produtividade e principais problemas fitossanitários de cultivares de batata em sergipe yield and phytosanitary problems of potato cultivars in sergipe, brazil

Clicks: 261
ID: 185794
2002
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Abstract
Sete cultivares de batata (Solanum tuberosum L.) foram avaliadas durante três anos em Itabaiana-SE, com o objetivo de verificar a potencialidade de produção à altitude de 180 m e identificar os problemas fitossanitários que afetam a produtividade. Os experimentos foram conduzidos nos meses de junho a setembro, utilizando-se o delineamento experimental de blocos ao acaso, com cinco repetições. Após a colheita foram avaliadas a produção total, comercial (tubérculos sadios e com peso mínimo de 40 g) e perdas de produção decorrentes de sarna, podridão-mole, nematóide e insetos do solo. A análise conjunta das produções totais e comerciais de tubérculos revelou que as cultivares mais produtivas foram Baronesa (33,7 t/ha), Monalisa (32,7 t/ha) e Elvira (31,4 t/ha). A produção comercial variou de 3,4 t/ha a 22,5 t/ha, destacando-se as cvs. Elvira e Monalisa, com rendimentos de 22,5 t/ha e 20,5 t/ha respectivamente, com apenas três pulverizações com defensivos. Os problemas fitossanitários que mais afetaram a cv. Elvira foram sarna (13,1%) e nematóide das galhas (7,2%), enquanto a 'Monalisa' teve sua produção prejudicada mais pela incidência de insetos (15,1%), sarna (12,0%) e nematóide (9,7%). A cv. Monalisa apresentou tubérculos com melhores características para comercialização e está sendo cultivada a nível comercial em substituição às variedades Bintje e Baraka anteriormente cultivadas na região. Os resultados indicam a potencialidade da região de Itabaiana para a produção de batata.
The yield potential and main diseases affecting productivity of seven potato (Solanum tuberosum L.) cvs. were evaluated during a three years period in experiments carried out at low altitude conditions of Sergipe State, Brazil. The experimental plots were located at 180 m of sea level in a Red-Yellow Podzolic sandy-clay texture soil. The experimental design was of complete randomized blocks with five replications. Tubers were sown yearly in June and harvested in September. After harvest, total yield, commercial yield (healthy tubers with 40 g minimum weight) and losses caused by scab, soft-rot, nematodes, and soil insects were evaluated. The analysis of variance for total and commercial yield of tubers highlighted Baronesa (33.7 kg/ha), Monalisa (32.7 kg/ha), and Elvira (31.4 kg/ha) as the most productive cvs. The commercial yields varied from 3.4 t/ha to 22.a t/ha. The cvs. Elvira and Monalisa, yielded 22.5 kg/ha and 20.5 kg/ha, respectively. Only three insecticides applications were necessary. Scab (13.1%) and nematode (7.2%) were the main phytosanitary problems affecting Elvira cv. In relation to Monalisa, pin larvae soil insect (15.1%), scab (12.0%), and nematode (9.7%) were the main causes of yield loss. Because of its best commercial tuber characteristics Monalisa has been planted instead of Bintje and Baraka, both commonly used in the region. The results indicate the suitability of Itabaiana region for potato production.
Reference Key
nunes2002horticulturaprodutividade Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Maria Urbana Corrêa Nunes
Journal research on biomedical engineering
Year 2002
DOI
10.1590/S0102-05362002000300005
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362002000300005
Keywords
adaptation insect disease

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