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Revista Brasileira de Fruticultura
Article . 2009 . Peer-reviewed
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Revista Brasileira de Fruticultura
Article
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Condições microclimáticas em um parreiral irrigado coberto com tela plástica

Authors: Conceição, Marco Antônio Fonseca; Marin, Fábio Ricardo;

Condições microclimáticas em um parreiral irrigado coberto com tela plástica

Abstract

A região de Jales é uma das principais produtoras de uvas de mesa do Estado de São Paulo. As videiras da região são irrigadas e conduzidas, normalmente, no sistema latada, sendo comum, também, a utilização de coberturas com telas plásticas para a proteção contra granizo, pássaros e morcegos. Entretanto, a irrigação, o sistema de condução e a cobertura plástica podem modificar as condições microclimáticas no parreiral. O presente trabalho teve como objetivo comparar as condições meteorológicas no interior de um parreiral de uvas, na região de Jales, com as registradas a céu aberto. As avaliações foram realizadas na Estação Experimental de Viticultura Tropical da Embrapa Uva e Vinho, em Jales-SP, em uma área conduzida no sistema latada, coberta com tela plástica de polietileno e irrigada por microaspersão. Os dados meteorológicos foram registrados fora e no interior do parreiral, empregando-se dois sistemas automáticos de aquisição de dados, com registros efetuados a cada 15 minutos. Verificou-se que o uso da cobertura de tela plástica reduziu em 20%, em média, a radiação solar incidente (Rs) acima do dossel. Os valores de Rs abaixo do dossel, durante o período de maior expansão foliar, chegaram a ser inferiores a 20% dos registrados a céu aberto. A temperatura e a umidade relativa do ar no interior do parreiral não apresentaram, em geral, diferenças para os valores registrados na estação meteorológica. Durante a irrigação, a temperatura do ar foi reduzida em 3%, e a umidade relativa do ar aumentou em 4%, em média, no interior do parreiral.

Keywords

air temperature, temperatura do ar, radiação solar, umidade relativa do ar, solar radiation, videira, relative air humidity, grapevine

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    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
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    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
13
Top 10%
Top 10%
Average
Green
gold