Absorção e níveis críticos de fósforo na parte aérea da mamoneira cultivada em diferentes classes de solos
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.5433/1679-0359.2014v35n1p239 http://hdl.handle.net/11449/117589 |
Resumo: | Soil that has a high degree of weathering, with more inorganic P bound to Fe and Al oxides, has less P availability to plants. Thus, the critical element of a plant refers to the level below which the growth rate and plant production decreases, demonstrating the need for supplementary fertilization. Accordingly, an experiment was conducted in a greenhouse at Embrapa Algodao with the objective of evaluating the response of castor plants to five doses of P in four types of soil with different adsorption characteristics and critical levels of foliar P. The experimental design was completely randomized in a 4 x 5 factorial design, four types of soil and 5 levels of P with four replications. For TCo, there was an increase in height growth, with dose of 229.6 mg dm(-3) responsible for maximum plant height (74.3 cm). The largest diameter stem (17.58 mm) was observed in CXve with an application of 229.6 mg dm(-3) of P; a decrease was seen when using higher doses. The increase in leaf area was smaller in RY (4724.8 cm(2)), where it was obtained with a dose of 280.2 mg dm(-3). In general, critical levels of P in the plant shoots did not vary much between the soils. The critical level of P in castor bean shoot dry mass was higher (4.61 g kg(-1)) in TCo, this result being directly related to the low clay content of the soil. |
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Absorção e níveis críticos de fósforo na parte aérea da mamoneira cultivada em diferentes classes de solosAbsorption and critical levels of phosphorus in castor bean shoots grown in different soil classesAvailabilityplantsphosphoruscastor beanSoil that has a high degree of weathering, with more inorganic P bound to Fe and Al oxides, has less P availability to plants. Thus, the critical element of a plant refers to the level below which the growth rate and plant production decreases, demonstrating the need for supplementary fertilization. Accordingly, an experiment was conducted in a greenhouse at Embrapa Algodao with the objective of evaluating the response of castor plants to five doses of P in four types of soil with different adsorption characteristics and critical levels of foliar P. The experimental design was completely randomized in a 4 x 5 factorial design, four types of soil and 5 levels of P with four replications. For TCo, there was an increase in height growth, with dose of 229.6 mg dm(-3) responsible for maximum plant height (74.3 cm). The largest diameter stem (17.58 mm) was observed in CXve with an application of 229.6 mg dm(-3) of P; a decrease was seen when using higher doses. The increase in leaf area was smaller in RY (4724.8 cm(2)), where it was obtained with a dose of 280.2 mg dm(-3). In general, critical levels of P in the plant shoots did not vary much between the soils. The critical level of P in castor bean shoot dry mass was higher (4.61 g kg(-1)) in TCo, this result being directly related to the low clay content of the soil.Dr Empresa Brasileira Pesquisa Agr, EMBRAPA, Ctr Nacl Pesquisa Algodao, Campina Grande, PB, BrazilFCA UNESP, Fac Ciencias Agron, Botucatu, SP, BrazilEMBRAPA, Ctr Nacl Pesquisa Algodao, Campina Grande, PB, BrazilFCA UNESP, Fac Ciencias Agron, Programa Pos Grad Agr, Botucatu, SP, BrazilFCA UNESP, Fac Ciencias Agron, Botucatu, SP, BrazilFCA UNESP, Fac Ciencias Agron, Programa Pos Grad Agr, Botucatu, SP, BrazilUniv Estadual LondrinaEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Estadual Paulista (Unesp)Brito Neto, Jose Felix deBüll, Leonardo Theodoro [UNESP]Macedo Beltrao, Napoleao Esberard deRigon, Joao Paulo Gonsiorkiewicz [UNESP]Sofiatti, Valdinei2015-03-18T15:56:31Z2015-03-18T15:56:31Z2014-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article239-249application/pdfhttp://dx.doi.org/10.5433/1679-0359.2014v35n1p239Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 35, n. 1, p. 239-249, 2014.1676-546Xhttp://hdl.handle.net/11449/11758910.5433/1679-0359.2014v35n1p239WOS:000340334000020WOS000340334000020.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSemina-ciencias Agrarias0.349info:eu-repo/semantics/openAccess2024-04-30T19:28:29Zoai:repositorio.unesp.br:11449/117589Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:27:09.140762Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Absorção e níveis críticos de fósforo na parte aérea da mamoneira cultivada em diferentes classes de solos Absorption and critical levels of phosphorus in castor bean shoots grown in different soil classes |
title |
Absorção e níveis críticos de fósforo na parte aérea da mamoneira cultivada em diferentes classes de solos |
spellingShingle |
Absorção e níveis críticos de fósforo na parte aérea da mamoneira cultivada em diferentes classes de solos Brito Neto, Jose Felix de Availability plants phosphorus castor bean |
title_short |
Absorção e níveis críticos de fósforo na parte aérea da mamoneira cultivada em diferentes classes de solos |
title_full |
Absorção e níveis críticos de fósforo na parte aérea da mamoneira cultivada em diferentes classes de solos |
title_fullStr |
Absorção e níveis críticos de fósforo na parte aérea da mamoneira cultivada em diferentes classes de solos |
title_full_unstemmed |
Absorção e níveis críticos de fósforo na parte aérea da mamoneira cultivada em diferentes classes de solos |
title_sort |
Absorção e níveis críticos de fósforo na parte aérea da mamoneira cultivada em diferentes classes de solos |
author |
Brito Neto, Jose Felix de |
author_facet |
Brito Neto, Jose Felix de Büll, Leonardo Theodoro [UNESP] Macedo Beltrao, Napoleao Esberard de Rigon, Joao Paulo Gonsiorkiewicz [UNESP] Sofiatti, Valdinei |
author_role |
author |
author2 |
Büll, Leonardo Theodoro [UNESP] Macedo Beltrao, Napoleao Esberard de Rigon, Joao Paulo Gonsiorkiewicz [UNESP] Sofiatti, Valdinei |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Brito Neto, Jose Felix de Büll, Leonardo Theodoro [UNESP] Macedo Beltrao, Napoleao Esberard de Rigon, Joao Paulo Gonsiorkiewicz [UNESP] Sofiatti, Valdinei |
dc.subject.por.fl_str_mv |
Availability plants phosphorus castor bean |
topic |
Availability plants phosphorus castor bean |
description |
Soil that has a high degree of weathering, with more inorganic P bound to Fe and Al oxides, has less P availability to plants. Thus, the critical element of a plant refers to the level below which the growth rate and plant production decreases, demonstrating the need for supplementary fertilization. Accordingly, an experiment was conducted in a greenhouse at Embrapa Algodao with the objective of evaluating the response of castor plants to five doses of P in four types of soil with different adsorption characteristics and critical levels of foliar P. The experimental design was completely randomized in a 4 x 5 factorial design, four types of soil and 5 levels of P with four replications. For TCo, there was an increase in height growth, with dose of 229.6 mg dm(-3) responsible for maximum plant height (74.3 cm). The largest diameter stem (17.58 mm) was observed in CXve with an application of 229.6 mg dm(-3) of P; a decrease was seen when using higher doses. The increase in leaf area was smaller in RY (4724.8 cm(2)), where it was obtained with a dose of 280.2 mg dm(-3). In general, critical levels of P in the plant shoots did not vary much between the soils. The critical level of P in castor bean shoot dry mass was higher (4.61 g kg(-1)) in TCo, this result being directly related to the low clay content of the soil. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-01-01 2015-03-18T15:56:31Z 2015-03-18T15:56:31Z |
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/10.5433/1679-0359.2014v35n1p239 Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 35, n. 1, p. 239-249, 2014. 1676-546X http://hdl.handle.net/11449/117589 10.5433/1679-0359.2014v35n1p239 WOS:000340334000020 WOS000340334000020.pdf |
url |
http://dx.doi.org/10.5433/1679-0359.2014v35n1p239 http://hdl.handle.net/11449/117589 |
identifier_str_mv |
Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 35, n. 1, p. 239-249, 2014. 1676-546X 10.5433/1679-0359.2014v35n1p239 WOS:000340334000020 WOS000340334000020.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Semina-ciencias Agrarias 0.349 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
239-249 application/pdf |
dc.publisher.none.fl_str_mv |
Univ Estadual Londrina |
publisher.none.fl_str_mv |
Univ Estadual Londrina |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808128223529140224 |