Evaluation of methods of chemical analysis for available phosphorus in soils of the "Zona Litoral-Mata" of Pernambuco
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
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/17247 |
Resumo: | A greenhouse study was conducted with corn for the purpose of comparing the abilities of five chemical tests to estimate supplies of plant available phosphate in soils of the physiographic region of Pernambuco known as the "Zona Litoral-Mata". Each soil in the study is typical of one of eleven mapping units used in the reconaissance soil survey of the region. The eleven soils represent a wide range of physico-chemical properties. The phosphorus tests examined included the following: 0.05 N HCl + 0.025 N H2SO4 (Mehlich method); 0.03 N NH4F in 0.025 N HCl (Bray method n.° 1); 0.03 NH4F in 0.1 N HCl (Bray method n.° 2); 0.5 M NaHCO3 (Olsen method); and 0.5 N HCl (Hawaii method). The five tests are compared on the basis of simple correlation between the amounts of phosphorus extracted from the eleven soils and relative dry matter production as measured in the greenhouse. Relative dry matter production was computed as 100 times the ratio of weight dry matter produced when no P was applied to the weight of dry matter when P was applied. Correlations of the results of five phosphate tests with relative dry matter production were as follows: Mehlich, r = 0.520; Bray n.° 1, r = 0.540; Bray n.° 2, r = 0.398; Olsen, r = 0.170; and Hawaii, r = 0.649. Only the later correlation was significant at the 95% probability level, therefore indicating that there is some advantage to using the Hawaii test to measure available phosphorus in the soils studied. Phosphorus appeared to be strongly deficient in all eleven soils. Relative dry matter production ranged from 22.8 to 71.2. In all instances the response of corn to applied phosphate was significant at the 99% probability level. |
id |
EMBRAPA-4_9f8d82c1b6212bdc0732a2003a0a80ba |
---|---|
oai_identifier_str |
oai:ojs.seer.sct.embrapa.br:article/17247 |
network_acronym_str |
EMBRAPA-4 |
network_name_str |
Pesquisa Agropecuária Brasileira (Online) |
repository_id_str |
|
spelling |
Evaluation of methods of chemical analysis for available phosphorus in soils of the "Zona Litoral-Mata" of PernambucoAvaliação de métodos de análise química para fósforo disponível em solos da "Zona Litoral-Mata" de PernambucoPhosphorus supply; soil tests; soil-plant relationship; ecological implicationsSuprimento de fósforo; testes de solo; afinidade solo-planta; implicações ecológicasA greenhouse study was conducted with corn for the purpose of comparing the abilities of five chemical tests to estimate supplies of plant available phosphate in soils of the physiographic region of Pernambuco known as the "Zona Litoral-Mata". Each soil in the study is typical of one of eleven mapping units used in the reconaissance soil survey of the region. The eleven soils represent a wide range of physico-chemical properties. The phosphorus tests examined included the following: 0.05 N HCl + 0.025 N H2SO4 (Mehlich method); 0.03 N NH4F in 0.025 N HCl (Bray method n.° 1); 0.03 NH4F in 0.1 N HCl (Bray method n.° 2); 0.5 M NaHCO3 (Olsen method); and 0.5 N HCl (Hawaii method). The five tests are compared on the basis of simple correlation between the amounts of phosphorus extracted from the eleven soils and relative dry matter production as measured in the greenhouse. Relative dry matter production was computed as 100 times the ratio of weight dry matter produced when no P was applied to the weight of dry matter when P was applied. Correlations of the results of five phosphate tests with relative dry matter production were as follows: Mehlich, r = 0.520; Bray n.° 1, r = 0.540; Bray n.° 2, r = 0.398; Olsen, r = 0.170; and Hawaii, r = 0.649. Only the later correlation was significant at the 95% probability level, therefore indicating that there is some advantage to using the Hawaii test to measure available phosphorus in the soils studied. Phosphorus appeared to be strongly deficient in all eleven soils. Relative dry matter production ranged from 22.8 to 71.2. In all instances the response of corn to applied phosphate was significant at the 99% probability level.É relatado um estudo comparativo entre cinco soluções extratoras adaptadas à rotina dos laboratórios de assistência aos agricultores do Programa Nacional de Fertilidade para a determinação de fósforo disponível em solos pertencentes à área fisiográfica demarcada pela "Zona Litoral-Mata" de Pernambuco. As amostras analisadas pertencem à camada superficial (horizonte A) de 11 unidades de mapeamento do Levantamento de Reconhecimento dos Solos da Zona da Mata de Pernambuco, realizado pela Divisão de Pedologia e Fertilidade do Solo e pelo Instituto de Pesquisas Agropecuárias do Nordeste (IPEANE). As soluções extratoras utilizadas específicas dos cinco métodos analíticos foram: 0,05N HCl + 0,025N H2SO4: método de Mehlich; 0,03N NH4F em 0,025 HCl: método de Bray n.° 1; 0,03N NH4F em 0,1 HCl: método de Bray n.° 2; 0,5M NaHCO3: método de Olsen e 0,5N HCl: método de Hawaii. No estabelecimento das associações de utilização do fósforo pela planta indicadora (milho) em casa de vegetação e da disponibilidade de fósforo, utilizando-se os diferentes extratores, a análise estatística evidenciou correlação positiva, significativa ao nível de 5%, para solução extratora do método de Hawaii e, por conseguinte, a vantagem da utilização desta para a determinação do fósforo disponível nos solos estudados, sobre a dos demais métodos. A pesquisa estabeleceu os seguintes coeficientes de correlação entre os diversos extratores de fósforo e sua utilização pela planta no tratamento sem fertilização fosfatada: Mehlich: r = 0,520; Bray n.° 1: r = 0,540; Bray n.° 2: r = 0,398; Olsen: r = 0,170 e Hawaii: r = 0,649. Pelos resultados encontrados, constataram-se produções muito limitadas de matéria seca nos tratamentos sem aplicação de fertilizantes fosfatados e a análise estatística feita no conjunto dos experimentes evidenciou uma resposta altamente significativa do milho à adução fosfatada, ao nível de 0,1%, indicando que os solos estudados são deficientes desse nutriente.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSá Júnior, J. P. Meira eAraújo, Severino M. C. deGalvão, Stênio JaymeVasconcelos, Armando L. deOliveira, Edson S. C. de2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/17247Pesquisa Agropecuaria Brasileira; v.9, n.9, 1974: Série Agronomia; 27-33Pesquisa Agropecuária Brasileira; v.9, n.9, 1974: Série Agronomia; 27-331678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/17247/11550info:eu-repo/semantics/openAccess2014-04-15T18:57:09Zoai:ojs.seer.sct.embrapa.br:article/17247Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T18:57:09Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Evaluation of methods of chemical analysis for available phosphorus in soils of the "Zona Litoral-Mata" of Pernambuco Avaliação de métodos de análise química para fósforo disponível em solos da "Zona Litoral-Mata" de Pernambuco |
title |
Evaluation of methods of chemical analysis for available phosphorus in soils of the "Zona Litoral-Mata" of Pernambuco |
spellingShingle |
Evaluation of methods of chemical analysis for available phosphorus in soils of the "Zona Litoral-Mata" of Pernambuco Sá Júnior, J. P. Meira e Phosphorus supply; soil tests; soil-plant relationship; ecological implications Suprimento de fósforo; testes de solo; afinidade solo-planta; implicações ecológicas |
title_short |
Evaluation of methods of chemical analysis for available phosphorus in soils of the "Zona Litoral-Mata" of Pernambuco |
title_full |
Evaluation of methods of chemical analysis for available phosphorus in soils of the "Zona Litoral-Mata" of Pernambuco |
title_fullStr |
Evaluation of methods of chemical analysis for available phosphorus in soils of the "Zona Litoral-Mata" of Pernambuco |
title_full_unstemmed |
Evaluation of methods of chemical analysis for available phosphorus in soils of the "Zona Litoral-Mata" of Pernambuco |
title_sort |
Evaluation of methods of chemical analysis for available phosphorus in soils of the "Zona Litoral-Mata" of Pernambuco |
author |
Sá Júnior, J. P. Meira e |
author_facet |
Sá Júnior, J. P. Meira e Araújo, Severino M. C. de Galvão, Stênio Jayme Vasconcelos, Armando L. de Oliveira, Edson S. C. de |
author_role |
author |
author2 |
Araújo, Severino M. C. de Galvão, Stênio Jayme Vasconcelos, Armando L. de Oliveira, Edson S. C. de |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Sá Júnior, J. P. Meira e Araújo, Severino M. C. de Galvão, Stênio Jayme Vasconcelos, Armando L. de Oliveira, Edson S. C. de |
dc.subject.por.fl_str_mv |
Phosphorus supply; soil tests; soil-plant relationship; ecological implications Suprimento de fósforo; testes de solo; afinidade solo-planta; implicações ecológicas |
topic |
Phosphorus supply; soil tests; soil-plant relationship; ecological implications Suprimento de fósforo; testes de solo; afinidade solo-planta; implicações ecológicas |
description |
A greenhouse study was conducted with corn for the purpose of comparing the abilities of five chemical tests to estimate supplies of plant available phosphate in soils of the physiographic region of Pernambuco known as the "Zona Litoral-Mata". Each soil in the study is typical of one of eleven mapping units used in the reconaissance soil survey of the region. The eleven soils represent a wide range of physico-chemical properties. The phosphorus tests examined included the following: 0.05 N HCl + 0.025 N H2SO4 (Mehlich method); 0.03 N NH4F in 0.025 N HCl (Bray method n.° 1); 0.03 NH4F in 0.1 N HCl (Bray method n.° 2); 0.5 M NaHCO3 (Olsen method); and 0.5 N HCl (Hawaii method). The five tests are compared on the basis of simple correlation between the amounts of phosphorus extracted from the eleven soils and relative dry matter production as measured in the greenhouse. Relative dry matter production was computed as 100 times the ratio of weight dry matter produced when no P was applied to the weight of dry matter when P was applied. Correlations of the results of five phosphate tests with relative dry matter production were as follows: Mehlich, r = 0.520; Bray n.° 1, r = 0.540; Bray n.° 2, r = 0.398; Olsen, r = 0.170; and Hawaii, r = 0.649. Only the later correlation was significant at the 95% probability level, therefore indicating that there is some advantage to using the Hawaii test to measure available phosphorus in the soils studied. Phosphorus appeared to be strongly deficient in all eleven soils. Relative dry matter production ranged from 22.8 to 71.2. In all instances the response of corn to applied phosphate was significant at the 99% probability level. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-15 |
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/17247 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/17247 |
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/17247/11550 |
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.9, n.9, 1974: Série Agronomia; 27-33 Pesquisa Agropecuária Brasileira; v.9, n.9, 1974: Série Agronomia; 27-33 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 |
_version_ |
1793416698212122624 |