| Registro completo |
| Provedor de dados: |
Anais da ABC (AABC)
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| País: |
Brazil
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| Título: |
A new concept for insect damage evaluation based on plant physiological variables
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| Autores: |
Neves,Ademir D.
Oliveira,Ricardo F.
Parra,José R.P.
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| Data: |
2006-12-01
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| Ano: |
2006
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| Palavras-chave: |
Photosynthesis
Economic level injury
Citrus
Coffee
Plant-insect interactions
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| Resumo: |
The objective of this study was to determine the damage levels caused by Orthezia praelonga Douglas, 1891 and Leucoptera coffeella (Guérin-Mèneville 1842), on rangpur lime and Obatã coffee leaves, respectively. Measurements were based on a new concept for the evaluation of the following plant physiological parameters: photosynthesis, stomatal conductance, leaf temperature and transpiration, and internal concentration of CO2 (by infrared analyzer). A negative correlation between infestation level and photosynthesis was found, where the negative inflexion point of the curve was considered as a reference for damage levels. The control level for O. praelonga is below the 7-13% limit for damaged leaf area (40 to 70 scales per leaf), while for L. coffeella it is below the 26-36% limit for the same variable. Photosynthesis provided the best correlation for this type of analysis.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000400015
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| Editor: |
Academia Brasileira de Ciências
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| Relação: |
10.1590/S0001-37652006000400015
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| Formato: |
text/html
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| Fonte: |
Anais da Academia Brasileira de Ciências v.78 n.4 2006
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| Direitos: |
info:eu-repo/semantics/openAccess
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