Detalhes bibliográficos
| Ano de defesa: |
2008 |
| Autor(a) principal: |
SANTOS, Francisco Xavier dos
 |
| Orientador(a): |
MONTENEGRO, Abelardo Antônio de Assunção |
| Banca de defesa: |
SILVA, Ênio Farias de França e,
AZEVEDO, Carlos Alberto Vieira de |
| Tipo de documento: |
Tese
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal Rural de Pernambuco
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Ciência do Solo
|
| Departamento: |
Departamento de Agronomia
|
| País: |
Brasil
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5165
|
Resumo: |
The evaluation of water requirement and of the crop coefficient is very important for an adequate irrigation management. However, there is a lack of information about carrot crop under northeast edaphic-climatic semi arid conditions, especially about crop carrot. The objective of this work was to evaluate the carrot crop evapotranspiration and crop coefficient (Kc) in alluvial area of semi arid of Pernambuco State, Brazil, where the communal agriculture is developed. Three drainage lysimeters were used, cropped with carrot, being the crop evapotranspiration (ETc) contability determined by mass balance in 5 days scale and the reference evapotranspiration (ETo) was estimated by Class A Pan methodology. The cumulative ETo during the experimental period was 615.02 mm, while the ETc was 811.84 mm. The coefficients band obtained, considering Kp values of 0.81 and 0.75 to the different growth stages were: 1.08-1.16; 1.41-1.52; 143-1.55 and 1.40-1.52, respectively, for the phases : beginning (20 days after plantation - DAP), growth (50 DAP), middle (80 DAP) and final (98 DAP), being the mean Kc of 1.35 and 1.46 for whole period. These values were higher than these presented by FAO and highlight the necessity of investigation of crop coefficient under local conditions. |
