Detalhes bibliográficos
| Ano de defesa: |
1994 |
| Autor(a) principal: |
Lima, Berthyer Peixoto |
| Orientador(a): |
Não Informado pela instituição |
| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Não Informado pela instituição
|
| Programa de Pós-Graduação: |
Não Informado pela instituição
|
| Departamento: |
Não Informado pela instituição
|
| País: |
Não Informado pela instituição
|
| Palavras-chave em Português: |
|
| Link de acesso: |
http://www.repositorio.ufc.br/handle/riufc/48739
|
Resumo: |
To characterlze areas of the irrigated part of the "Fazenda Experimental da Universidade Federal do Ceará" at the Curu River Valley, Ceará, Brazil, a set of soil determinations and analysis were made at the fields coded AT1, BT1, AT2, AA1, BA1, AT3 and BT3. Infiltration tests, wlth cilinder, infiltrometer, were made for alI fields, and the results plotted according to KOSTIAKOV'S equation. To characterize physically and morphologically the soils of the areas, four trenches were dug. Soil densities and hydraulic conductivities were also determined. Results of the analysis and determinations show a significant difference in water holding capacity between soil profile and among horizons within the same profile, due to differences in clay, silt, sand, organic matter and kinds of soil aggregates. Soil density increased with depth and with time, showing a tendency for compaction of the soil, probably due to the improper use of farm machinery within the areas. Soil compactness also explains the low hydraulic conductivity values encountered. This should also explain the low infiltration values found at the field tests. |
