Response of rice cultivars to phosphorus supply on an oxisol.
Autor(a) principal: | |
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Data de Publicação: | 1988 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/197735 https://doi.org/10.1007/BF01051370 |
Resumo: | Genotypic differences in absorption or utilization of P might be exploited to improve efficiency of fertilizer use or to obtain higher productivity on P-deficient soils. The objective of this study was to evaluate responses by 75 genotypes of upland rice (Oryza sativa L.) to two soil P levels in two field experiments. In the first experiment, soil P levels (Mehlich 1) were 1.5 mg kg-1 and 5 mg kg-1, and in the second experiment, 3 mg kg-1 and 4.7 mg kg-1 of soil, respectively. Rice cultivars differed significantly in shoot dry matter production at flowering, grain yield, and plant P status. Based on a grain yield efficiency index, cultivars were classified as P-efficient or P-inefficient. Shoot dry matter was more sensitive to P-deficiency but was not related to grain yield. Phosphorus use efficiency was higher under the low P treatment. Phosphorus uptake was significantly correlated with dry matter, P concentration and P-efficiency ratio. Results of this study indicate that genetic differences in P-use efficiency exist among upland rice cultivars and may be exploited in breeding programs. |
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Response of rice cultivars to phosphorus supply on an oxisol.FertilizacaoGenotypic differencesArrozCerradoFósforoOryza SativaOxisolSoloRicePhosphorusOxisolsGenotypic differences in absorption or utilization of P might be exploited to improve efficiency of fertilizer use or to obtain higher productivity on P-deficient soils. The objective of this study was to evaluate responses by 75 genotypes of upland rice (Oryza sativa L.) to two soil P levels in two field experiments. In the first experiment, soil P levels (Mehlich 1) were 1.5 mg kg-1 and 5 mg kg-1, and in the second experiment, 3 mg kg-1 and 4.7 mg kg-1 of soil, respectively. Rice cultivars differed significantly in shoot dry matter production at flowering, grain yield, and plant P status. Based on a grain yield efficiency index, cultivars were classified as P-efficient or P-inefficient. Shoot dry matter was more sensitive to P-deficiency but was not related to grain yield. Phosphorus use efficiency was higher under the low P treatment. Phosphorus uptake was significantly correlated with dry matter, P concentration and P-efficiency ratio. Results of this study indicate that genetic differences in P-use efficiency exist among upland rice cultivars and may be exploited in breeding programs.NAND KUMAR FAGERIA, CNPAF; ORLANDO PEIXOTO DE MORAIS, CNPAF.FAGERIA, N. K.MORAIS, O. P.BALIGAR, V. C.WRIGHT, R. J.2021-10-05T12:00:33Z2021-10-05T12:00:33Z1994-10-251988info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleFertilizer Research, v. 16, n. 3, p. 195-206, July 1988.http://www.alice.cnptia.embrapa.br/alice/handle/doc/197735https://doi.org/10.1007/BF01051370enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2021-10-05T12:00:48Zoai:www.alice.cnptia.embrapa.br:doc/197735Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542021-10-05T12:00:48falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542021-10-05T12:00:48Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Response of rice cultivars to phosphorus supply on an oxisol. |
title |
Response of rice cultivars to phosphorus supply on an oxisol. |
spellingShingle |
Response of rice cultivars to phosphorus supply on an oxisol. FAGERIA, N. K. Fertilizacao Genotypic differences Arroz Cerrado Fósforo Oryza Sativa Oxisol Solo Rice Phosphorus Oxisols |
title_short |
Response of rice cultivars to phosphorus supply on an oxisol. |
title_full |
Response of rice cultivars to phosphorus supply on an oxisol. |
title_fullStr |
Response of rice cultivars to phosphorus supply on an oxisol. |
title_full_unstemmed |
Response of rice cultivars to phosphorus supply on an oxisol. |
title_sort |
Response of rice cultivars to phosphorus supply on an oxisol. |
author |
FAGERIA, N. K. |
author_facet |
FAGERIA, N. K. MORAIS, O. P. BALIGAR, V. C. WRIGHT, R. J. |
author_role |
author |
author2 |
MORAIS, O. P. BALIGAR, V. C. WRIGHT, R. J. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
NAND KUMAR FAGERIA, CNPAF; ORLANDO PEIXOTO DE MORAIS, CNPAF. |
dc.contributor.author.fl_str_mv |
FAGERIA, N. K. MORAIS, O. P. BALIGAR, V. C. WRIGHT, R. J. |
dc.subject.por.fl_str_mv |
Fertilizacao Genotypic differences Arroz Cerrado Fósforo Oryza Sativa Oxisol Solo Rice Phosphorus Oxisols |
topic |
Fertilizacao Genotypic differences Arroz Cerrado Fósforo Oryza Sativa Oxisol Solo Rice Phosphorus Oxisols |
description |
Genotypic differences in absorption or utilization of P might be exploited to improve efficiency of fertilizer use or to obtain higher productivity on P-deficient soils. The objective of this study was to evaluate responses by 75 genotypes of upland rice (Oryza sativa L.) to two soil P levels in two field experiments. In the first experiment, soil P levels (Mehlich 1) were 1.5 mg kg-1 and 5 mg kg-1, and in the second experiment, 3 mg kg-1 and 4.7 mg kg-1 of soil, respectively. Rice cultivars differed significantly in shoot dry matter production at flowering, grain yield, and plant P status. Based on a grain yield efficiency index, cultivars were classified as P-efficient or P-inefficient. Shoot dry matter was more sensitive to P-deficiency but was not related to grain yield. Phosphorus use efficiency was higher under the low P treatment. Phosphorus uptake was significantly correlated with dry matter, P concentration and P-efficiency ratio. Results of this study indicate that genetic differences in P-use efficiency exist among upland rice cultivars and may be exploited in breeding programs. |
publishDate |
1988 |
dc.date.none.fl_str_mv |
1988 1994-10-25 2021-10-05T12:00:33Z 2021-10-05T12:00:33Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Fertilizer Research, v. 16, n. 3, p. 195-206, July 1988. http://www.alice.cnptia.embrapa.br/alice/handle/doc/197735 https://doi.org/10.1007/BF01051370 |
identifier_str_mv |
Fertilizer Research, v. 16, n. 3, p. 195-206, July 1988. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/197735 https://doi.org/10.1007/BF01051370 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503510335684608 |