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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Épocas de poda na videira Niagara Rosada em Santa Rita do Araguaia - GO / Pruning times in the grapevine Niagara Rosada in Santa Rita do Araguaia Goiás

MARTINS, Wesley Alves 24 July 2007 (has links)
Made available in DSpace on 2014-07-29T14:42:44Z (GMT). No. of bitstreams: 1 Weslwy alves martins.pdf: 1658428 bytes, checksum: 034cb01372fc23e0a439a66aedfd973a (MD5) Previous issue date: 2007-07-24 / The experiment was carried out in Santa Rita do Araguaia Goiás, in a commercial orchard settled in the Sperafico Site, with total area of 1,7 ha, placed on BR-364 Rd, Km 372, from Goiânia to Cuiabá. This trial with the grapevine Niagara Rosada was done from October 2007 to October 2008. The aim of the research was to study the characteristics of the cultivar Niagara Rosada (Vitis labrusca L.) undergone ten pruning times in Santa Rita do Araguaia GO. The cycle duration (pruning harvest) varied from 121 to 141 days for the 10 pruning times. The pruning times presented differences in the sum of degree-days needed to complete the cycle in the same site. The pruning times did not affect the form of the bunches significantly. Nevertheless, they affected the size of the bunches significantly, especially pruning time P9 (5/10/2008) with 11,60cm and P10 (5/24/2008). The largest berry diameter was found in the pruning times P1 (10/24/2007) and P2 (11/09/2007), with 18,60mm and 18,0mm respectively, patterns considered appropriate for cultivation of Niagara Rosada . The different pruning times showed influence on soluble solids levels, with the highest average of 18.4 ºBrix for pruning time P8 (4/26/2008). However, there was significant variation for the acidity titratable, and for the Ph, the highest value was 4.0, in pruning times P8, P9 and P10. The highest yield was obtained in pruning times P7 (3/28/2008) with 12,63 t ha and P10 (5/24/2008) with 12,12 t ha. Taking into account the thermal requirements and the cycle of the grapevine Niagara Rosada in Santa Rita do Araguaia, it is possible to estimate the date for each of the phenological sub- periods, as well as to predict harvest time. / O experimento foi desenvolvido no município de Santa Rita do Araguaia Goiás, em pomar comercial instalado no Sítio Sperafico, com área total de 1,7 ha, localizado na rodovia BR-364, km 372 no sentido Goiânia-Cuiabá. A condução do experimento com a videira Niagara Rosada foi durante o período de outubro de 2007 a outubro de 2008. O presente trabalho teve por objetivo estudar as características da cultura da uva Niagara Rosada (Vitis labrusca L.) submetida a dez épocas de poda no município de Santa Rita do Araguaia GO. A duração do ciclo produtivo (poda colheita) variou de 121 a 141 dias para as 10 épocas poda. As épocas de poda apresentaram diferenças no somatório de graus-dia necessários para completar o ciclo no mesmo local. As épocas de podas não afetaram significativamente a forma dos cachos, entretanto, afetaram significativamente o tamanho dos cachos, com maior destaque para as épocas E9 (10/05/08) com 11,60cm e E10 (24/05/08). O maior diâmetro de baga foi encontrado nas podas E1 (24/10/07) e E2 (09/11/07) com médias de 18,60mm e 18,0mm respectivamente, médias consideradas adequadas para a Niagara Rosada. As diferentes épocas de poda exerceram influência sobre os teores de sólidos solúveis, com uma maior média de 17,40 ºBrix para época E8 (26/04/08). Todavia, houve variação significativa acidez titulável, e para o pH, o valor mais elevado foi 4,0, nas podas E8, E9 e E10. A maior produtividade foi verificada para as épocas E7 (28/03/08) com 12,63 t/ha e E10 (24/05/08) com 12,12 t/ha. Conhecendo-se a exigência térmica e o ciclo da videira Niagara Rosada em Santa Rita do Araguaia, é possível estimar a data em que ocorrerá cada um dos subperíodos fenológicos e prever a época de colheita.

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