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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Whitefly, aphids and thrips attack on cabbage.
Autores:  LEITE, G.L.D.
PICANÇO, M.
JHAM, G.N.
MOREIRA, M.D.
Data:  2007-11-05
Ano:  2006
Palavras-chave:  Bemisia tabaci
Brevicoryne brassicae
Thrips tabaci
Brassica oleracea
Temperature
Nonacosane
Temperatura
Nonacosano
Resumo:  The objective of this work was to investigate the relationships between predators and parasitoids, leaf chemical composition, levels of leaf nitrogen and potassium, total rainfall, relative humidity, daylight and median temperature on the intensity of whitefly, aphid, and thrips attack on cabbage. Whitefly, aphids and thrips population tended to proliferate in the final stage of plant or reached a peak population about 40 days after plantation. The whitefly and thrips tended to increase with an increase in the median temperature. A dependence of Cheiracanthium inclusum and Adialytus spp. populations on whitefly and aphids populations, respectively, was observed. No significant effect was detected between K and nonacosane leaf content and aphid population. However, an increase in leaf N content was followed by a decrease of this insect population. No significant relation was observed between leaf N, K and nonacosane and whitefly and thrips populations. Highest nonacosane levels were observed in plants 40 days after transplant, and relative humidity correlated negatively with nonacosane. Natural enemies, especially the parasitoid Adialytus spp. and the spiders can be useful controlling agents of the whitefly and aphids in cabbage. Median temperature can increase whitefly and thrips populations.

2006
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  40729

http://www.alice.cnptia.embrapa.br/handle/doc/121266

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/107034/1/Whitefly.pdf
Editor:  Pesquisa Agropecuária Brasileira, Brasília, v.41, n. 10, p. 1469-1475, out. 2006.
Relação:  Área de Informação da Sede - Artigo em periódico indexado (ALICE)
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