Two years of nitrogen and sulfur fertilizations in a signal grass pasture under degradation: changes in the root system
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Zootecnia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600006 |
Resumo: | The objective of this research was to evaluate the effect of combinations of nitrogen and sulfur rates in degraded signal grass (Brachiaria decumbens) pasture on their productive, morphological and nutritional attributes in the root system at four soil depths. The pasture used in the experiment was established over eight years ago in Entisol. Five nitrogen rates (0; 150; 300; 450 and 600 kg/ha/year) and five sulfur rates (0; 15; 30; 45 and 60 kg/ha/year) were combined in a fractionated factorial in a randomized block design, with three replications. Nitrogen was supplied as ammonium nitrate and sulfur as gypsum, and the rates were split into three times in the rainy season. The evaluations occurred at intervals of 35 days during the rainy season and 56 days in the dry season, in two consecutive years. Roots were collected with a 4-cm diameter auger at 0-10; 10-20; 20-30 and 30-40 cm soil depths. It was determined root dry matter, length and surface of the root system and nitrogen and sulfur concentrations in roots. Nitrogen rates applied in two consecutive years in the pasture affected dry mass, length, surface and nitrogen concentration in signal grass root system. Rates of sulfur by themselves or combined with nitrogen rates do not affect attributes of root system. |
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Two years of nitrogen and sulfur fertilizations in a signal grass pasture under degradation: changes in the root systemBrachiaria decumbensdry masslengthnitrogen concentrationsurfaceThe objective of this research was to evaluate the effect of combinations of nitrogen and sulfur rates in degraded signal grass (Brachiaria decumbens) pasture on their productive, morphological and nutritional attributes in the root system at four soil depths. The pasture used in the experiment was established over eight years ago in Entisol. Five nitrogen rates (0; 150; 300; 450 and 600 kg/ha/year) and five sulfur rates (0; 15; 30; 45 and 60 kg/ha/year) were combined in a fractionated factorial in a randomized block design, with three replications. Nitrogen was supplied as ammonium nitrate and sulfur as gypsum, and the rates were split into three times in the rainy season. The evaluations occurred at intervals of 35 days during the rainy season and 56 days in the dry season, in two consecutive years. Roots were collected with a 4-cm diameter auger at 0-10; 10-20; 20-30 and 30-40 cm soil depths. It was determined root dry matter, length and surface of the root system and nitrogen and sulfur concentrations in roots. Nitrogen rates applied in two consecutive years in the pasture affected dry mass, length, surface and nitrogen concentration in signal grass root system. Rates of sulfur by themselves or combined with nitrogen rates do not affect attributes of root system.Sociedade Brasileira de Zootecnia2011-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600006Revista Brasileira de Zootecnia v.40 n.6 2011reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982011000600006info:eu-repo/semantics/openAccessSilveira,Cristiane PrezottoOliveira,Daniela Alves deBonfim-Silva,Edna MariaMonteiro,Francisco Antonioeng2011-07-04T00:00:00Zoai:scielo:S1516-35982011000600006Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2011-07-04T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false |
dc.title.none.fl_str_mv |
Two years of nitrogen and sulfur fertilizations in a signal grass pasture under degradation: changes in the root system |
title |
Two years of nitrogen and sulfur fertilizations in a signal grass pasture under degradation: changes in the root system |
spellingShingle |
Two years of nitrogen and sulfur fertilizations in a signal grass pasture under degradation: changes in the root system Silveira,Cristiane Prezotto Brachiaria decumbens dry mass length nitrogen concentration surface |
title_short |
Two years of nitrogen and sulfur fertilizations in a signal grass pasture under degradation: changes in the root system |
title_full |
Two years of nitrogen and sulfur fertilizations in a signal grass pasture under degradation: changes in the root system |
title_fullStr |
Two years of nitrogen and sulfur fertilizations in a signal grass pasture under degradation: changes in the root system |
title_full_unstemmed |
Two years of nitrogen and sulfur fertilizations in a signal grass pasture under degradation: changes in the root system |
title_sort |
Two years of nitrogen and sulfur fertilizations in a signal grass pasture under degradation: changes in the root system |
author |
Silveira,Cristiane Prezotto |
author_facet |
Silveira,Cristiane Prezotto Oliveira,Daniela Alves de Bonfim-Silva,Edna Maria Monteiro,Francisco Antonio |
author_role |
author |
author2 |
Oliveira,Daniela Alves de Bonfim-Silva,Edna Maria Monteiro,Francisco Antonio |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Silveira,Cristiane Prezotto Oliveira,Daniela Alves de Bonfim-Silva,Edna Maria Monteiro,Francisco Antonio |
dc.subject.por.fl_str_mv |
Brachiaria decumbens dry mass length nitrogen concentration surface |
topic |
Brachiaria decumbens dry mass length nitrogen concentration surface |
description |
The objective of this research was to evaluate the effect of combinations of nitrogen and sulfur rates in degraded signal grass (Brachiaria decumbens) pasture on their productive, morphological and nutritional attributes in the root system at four soil depths. The pasture used in the experiment was established over eight years ago in Entisol. Five nitrogen rates (0; 150; 300; 450 and 600 kg/ha/year) and five sulfur rates (0; 15; 30; 45 and 60 kg/ha/year) were combined in a fractionated factorial in a randomized block design, with three replications. Nitrogen was supplied as ammonium nitrate and sulfur as gypsum, and the rates were split into three times in the rainy season. The evaluations occurred at intervals of 35 days during the rainy season and 56 days in the dry season, in two consecutive years. Roots were collected with a 4-cm diameter auger at 0-10; 10-20; 20-30 and 30-40 cm soil depths. It was determined root dry matter, length and surface of the root system and nitrogen and sulfur concentrations in roots. Nitrogen rates applied in two consecutive years in the pasture affected dry mass, length, surface and nitrogen concentration in signal grass root system. Rates of sulfur by themselves or combined with nitrogen rates do not affect attributes of root system. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600006 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-35982011000600006 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
dc.source.none.fl_str_mv |
Revista Brasileira de Zootecnia v.40 n.6 2011 reponame:Revista Brasileira de Zootecnia (Online) instname:Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ |
instname_str |
Sociedade Brasileira de Zootecnia (SBZ) |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Revista Brasileira de Zootecnia (Online) |
collection |
Revista Brasileira de Zootecnia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ) |
repository.mail.fl_str_mv |
||bz@sbz.org.br|| secretariarbz@sbz.org.br |
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1750318147867508736 |