AGRONOMIC EFFICIENCY OF ROCK PHOSPHATES ON MILLET YIELD IN SAVANNAH SOILS

Detalhes bibliográficos
Autor(a) principal: Santos, Elihu de Almeida
Data de Publicação: 2007
Outros Autores: Kliemann, Huberto José
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Tropical (Online)
Texto Completo: https://revistas.ufg.br/pat/article/view/2129
Resumo: A greenhouse experiment was undertaken to assess the agronomic efficiency of rock phosphates in five savannah soils. Standard response curves (0 kg ha-1, 100 kg ha-1, 200 kg ha-1, 400 kg ha-1, and 800 kg ha-1 of P2O5) with triple superphosphate (TSP) were used, including two rates (200 kg ha-1 and 800 kg ha-1 of P2O5) of alternative phosphate sources (Arad phosphorite - Israel, phosphoric bauxite - Senegal, and Araxá apatite - Brazil). Millet (Pennisetum thyphoides) was used as test crop. Data show the following ranking for agronomic efficiency: phosphorite > bauxitic phosphate > apatitic phosphate. Mehlich-1 extractant solubilizes apatitic phosphates, over-estimating the available phosphorus (P) in soils. Critical levels for Mehlich-1 and resin extractants, to which data of available phosphorus from natural phosphate treatments have been added, differed among each other, but were higher than those obtained with triple superphosphate alone. The extractants behaved in a similar way as related to the extraction of soil available P. KEY-WORDS: Rock phosphates; performance; savannah; millet.
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spelling AGRONOMIC EFFICIENCY OF ROCK PHOSPHATES ON MILLET YIELD IN SAVANNAH SOILSEFICIÊNCIA DE FOSFATOS NATURAIS RELACIONADA À PRODUTIVIDADE DE MILHETO EM SOLOS DE CERRADORock phosphatesperformancesavannahmilletFosfatos naturaisdesempenhocerradomilheto A greenhouse experiment was undertaken to assess the agronomic efficiency of rock phosphates in five savannah soils. Standard response curves (0 kg ha-1, 100 kg ha-1, 200 kg ha-1, 400 kg ha-1, and 800 kg ha-1 of P2O5) with triple superphosphate (TSP) were used, including two rates (200 kg ha-1 and 800 kg ha-1 of P2O5) of alternative phosphate sources (Arad phosphorite - Israel, phosphoric bauxite - Senegal, and Araxá apatite - Brazil). Millet (Pennisetum thyphoides) was used as test crop. Data show the following ranking for agronomic efficiency: phosphorite > bauxitic phosphate > apatitic phosphate. Mehlich-1 extractant solubilizes apatitic phosphates, over-estimating the available phosphorus (P) in soils. Critical levels for Mehlich-1 and resin extractants, to which data of available phosphorus from natural phosphate treatments have been added, differed among each other, but were higher than those obtained with triple superphosphate alone. The extractants behaved in a similar way as related to the extraction of soil available P. KEY-WORDS: Rock phosphates; performance; savannah; millet. Um experimento em estufa foi realizado para avaliar a eficiência agronômica de três fosfatos naturais, em cinco solos da região dos cerrados. Construíram-se curvas de resposta padrão (0 kg ha-1, 100 kg ha-1, 200 kg ha-1, 400 kg ha-1 e 800 kg ha-1 de P2O5) com superfosfato triplo (ST), incluindo duas doses (200 kg ha-1 e 800 kg ha-1 de P2O5) das fontes de fosfatos alternativos (fosforita de Arad - Israel, fosfato de alumínio e cálcio - Senegal, e apatita de Araxá - Brazil). Usou-se o milheto (Pennisetum thyphoides) como planta-teste. A ordem de eficiência dos fosfatos naturais aplicados aos solos utilizados neste estudo fo a seguintei: fosforita > fosfato de alumínio e cálcio > apatita. O extrator Mehlich-1 solubilizou os fosfatos apatíticos, super-estimando o fósforo (P) disponível nos solos. Os níveis críticos para os extratores Mehlich-1 e resina, aos quais foram adicionados dados do fósforo (P) disponível nos tratamentos com fosfatos naturais, diferiram entre si, mas, foram mais altos do que os obtidos com o superfosfato triplo isoladamente. Os dois extratores comportaram-se de modo similar, com respeito à extração de P disponível no solo. PALAVRAS-CHAVE: Fosfatos naturais; desempenho; cerrado; milheto.Escola de Agronomia - Universidade Federal de Goiás2007-10-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresPesquisa experimentalapplication/pdfhttps://revistas.ufg.br/pat/article/view/2129Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 36, n. 2, May/Aug. 2006; 75-81Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 36, n. 2, mai./ago. 2006; 75-81Pesquisa Agropecuária Tropical; v. 36, n. 2, mai./ago. 2006; 75-811983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/pat/article/view/2129/2099Santos, Elihu de AlmeidaKliemann, Huberto Joséinfo:eu-repo/semantics/openAccess2020-02-27T00:00:12Zoai:ojs.revistas.ufg.br:article/2129Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:54:55.772725Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv AGRONOMIC EFFICIENCY OF ROCK PHOSPHATES ON MILLET YIELD IN SAVANNAH SOILS
EFICIÊNCIA DE FOSFATOS NATURAIS RELACIONADA À PRODUTIVIDADE DE MILHETO EM SOLOS DE CERRADO
title AGRONOMIC EFFICIENCY OF ROCK PHOSPHATES ON MILLET YIELD IN SAVANNAH SOILS
spellingShingle AGRONOMIC EFFICIENCY OF ROCK PHOSPHATES ON MILLET YIELD IN SAVANNAH SOILS
Santos, Elihu de Almeida
Rock phosphates
performance
savannah
millet
Fosfatos naturais
desempenho
cerrado
milheto
title_short AGRONOMIC EFFICIENCY OF ROCK PHOSPHATES ON MILLET YIELD IN SAVANNAH SOILS
title_full AGRONOMIC EFFICIENCY OF ROCK PHOSPHATES ON MILLET YIELD IN SAVANNAH SOILS
title_fullStr AGRONOMIC EFFICIENCY OF ROCK PHOSPHATES ON MILLET YIELD IN SAVANNAH SOILS
title_full_unstemmed AGRONOMIC EFFICIENCY OF ROCK PHOSPHATES ON MILLET YIELD IN SAVANNAH SOILS
title_sort AGRONOMIC EFFICIENCY OF ROCK PHOSPHATES ON MILLET YIELD IN SAVANNAH SOILS
author Santos, Elihu de Almeida
author_facet Santos, Elihu de Almeida
Kliemann, Huberto José
author_role author
author2 Kliemann, Huberto José
author2_role author
dc.contributor.author.fl_str_mv Santos, Elihu de Almeida
Kliemann, Huberto José
dc.subject.por.fl_str_mv Rock phosphates
performance
savannah
millet
Fosfatos naturais
desempenho
cerrado
milheto
topic Rock phosphates
performance
savannah
millet
Fosfatos naturais
desempenho
cerrado
milheto
description A greenhouse experiment was undertaken to assess the agronomic efficiency of rock phosphates in five savannah soils. Standard response curves (0 kg ha-1, 100 kg ha-1, 200 kg ha-1, 400 kg ha-1, and 800 kg ha-1 of P2O5) with triple superphosphate (TSP) were used, including two rates (200 kg ha-1 and 800 kg ha-1 of P2O5) of alternative phosphate sources (Arad phosphorite - Israel, phosphoric bauxite - Senegal, and Araxá apatite - Brazil). Millet (Pennisetum thyphoides) was used as test crop. Data show the following ranking for agronomic efficiency: phosphorite > bauxitic phosphate > apatitic phosphate. Mehlich-1 extractant solubilizes apatitic phosphates, over-estimating the available phosphorus (P) in soils. Critical levels for Mehlich-1 and resin extractants, to which data of available phosphorus from natural phosphate treatments have been added, differed among each other, but were higher than those obtained with triple superphosphate alone. The extractants behaved in a similar way as related to the extraction of soil available P. KEY-WORDS: Rock phosphates; performance; savannah; millet.
publishDate 2007
dc.date.none.fl_str_mv 2007-10-26
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Avaliado por pares
Pesquisa experimental
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufg.br/pat/article/view/2129
url https://revistas.ufg.br/pat/article/view/2129
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://revistas.ufg.br/pat/article/view/2129/2099
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 Escola de Agronomia - Universidade Federal de Goiás
publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
dc.source.none.fl_str_mv Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 36, n. 2, May/Aug. 2006; 75-81
Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 36, n. 2, mai./ago. 2006; 75-81
Pesquisa Agropecuária Tropical; v. 36, n. 2, mai./ago. 2006; 75-81
1983-4063
reponame:Pesquisa Agropecuária Tropical (Online)
instname:Universidade Federal de Goiás (UFG)
instacron:UFG
instname_str Universidade Federal de Goiás (UFG)
instacron_str UFG
institution UFG
reponame_str Pesquisa Agropecuária Tropical (Online)
collection Pesquisa Agropecuária Tropical (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)
repository.mail.fl_str_mv aseleguini.pat@gmail.com||mgoes@agro.ufg.br
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