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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
13/06/2012 |
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Data da última atualização: |
13/06/2012 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
MARSCHALEK, R.; SCHIOCCHET, M. A.; VIEIRA, J.; BACHA, R. E.; ISHIY, T. |
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Afiliação: |
Epagri |
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Título: |
Rice Breeding in Santa Catarina State, Brazil - The efforts and results from the breeding program of Epagri - Itajaí Experiment Station. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: INTERNATIONAL TEMPERATE RICE CONFERENCE, 4., 2007, Novara (Italy). Proceedings. Novara (Italy): SIRFI, 2007. p. 248-249. |
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ISBN: |
978-88-95616-01-8 |
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Idioma: |
Inglês |
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Conteúdo: |
The establishment of paddy rice as a major crop and its economic feasibility in the small family owned farms in Santa Catarina, is the result of the technologies developed by public research and rural extension efforts. The consequences, in this sense, are the attainment of very high rice yields, which is, in great part, directly attributed to the use of the moderntype varieties developed by Epagri (Santa Catarina State Agricultural Research and Rural Extension Agency). Since 1980, Epagri has released 14 varieties, and this was decisive to improve the paddy rice yield in Santa Catarina, which was 2.3 t/ha in the late 70´s, and reached more than 7.0 t/ha nowadays, although yields of up to 10 t/ha, with these same varieties, are very common among farmers that use the recommended technologies. |
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Palavras-Chave: |
Arroz; Breeding; Melhoramento vegetal; Oryza sativa; Variedade. |
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Categoria do assunto: |
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Marc: |
LEADER 01453naa a2200193 a 4500
001 1075335
005 2012-06-13
008 2007 bl uuuu u00u1 u #d
020 $a978-88-95616-01-8
100 1 $aEpagri
245 $aRice Breeding in Santa Catarina State, Brazil - The efforts and results from the breeding program of Epagri - Itajaí Experiment Station.
260 $c2007
520 $aThe establishment of paddy rice as a major crop and its economic feasibility in the small family owned farms in Santa Catarina, is the result of the technologies developed by public research and rural extension efforts. The consequences, in this sense, are the attainment of very high rice yields, which is, in great part, directly attributed to the use of the moderntype varieties developed by Epagri (Santa Catarina State Agricultural Research and Rural Extension Agency). Since 1980, Epagri has released 14 varieties, and this was decisive to improve the paddy rice yield in Santa Catarina, which was 2.3 t/ha in the late 70´s, and reached more than 7.0 t/ha nowadays, although yields of up to 10 t/ha, with these same varieties, are very common among farmers that use the recommended technologies.
653 $aArroz
653 $aBreeding
653 $aMelhoramento vegetal
653 $aOryza sativa
653 $aVariedade
773 $tIn: INTERNATIONAL TEMPERATE RICE CONFERENCE, 4., 2007, Novara (Italy). Proceedings. Novara (Italy): SIRFI, 2007. p. 248-249.
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Registro original: |
Epagri-Sede (Epagri-Sede) |
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Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
11/09/2018 |
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Data da última atualização: |
11/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
TEIXEIRA, J. B. S.; SOUSA, R. O.; VALE, M. L. C. |
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Título: |
Phosphorus adsorption after drainage in two soil classes. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Revista Ceres, Viçosa, MG, v. 65, n. 2, p. 111-118, 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
Lowland soils, seasonally flooded for rice cultivation, feature alternate oxidation and reduction conditions, which determine intense modifications in the soil mineral solid phase and in the dynamics of highly reactive elements, such as phosphorus. This study aimed to evaluate the effect of drainage of two lowland soils (Albaqualf and Argiaquoll) after a flooding period on the maximum phosphorus adsorption capacity (MPAC). The experiment was conducted in a greenhouse, and the system factor was composed of two levels: 1) flooded soil for 63 days, followed by drainage, and then humidity remained at 16% for 184 days; 2) soil moisture maintained at 16% throughout the trial period. After drainage, soil samples were collected at 0, 36, 96 and, 184 days for MPAC determination, which was performed by the adjustment of adsorption isotherms according to the Langmuir model. The behavior of MPAC after soil drainage was different for both soil classes evaluated. An immediate reduction of maximum phosphorus adsorption capacity was seen after drainage in the case of Albaqualf, while for Argiaquoll, there was a tendency to maintain higher values of MPAC after drainage, with subsequent reduction. Soil drainage after a flooding period increases de maximum phosphorus adsorption capacity, and this effect remains for approximately 163 days in Argiaquoll and 121 days in Albaqualf soils. |
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Palavras-Chave: |
Flooding; Langmuir isotherm; Reduction. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01899naa a2200181 a 4500
001 1127692
005 2018-09-11
008 2018 bl uuuu u00u1 u #d
100 1 $aTEIXEIRA, J. B. S.
245 $aPhosphorus adsorption after drainage in two soil classes.$h[electronic resource]
260 $c2018
520 $aLowland soils, seasonally flooded for rice cultivation, feature alternate oxidation and reduction conditions, which determine intense modifications in the soil mineral solid phase and in the dynamics of highly reactive elements, such as phosphorus. This study aimed to evaluate the effect of drainage of two lowland soils (Albaqualf and Argiaquoll) after a flooding period on the maximum phosphorus adsorption capacity (MPAC). The experiment was conducted in a greenhouse, and the system factor was composed of two levels: 1) flooded soil for 63 days, followed by drainage, and then humidity remained at 16% for 184 days; 2) soil moisture maintained at 16% throughout the trial period. After drainage, soil samples were collected at 0, 36, 96 and, 184 days for MPAC determination, which was performed by the adjustment of adsorption isotherms according to the Langmuir model. The behavior of MPAC after soil drainage was different for both soil classes evaluated. An immediate reduction of maximum phosphorus adsorption capacity was seen after drainage in the case of Albaqualf, while for Argiaquoll, there was a tendency to maintain higher values of MPAC after drainage, with subsequent reduction. Soil drainage after a flooding period increases de maximum phosphorus adsorption capacity, and this effect remains for approximately 163 days in Argiaquoll and 121 days in Albaqualf soils.
653 $aFlooding
653 $aLangmuir isotherm
653 $aReduction
700 1 $aSOUSA, R. O.
700 1 $aVALE, M. L. C.
773 $tRevista Ceres, Viçosa, MG$gv. 65, n. 2, p. 111-118, 2018.
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