Data/hora: 02/06/2024 09:22:36

Biblioteca(s): 	Embrapa Soja.	
Data corrente: 	18/05/1993	
Data da última atualização: 	27/10/2004	
Autoria: 	JACOBSEN, B. J.; BACKMAN, P. A.	
Afiliação: 	Department of Plant Pathology, Alabama Agricultural Experiment Station, Auburn University, Alabama 36849-5409 (USA).	
Título: 	Foliar fungicides: application considerations.	
Ano de publicação: 	1989	
Fonte/Imprenta: 	In: CONFERENCIA MUNDIAL DE INVESTIGACION EN SOJA, 4., 1989, Buenos Aires. Actas... Buenos Aires: AASOJA, 1989.	
Volume: 	t.3	
Páginas: 	p.1368-1372.	
Idioma: 	Inglês	
Conteúdo: 	Foliar applied fungicides such as benomyl, thiabendazole, thiophanate-methyl, and chlorothanil have been widely used to reduce yield losses and seed quality problems caused by fungi. However, yield and seed quality increses following fungicide application are usually less in production fields than those observed in research plots where equivalent disease levels occur. The primary reasons  are improper application of the fungicide. Aircraft are most commonly used when applying fungicides to soybeans because of the large acreages which need to be sprayed, the limited time optimal for response, and the dense crop canopy typical for row widths of less than 90cm. Ground driven equipment, of either hydraulic on air displacement design, can be effectively used in small fields, especially at wider row widths. The most common application errors include improper calibration, excessive drift of pesticide away from the target, insufficient carrier volume, insufficient coverage of spray droplets on susceptible plant surfaces, application under meteorological conditions adverse for deposition, and poor canopy penetration. Failure to consider these factors often results in deposition rates of 50% or less of expected deposition. Control of foliar  diseases such as Septoria brown spot, Cercospora leaf blight or leafspot, rust, and Rhizoctonia web blight, or stem and pod diseases such as pod and stem blight, anthracnose, and stem canker requires fungicide penetration into the plant canopy and deposition on stems, pods, and leaves..	
Palavras-Chave: 	Disease; EUA; Fungicida foliar; Fungicide; Fungus; Soybean; USA.	
Thesagro: 	Controle Químico; Doença; Fungo; Soja.	
Thesaurus Nal: 	chemical control.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Soja (CNPSO)