influência do sistema de condução no microclima, na produtividade e na qualidade de cachos da videira 'niagara rosada', em jundiaí-sp influence of training system on microclimate, yield and bunch quality of 'niagara rosada' grapevine, in jundiaí-sp
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2007
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Abstract
Este trabalho teve por finalidade comparar as características microclimáticas dos sistemas de condução em espaldeira e manjedoura e avaliar seus efeitos na produtividade e na qualidade dos cachos da videira 'Niagara Rosada'. O experimento foi realizado em área experimental do Instituto Agronômico de Campinas, localizada em Jundiaí (SP), em vinhedos de 'Niagara Rosada' enxertada sobre IAC-766, com espaçamento 2x1m. Avaliaram-se dois sistemas de condução: espaldeira com cordão esporonado único e manjedoura com cordão esporonado duplo. Foram feitas medições de radiação solar transmitida e temperatura do ar e do cacho, durante o ano de 2005, e avaliações de produção, número de cachos, massa dos cachos, número de ramos, índice de área foliar e teor de sólidos solúveis, durante os anos agrícolas 2004-2005 e 2005-2006. O sistema de condução de manjedoura proporcionou aumento significativo no comprimento do cordão esporonado, número de ramos e esporões por planta, índice de área foliar, número de cachos por planta, massa fresca dos cachos e produtividade. Comparando com o sistema de espaldeira, a manjedoura proporcionou um aumento de produção de 75% na média das safras avaliadas. Não foi observada alteração da temperatura à altura do cacho, havendo, no entanto, redução da insolação sobre os cachos no final do período de maturação. Em relação aos teores de sólidos solúveis totais, não se observou diferença estatística entre os tratamentos.
Different training systems were applied to 'Niagara Rosada' grapevine aiming to compare the differences in microclimate, yield and bunch quality. The grapevines were grown in the experimental farm of the Instituto Agronômico at Jundiaí, São Paulo State, Brazil. The 'Niagara Rosada' vines were grafted on IAC-766 rootstock and spaced by 2x1m. Two training systems were evaluated: unilateral single cordon with three vertical catch wires and double parallel cordon with sloped catch wires. Measurements of transmitted solar radiation, air and bunch temperature were taken during 2005 and evaluations of: yield, leaf area index, total soluble solids and bunch weight were done during the 2004/05 and 2005/06 growing seasons. The double cordon training system showed higher values of yield, number of bunches, bunch weight and leaf area index when compared to the single cordon training system. During the analyzed period the double cordon training system showed yield values 75% higher than the single cordon. The transmitted solar radiation at harvest was lower for the double cordon training system. It was not observed statistical differences in bunch temperature and total soluble solids for the training systems.
Different training systems were applied to 'Niagara Rosada' grapevine aiming to compare the differences in microclimate, yield and bunch quality. The grapevines were grown in the experimental farm of the Instituto Agronômico at Jundiaí, São Paulo State, Brazil. The 'Niagara Rosada' vines were grafted on IAC-766 rootstock and spaced by 2x1m. Two training systems were evaluated: unilateral single cordon with three vertical catch wires and double parallel cordon with sloped catch wires. Measurements of transmitted solar radiation, air and bunch temperature were taken during 2005 and evaluations of: yield, leaf area index, total soluble solids and bunch weight were done during the 2004/05 and 2005/06 growing seasons. The double cordon training system showed higher values of yield, number of bunches, bunch weight and leaf area index when compared to the single cordon training system. During the analyzed period the double cordon training system showed yield values 75% higher than the single cordon. The transmitted solar radiation at harvest was lower for the double cordon training system. It was not observed statistical differences in bunch temperature and total soluble solids for the training systems.
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jnior2007revistainfluncia
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| Authors | ;Mário José Pedro Júnior;José Luiz Hernandes;Marco Antonio Tecchio;José Ricardo Macedo Pezzopane |
| Journal | technocom |
| Year | 2007 |
| DOI |
10.1590/S0100-29452007000200024
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