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| 43. |  | SFREDO, G. J.; ALMEIDA, A. M. R. Efeito de níveis e modo de aplicação de cloreto de potássio sobre incidência de Phomopsis sojae Leh. em soja. Summa Phytopathologica, Campinas, v. 6, n. 1/2, p. 41, jan./abr. 1980. Resumo apresentado no III Congresso Paulista de Fitpatologia, Jaboticabal, SP, 1980.| Biblioteca(s): Embrapa Soja. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
06/04/2004 |
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Data da última atualização: |
27/07/2007 |
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Autoria: |
SFREDO, G. J.; KLEPKER, D. |
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Título: |
Critical levels of sulfur for soybean in brazilian soils. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004. |
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Páginas: |
p. 118. |
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Série: |
(Embrapa Soja. Documentos, 228). |
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Idioma: |
Inglês |
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Notas: |
Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi. |
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Conteúdo: |
Modern agricultural technologies, intensive use of fertilizers, without S or with low S content, and improper soil management, lower the organic matter content in soil, changing after S availability. In 1998/99, sulfur fertilization research was conducted at several locations in Brazil: in a alic oxisol (latossolo vermelho-escuro álico) at Ponta Grossa, PR, in a eutrofic oxisol (latossolo roxo eutr+ofico) at Londrina, PR, in a dystrofic oxisol (latossolo vermelho-amarelo distrófico) at Sambaíba, MA, and in a dystrofic oxisol (latossolo vermelho-escuro distrófico) Rondonopólis, MT. The objective was to determine the effects of S on soybean yields and to establish critical levels of S in each soil. The experimental design was randomized blocks, with five S levels (0; 25; 50; 75 and 100 kg ha-1) and the sulfur source was elementary sulfur, with 98% S. In the crop year of 2000/01, in Bom Jesus (PI), in latossolo vermelho-amarelo, an experiment was conducted with five levels of S (0; 20; 40; 80; 120 kg ha-1 of S) with three source of sulfur: Simple Superphosphate; Elementary sulfur and Gypsum. From the results, the critical level of S in each soil were determined extract with Ca(H2PO4)2 0,01 M/L and determined using Turbidimetric methods, was: in Londrina and Ponta Grossa the limits were: low <5 mg dm-3; medium 5-10 mg dm-3 and high > 10 mg dm-3 for soil depth at 0-20 cm; and low <20 mg dm-3; medium 20-35 mg dm-3; and high > 35 mg dm-3 for soil depth at 20 to 40 cm. In Sambaíba, Bom Jesus and Rondonópolis soils, the critical levels were: low <2 mg dm-3; medium 2-3 mg dm-3; and high> 3 mg dm-3 for depth at 0-20 cm and low <6 mg dm-3; medium 6-9 mg dm-3; and high > 9 mg dm-3 for depth at 20-40 cm. MenosModern agricultural technologies, intensive use of fertilizers, without S or with low S content, and improper soil management, lower the organic matter content in soil, changing after S availability. In 1998/99, sulfur fertilization research was conducted at several locations in Brazil: in a alic oxisol (latossolo vermelho-escuro álico) at Ponta Grossa, PR, in a eutrofic oxisol (latossolo roxo eutr+ofico) at Londrina, PR, in a dystrofic oxisol (latossolo vermelho-amarelo distrófico) at Sambaíba, MA, and in a dystrofic oxisol (latossolo vermelho-escuro distrófico) Rondonopólis, MT. The objective was to determine the effects of S on soybean yields and to establish critical levels of S in each soil. The experimental design was randomized blocks, with five S levels (0; 25; 50; 75 and 100 kg ha-1) and the sulfur source was elementary sulfur, with 98% S. In the crop year of 2000/01, in Bom Jesus (PI), in latossolo vermelho-amarelo, an experiment was conducted with five levels of S (0; 20; 40; 80; 120 kg ha-1 of S) with three source of sulfur: Simple Superphosphate; Elementary sulfur and Gypsum. From the results, the critical level of S in each soil were determined extract with Ca(H2PO4)2 0,01 M/L and determined using Turbidimetric methods, was: in Londrina and Ponta Grossa the limits were: low <5 mg dm-3; medium 5-10 mg dm-3 and high > 10 mg dm-3 for soil depth at 0-20 cm; and low <20 mg dm-3; medium 20-35 mg dm-3; and high > 35 mg dm-3 for soil depth at 20 to 40 cm. In Sambaíba, ... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02557naa a2200169 a 4500
001 1466775
005 2007-07-27
008 2004 bl uuuu u00u1 u #d
100 1 $aSFREDO, G. J.
245 $aCritical levels of sulfur for soybean in brazilian soils.
260 $c2004
300 $ap. 118.
490 $a(Embrapa Soja. Documentos, 228).
500 $aEditado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi.
520 $aModern agricultural technologies, intensive use of fertilizers, without S or with low S content, and improper soil management, lower the organic matter content in soil, changing after S availability. In 1998/99, sulfur fertilization research was conducted at several locations in Brazil: in a alic oxisol (latossolo vermelho-escuro álico) at Ponta Grossa, PR, in a eutrofic oxisol (latossolo roxo eutr+ofico) at Londrina, PR, in a dystrofic oxisol (latossolo vermelho-amarelo distrófico) at Sambaíba, MA, and in a dystrofic oxisol (latossolo vermelho-escuro distrófico) Rondonopólis, MT. The objective was to determine the effects of S on soybean yields and to establish critical levels of S in each soil. The experimental design was randomized blocks, with five S levels (0; 25; 50; 75 and 100 kg ha-1) and the sulfur source was elementary sulfur, with 98% S. In the crop year of 2000/01, in Bom Jesus (PI), in latossolo vermelho-amarelo, an experiment was conducted with five levels of S (0; 20; 40; 80; 120 kg ha-1 of S) with three source of sulfur: Simple Superphosphate; Elementary sulfur and Gypsum. From the results, the critical level of S in each soil were determined extract with Ca(H2PO4)2 0,01 M/L and determined using Turbidimetric methods, was: in Londrina and Ponta Grossa the limits were: low <5 mg dm-3; medium 5-10 mg dm-3 and high > 10 mg dm-3 for soil depth at 0-20 cm; and low <20 mg dm-3; medium 20-35 mg dm-3; and high > 35 mg dm-3 for soil depth at 20 to 40 cm. In Sambaíba, Bom Jesus and Rondonópolis soils, the critical levels were: low <2 mg dm-3; medium 2-3 mg dm-3; and high> 3 mg dm-3 for depth at 0-20 cm and low <6 mg dm-3; medium 6-9 mg dm-3; and high > 9 mg dm-3 for depth at 20-40 cm.
700 1 $aKLEPKER, D.
773 $tIn: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004.
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