Data/hora: 23/06/2024 19:09:00

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 14/09/1993
Data da última atualização: | 14/09/1993
Autoria: | RUSSO, L. W.; BISTLINE, F. W.
Afiliação: | Coca-Cola Foods, P.O. Box 247 Auburndale, FL 33823.
Título: | Results from a thiteen year study to study effective spray timing with greasy spot (Mycrosphaerella citi) sporr populations on east and ridge area groves.
Ano de publicação: | 1992
Fonte/Imprenta: | Florida State Horticultural Society. v.105, p.19-20,1992.
Idioma: | Inglês
Conteúdo: | The greasy spot spore monitoring program began in 1976 following consistently heavy disease incidence in several company groves. Poor spray coverage, insuficient fungicides and ineffective spray nozzling were often targeted as causes. However, our observations showed that in some years infection occurred before spray applications. Spore populations and germ tube growth ewere monitored by battery operated spore traps set up in conjunction with hygrothermographs and rain gauges. The data gathering locations were under trees in east coast and ridge area groves. During several years, when weather conditions were such that the spring and fall flushes were not severly infected, a June/July spray was sufficient. In other years we observed high populations of germinating spores as early as March and as late as mid-September, indicating a deviation in standard sprai practices was in order when a significant flush was present. Field evaluations were made by visual inspections and by tagging individual spring flushes to determine the effectiveness of sprays applied during hifh populations of germinating spores.
Palavras-Chave: | Controle.
Thesagro: | Doença; Germinação.
Thesaurus Nal: | Citrus.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (2217-1) - ADC - AP - -- - 635.05 -  - 635.05 - DIS