Ruzigrass affecting soil-phosphorus availability
Autor(a) principal: | |
---|---|
Data de Publicação: | 2013 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S0100-204X2013001200007 http://hdl.handle.net/11449/110130 |
Resumo: | The objective of this work was to evaluate the effectiveness of ruzigrass (Urochloaruziziensis) in enhancing soil-P availability in areas fertilized with soluble or reactive rock phosphates. The area had been cropped for five years under no-till, in a system involving soybean, triticale/black-oat, and pearl millet. Previously to the five-year cultivation period, corrective phosphorus fertilization was applied once on soil surface, at 0.0 and 80 kg ha-1 P2O5, as triple superphosphate or Arad rock phosphate. After this five-year period, plots received the same corrective P fertilization as before and ruzigrass was introduced to the cropping system in the stead of the other cover crops. Soil samples were taken (0-10 cm) after ruzigrass cultivation and subjected to soil-P fractionation. Soybean was grown thereafter without P application to seed furrow. Phosphorus availability in plots with ruzigrass was compared to the ones with spontaneous vegetation for two years. Ruzigrass cultivation increased inorganic (resin-extracted) and organic (NaHCO3) soil P, as well as P concentration in soybean leaves, regardless of the P source. However, soybean yield did not increase significantly due to ruzigrass introduction to the cropping system. Soil-P availability did not differ between soluble and reactive P sources. Ruzigrass increases soil-P availability, especially where corrective P fertilization is performed. |
id |
UNSP_3d06c1f276540f023858d9cfeb3ee6ec |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/110130 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Ruzigrass affecting soil-phosphorus availabilityEfeito da braquiária sobre a disponibilidade de fósforo no soloBrachiaria ruziziensisUrochloa ruziziensiscultivos de coberturarotação de culturasciclagem de Pfracionamento de fósforoBrachiaria ruziziensisUrochloa ruziziensiscover cropscrop rotationP cyclingphosphorus fractionationThe objective of this work was to evaluate the effectiveness of ruzigrass (Urochloaruziziensis) in enhancing soil-P availability in areas fertilized with soluble or reactive rock phosphates. The area had been cropped for five years under no-till, in a system involving soybean, triticale/black-oat, and pearl millet. Previously to the five-year cultivation period, corrective phosphorus fertilization was applied once on soil surface, at 0.0 and 80 kg ha-1 P2O5, as triple superphosphate or Arad rock phosphate. After this five-year period, plots received the same corrective P fertilization as before and ruzigrass was introduced to the cropping system in the stead of the other cover crops. Soil samples were taken (0-10 cm) after ruzigrass cultivation and subjected to soil-P fractionation. Soybean was grown thereafter without P application to seed furrow. Phosphorus availability in plots with ruzigrass was compared to the ones with spontaneous vegetation for two years. Ruzigrass cultivation increased inorganic (resin-extracted) and organic (NaHCO3) soil P, as well as P concentration in soybean leaves, regardless of the P source. However, soybean yield did not increase significantly due to ruzigrass introduction to the cropping system. Soil-P availability did not differ between soluble and reactive P sources. Ruzigrass increases soil-P availability, especially where corrective P fertilization is performed.O objetivo deste trabalho foi avaliar a eficácia da braquiária (Urochloa ruziziensis) em aumentar a disponibilidade de P, em solo de áreas fertilizadas com fosfatos solúveis ou reativos. A área havia sido cultivada em semeadura direta por cinco anos, em sistema de cultivo com soja, triticale/aveia-preta e milheto. Previamente ao período de cinco anos de cultivo, aplicou-se adubação corretiva de P à superfície do solo, com 0,0 ou 80,0 kg ha-1 P2O5, nas formas de superfosfato triplo ou fosfato Arad. Após esse período de cinco anos, as parcelas receberam a mesma adubação corretiva de antes, e a braquiária foi introduzida no sistema de cultivo no lugar das outras plantas de cobertura. Após o cultivo da braquiária, foram coletadas amostras de solo, na camada 0-10 cm, e submetidas ao fracionamento de P. A soja foi cultivada em seguida, sem adubação fosfatada no sulco de plantio. A disponibilidade de P nas parcelas com a braquiária foi comparada àquelas com vegetação espontânea, por dois anos. O cultivo da braquiária aumentou os teores de P inorgânico (extraído com resina) e orgânico (NaHCO3) no solo, bem como o conteúdo de P nas folhas da soja, independentemente da fonte de P utilizada. No entanto, a produtividade da soja não aumentou significativamente pela introdução da braquiária ao sistema de cultivo. A braquiária aumenta a disponibilidade de P no solo, especialmente nas áreas com adubação fosfatada corretiva.Universidade Estadual Paulista Departamento de FitotecniaUniversidade Estadual Paulista IFAS Indian River Research and Education CenterUniversidade Estadual Paulista Departamento de FitotecniaUniversidade Estadual Paulista IFAS Indian River Research and Education CenterEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Estadual Paulista (Unesp)Merlin, Alexandre [UNESP]He, Zhenli Li [UNESP]Rosolem, Ciro Antonio [UNESP]2014-10-01T13:08:51Z2014-10-01T13:08:51Z2013-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1583-1588application/pdfhttp://dx.doi.org/10.1590/S0100-204X2013001200007Pesquisa Agropecuária Brasileira. Embrapa Informação TecnológicaPesquisa Agropecuária Brasileira, v. 48, n. 12, p. 1583-1588, 2013.0100-204Xhttp://hdl.handle.net/11449/11013010.1590/S0100-204X2013001200007S0100-204X2013001200007WOS:000334021700007S0100-204X2013001200007.pdf57207758732595280000-0003-2001-0874SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPesquisa Agropecuária Brasileira0.546info:eu-repo/semantics/openAccess2024-04-30T15:56:02Zoai:repositorio.unesp.br:11449/110130Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:41:10.419579Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Ruzigrass affecting soil-phosphorus availability Efeito da braquiária sobre a disponibilidade de fósforo no solo |
title |
Ruzigrass affecting soil-phosphorus availability |
spellingShingle |
Ruzigrass affecting soil-phosphorus availability Merlin, Alexandre [UNESP] Brachiaria ruziziensis Urochloa ruziziensis cultivos de cobertura rotação de culturas ciclagem de P fracionamento de fósforo Brachiaria ruziziensis Urochloa ruziziensis cover crops crop rotation P cycling phosphorus fractionation |
title_short |
Ruzigrass affecting soil-phosphorus availability |
title_full |
Ruzigrass affecting soil-phosphorus availability |
title_fullStr |
Ruzigrass affecting soil-phosphorus availability |
title_full_unstemmed |
Ruzigrass affecting soil-phosphorus availability |
title_sort |
Ruzigrass affecting soil-phosphorus availability |
author |
Merlin, Alexandre [UNESP] |
author_facet |
Merlin, Alexandre [UNESP] He, Zhenli Li [UNESP] Rosolem, Ciro Antonio [UNESP] |
author_role |
author |
author2 |
He, Zhenli Li [UNESP] Rosolem, Ciro Antonio [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Merlin, Alexandre [UNESP] He, Zhenli Li [UNESP] Rosolem, Ciro Antonio [UNESP] |
dc.subject.por.fl_str_mv |
Brachiaria ruziziensis Urochloa ruziziensis cultivos de cobertura rotação de culturas ciclagem de P fracionamento de fósforo Brachiaria ruziziensis Urochloa ruziziensis cover crops crop rotation P cycling phosphorus fractionation |
topic |
Brachiaria ruziziensis Urochloa ruziziensis cultivos de cobertura rotação de culturas ciclagem de P fracionamento de fósforo Brachiaria ruziziensis Urochloa ruziziensis cover crops crop rotation P cycling phosphorus fractionation |
description |
The objective of this work was to evaluate the effectiveness of ruzigrass (Urochloaruziziensis) in enhancing soil-P availability in areas fertilized with soluble or reactive rock phosphates. The area had been cropped for five years under no-till, in a system involving soybean, triticale/black-oat, and pearl millet. Previously to the five-year cultivation period, corrective phosphorus fertilization was applied once on soil surface, at 0.0 and 80 kg ha-1 P2O5, as triple superphosphate or Arad rock phosphate. After this five-year period, plots received the same corrective P fertilization as before and ruzigrass was introduced to the cropping system in the stead of the other cover crops. Soil samples were taken (0-10 cm) after ruzigrass cultivation and subjected to soil-P fractionation. Soybean was grown thereafter without P application to seed furrow. Phosphorus availability in plots with ruzigrass was compared to the ones with spontaneous vegetation for two years. Ruzigrass cultivation increased inorganic (resin-extracted) and organic (NaHCO3) soil P, as well as P concentration in soybean leaves, regardless of the P source. However, soybean yield did not increase significantly due to ruzigrass introduction to the cropping system. Soil-P availability did not differ between soluble and reactive P sources. Ruzigrass increases soil-P availability, especially where corrective P fertilization is performed. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-12-01 2014-10-01T13:08:51Z 2014-10-01T13:08:51Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S0100-204X2013001200007 Pesquisa Agropecuária Brasileira. Embrapa Informação TecnológicaPesquisa Agropecuária Brasileira, v. 48, n. 12, p. 1583-1588, 2013. 0100-204X http://hdl.handle.net/11449/110130 10.1590/S0100-204X2013001200007 S0100-204X2013001200007 WOS:000334021700007 S0100-204X2013001200007.pdf 5720775873259528 0000-0003-2001-0874 |
url |
http://dx.doi.org/10.1590/S0100-204X2013001200007 http://hdl.handle.net/11449/110130 |
identifier_str_mv |
Pesquisa Agropecuária Brasileira. Embrapa Informação TecnológicaPesquisa Agropecuária Brasileira, v. 48, n. 12, p. 1583-1588, 2013. 0100-204X 10.1590/S0100-204X2013001200007 S0100-204X2013001200007 WOS:000334021700007 S0100-204X2013001200007.pdf 5720775873259528 0000-0003-2001-0874 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Pesquisa Agropecuária Brasileira 0.546 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1583-1588 application/pdf |
dc.publisher.none.fl_str_mv |
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) |
publisher.none.fl_str_mv |
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128686794211328 |