Data/hora: 11/06/2024 03:43:53

Provedor de dados: 	95	
País: 	Brazil	
Título: 	Survey, survival and control of Alternaria alternata in wheat seeds	
Autores: 	Casa,Ricardo Trezzi; Kuhnem Junior,Paulo Roberto; Bogo,Amauri; Belani,Ana Maria Munerati; Bolzan,Jonatha Marcel; Oliveira,Filipe Souza; Blum,Marta Maria Casa.	
Data: 	2012-01-01	
Ano: 	2012	
Palavras-chave: 	Fungi; Seed health; Seed treatment; Triticum aestivum.	
Resumo: 	The fungus Alternaria alternata was quantified in 75 wheat seed samples collected from three different regions of southern Brazil for Cropping and Use Value (CUV) I, II and III. Fungal presence was evaluated in two hundred disinfested seeds per sample before sowing in a potato-dextrose-agar medium + antibiotic (PDA+A). Fungus survival was evaluated every 45 days for 180 days for three seed batches from six wheat cultivars stored in propylene bags in a storehouse, with air temperature varying between 18 to 22 °C and relative air humidity around 60%. The efficacy of carboxin+thiram, difenoconazol, thiram, triadimenol, triticonazol and triticonazol + iprodione fungicides to control A. alternata was determined. A. alternata was detected in all the samples with an incidences of 39.6 %, 38.8% and 35.9% for the CUV I, CUV II and CUV III regions, respectively. The highest mean incidence of the fungus was found in the CUV I region, the coolest and most humid, and was significantly different from the other two regions. The average reduction in A. alternata viability in the wheat cultivar seeds was 49.5% during the 180 days of storage (inter-harvest period), demonstrating that infected seeds are the primary inoculum source for the fungus. The triticonazol + iprodione fungicide mixture efficiently controls A. alternata.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000300001	
Editor: 	Associação Brasileira de Tecnologia de Sementes	
Relação: 	10.1590/S0101-31222012000300001	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Sementes  v.34 n.3 2012	
Fonte: 	info:eu-repo/semantics/openAccess