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| Ferreira,Eric Victor de Oliveira; Anghinoni,Ibanor; Carvalho,Paulo César de Faccio; Costa,Sergio Ely Valadão Gigante de Andrade; Cao,Eduardo Giacomelli. |
| A dinâmica de K em sistemas de integração lavoura-pecuária (ILP) diverge daquelas de outros sistemas de manejo, porque os sistemas ILP são mais complexos e envolvem, além das práticas relacionadas à cultura de interesse econômico, a introdução do animal. Objetivou-se, neste trabalho, avaliar as concentrações do K do solo em um sistema ILP, em plantio direto, com diferentes intensidades de pastejo (aveia-preta + azevém) de bovinos no inverno e a cultura da soja cultivada no verão. O experimento foi iniciado em maio de 2001 em área pertencente à Fazenda do Espinilho, localizada no município de São Miguel das Missões - RS, em Latossolo Vermelho distroférrico que vinha sendo cultivado em plantio direto desde 1991. Os tratamentos constaram de intensidades de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Distribuição de potássio; Aveia-preta + azevém; Soja. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000600016 |
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| Carmona,Felipe de Campos; Anghinoni,Ibanor; Cao,Eduardo Giacomelli. |
| Rice in Rio Grande do Sul State is grown mostly under flooding, which induces a series of chemical, physical and biological changes in the root environment. These changes, combined with the presence of rice plants, affect the availability of exchangeable ammonium (NH4+) and pH of soil solution, whereas the dynamics of both variables can be influenced by soil salinity, a common problem in the coastal region. This study was conducted to evaluate the dynamics of exchangeable NH4+ and pH in the soil solution, and their relation in the solution of Albaqualf soils with different salinity levels, under rice. Four field experiments were conducted with soils with exchangeable Na percentage (ESP) of 5.6, 9.0, 21.2, and 32.7 %. Prior to flooding, soil solution... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitrogen; Acidity; Exchangeable sodium percentage. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000200009 |
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| Costa,Sérgio Ely Valadão Gigante de Andrade; Souza,Edicarlos Damaceno de; Anghinoni,Ibanor; Flores,João Paulo Cassol; Cao,Eduardo Giacomelli; Holzschuh,Marquel Jonas. |
| Soil and fertilizer management during cultivation can affect crop productivity and profitability. Long-term experiments are therefore necessary to determine the dynamics of nutrient and root distribution as related to soil profile, as well as the effects on nutrient uptake and crop growth. An 18-year experiment was conducted at the Federal University of Rio Grande do Sul State (UFRGS), in Eldorado do Sul, Brazil, on Rhodic Paleudult soil. Black oat and vetch were planted in the winter and corn in the summer. The soil management methods were conventional, involving no-tillage and strip tillage techniques and broadcast, row-and strip-applied fertilizer placement (triple superphosphate). Available P (Mehlich-1) and root distribution were determined in soil... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil tillage; P fertilization; Utilization efficiency. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000500017 |
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