Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/458775
Research center of Embrapa/Collection: Embrapa Soja - Artigo em periódico indexado (ALICE)
Date Issued: 1994
Type of Material: Artigo em periódico indexado (ALICE)
Authors: ALMEIDA, A. M. R.
BERGAMIN FILHO, A.
AMORIM, L.
Additional Information: EMBRAPA-CNPSo. Londrina, PR.
Title: Disease progress of soybean bud blight and spatial pattern of diseased plants.
Publisher: Journal of Plant Diseases and Protection, v.101, n.4, p.386-392, 1994.
Language: en
Keywords: Fitopatologia
Distribuicao espacial
Desenvolvimento temporal
Brasil
Soybean
Phytopathology
Disease
Bud blight
Spatial pattern
Temporal development.
Description: 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.
Thesagro: Epidemiologia
Doença
Queima do Broto
Soja
Vírus.
NAL Thesaurus: Brazil
epidemiology.
Data Created: 1995-05-16
Appears in Collections:Artigo em periódico indexado (CNPSO)

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