Data/hora: 04/06/2024 16:56:36

Biblioteca(s): | Embrapa Soja.
Data corrente: | 16/05/1995
Data da última atualização: | 08/09/2015
Autoria: | ALMEIDA, A. M. R.; BERGAMIN FILHO, A.; AMORIM, L.
Afiliação: | EMBRAPA-CNPSo. Londrina, PR.
Título: | Disease progress of soybean bud blight and spatial pattern of diseased plants.
Ano de publicação: | 1994
Fonte/Imprenta: | Journal of Plant Diseases and Protection, v.101, n.4, p.386-392, 1994.
Idioma: | Inglês
Conteúdo: | Fourteen epidemics of soybean bud blight, caused by the tobacco streak virus, were monitored in two soybean cultivars ('IAC-4' and 'FT-10') for two years (1987 and 1988) at Arapoti County, state of Parana, southern Brazil. Disease incidence, based on different sowing dates, were analyzed for statistical fitness in several growth models. Ten epidemics were better described by the monomolecular model, while four epidemics were better described by the Gompertz model. The highest final level of disease incidence was y((f))= 0.6 in 1987 and 0.9 in 1988. There were no significant differences between the cultivars in relation to susceptibility. Early-crops always presented more disease than late-crops. The spatial patterns of diseased plants also changed according to sowing dates as determined by ordinary runs analysis. Diseased plants in early sowings had a random pattern, at first, later becoming clustered (Z below -1.64). In late sowings, diseased plants always had a random pattern.
Palavras-Chave: | Brasil; Bud blight; Desenvolvimento temporal; Disease; Distribuicao espacial; Fitopatologia; Phytopathology; Soybean; Spatial pattern; Temporal development.
Thesagro: | Doença; Epidemiologia; Queima do Broto; Soja; Vírus.
Thesaurus Nal: | Brazil; epidemiology.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/129099/1/digitalizar0002.pdf
Registro original: | Embrapa Soja (CNPSO)