of Ca:Mg at the recommended limestone rate did not affect the dry matter production. The highest dry matter yield was obtained in the treatment that used twice the recommended dosage. The concentrations of Ca and Mg in the aerial dry matter were directly proportional to their availability in the soil, while the K concentrations were inversely proportional to the rate Ca applied. No treatment influenced the concentration of P in the aerial dry matter. The concentration of S was influenced by the ratio of Ca:Mg and diminished with increases in Ca. The 4:1 treatment showed the highest concentration of N in the dry matter. The N fixation enhanced as the Ca rate in the soil increased.O objetivo deste trabalho foi avaliar o efeito da relação Ca:Mg do corretivo da acidez do solo na produção de matéria seca, composição mineral da alfafa, e nodulação. O solo utilizado foi um Latossolo Vermelho-Escuro distrófico. Utilizou-se o delineamento inteiramente casualizado em esquema fatorial com seis relações de Ca:Mg (1:0; 1:1; 2:1; 3:1; 4:1, na dosagem de 3,9 t ha-1 do corretivo e uma relação 3:1 na dosagem de 7,8 t ha-1) x seis épocas de corte, com quatro repetições. Mediram-se as produções de matéria seca (MS), teores de N, P, K, Ca, Mg e S na parte aérea, e peso fresco e massa seca dos nódulos, determinados no último corte. As mudanças na relação Ca:Mg não afetaram a produção de MS da alfafa. O dobro da dosagem de calcário recomendada apresentou a maior produção de MS. O teor de Ca e Mg foi diretamente proporcional à sua disponibilidade no solo, ao passo que o K foi inversamente proporcional ao teor de Ca. Não houve influência dos tratamentos nos teores de P. As relações Ca:Mg afetaram os teores de S na matéria seca, os quais foram menores nos tratamentos com maior quantidade de Ca. O tratamento 4:1 apresentou maior teor de N, e as maiores concentração de Ca no solo aumentaram a fixação de N à planta.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraMoreira, AdônisCarvalho, Janice Guedes deEvangelista, Antônio Ricardo1999-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5153Pesquisa Agropecuaria Brasileira; v.34, n.2, fev. 1999; 249-255Pesquisa Agropecuária Brasileira; v.34, n.2, fev. 1999; 249-2551678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5153/2345info:eu-repo/semantics/openAccess2010-07-13T17:47:47Zoai:ojs.seer.sct.embrapa.br:article/5153Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-07-13T17:47:47Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Influence of calcium: magnesium ratio in limestone on nodulation, dry matter yield and mineral composition of alfalfa Influência da relação cálcio: magnésio do corretivo na nodulação, produção e composição mineral da alfafa |
title |
Influence of calcium: magnesium ratio in limestone on nodulation, dry matter yield and mineral composition of alfalfa |
spellingShingle |
Influence of calcium: magnesium ratio in limestone on nodulation, dry matter yield and mineral composition of alfalfa Moreira, Adônis cerrado; nodule formation; nodule efficiency; dystrophic Dark-Red Latosol; Oxisol; dry matter; Medicago sativa; nodules; nutrient concentration cerrado; formação de nódulos; eficiência da nodulação; Latossolo Vermelho-Escuro distrófico; matéria seca; Medicago sativa; nódulos; concentração de nutrientes |
title_short |
Influence of calcium: magnesium ratio in limestone on nodulation, dry matter yield and mineral composition of alfalfa |
title_full |
Influence of calcium: magnesium ratio in limestone on nodulation, dry matter yield and mineral composition of alfalfa |
title_fullStr |
Influence of calcium: magnesium ratio in limestone on nodulation, dry matter yield and mineral composition of alfalfa |
title_full_unstemmed |
Influence of calcium: magnesium ratio in limestone on nodulation, dry matter yield and mineral composition of alfalfa |
title_sort |
Influence of calcium: magnesium ratio in limestone on nodulation, dry matter yield and mineral composition of alfalfa |
author |
Moreira, Adônis |
author_facet |
Moreira, Adônis Carvalho, Janice Guedes de Evangelista, Antônio Ricardo |
author_role |
author |
author2 |
Carvalho, Janice Guedes de Evangelista, Antônio Ricardo |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Moreira, Adônis Carvalho, Janice Guedes de Evangelista, Antônio Ricardo |
dc.subject.por.fl_str_mv |
cerrado; nodule formation; nodule efficiency; dystrophic Dark-Red Latosol; Oxisol; dry matter; Medicago sativa; nodules; nutrient concentration cerrado; formação de nódulos; eficiência da nodulação; Latossolo Vermelho-Escuro distrófico; matéria seca; Medicago sativa; nódulos; concentração de nutrientes |
topic |
cerrado; nodule formation; nodule efficiency; dystrophic Dark-Red Latosol; Oxisol; dry matter; Medicago sativa; nodules; nutrient concentration cerrado; formação de nódulos; eficiência da nodulação; Latossolo Vermelho-Escuro distrófico; matéria seca; Medicago sativa; nódulos; concentração de nutrientes |
description |
This study evaluated the effect of different Ca:Mg ratios on dry matter yield, mineral composition of alfalfa, and nodulation. A dystrophic Dark-Red Latosol (Oxisol) soil was used in the experiment. A randomized design was adapted with five Ca:Mg ratios (1:0; 1:1; 2:1; 3:1 and 4:1) at a recommended limestone dosage of 3.9 t ha-1. An additional treatment was included at a ratio of 3:1 with the dosage of 7.8 t ha-1. All treatments had four replicates in six cutting times. The analyzed variables were dry matter production, concentrations (g kg-1) of N, P, K, Ca, Mg and S in dry matter and weights of fresh and dry nodules. The changes in the ratios of Ca:Mg at the recommended limestone rate did not affect the dry matter production. The highest dry matter yield was obtained in the treatment that used twice the recommended dosage. The concentrations of Ca and Mg in the aerial dry matter were directly proportional to their availability in the soil, while the K concentrations were inversely proportional to the rate Ca applied. No treatment influenced the concentration of P in the aerial dry matter. The concentration of S was influenced by the ratio of Ca:Mg and diminished with increases in Ca. The 4:1 treatment showed the highest concentration of N in the dry matter. The N fixation enhanced as the Ca rate in the soil increased. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999-02-01 |
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/5153 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/5153 |
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/5153/2345 |
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.34, n.2, fev. 1999; 249-255 Pesquisa Agropecuária Brasileira; v.34, n.2, fev. 1999; 249-255 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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1793416700367994880 |