Data/hora: 13/06/2024 04:43:24

Provedor de dados: 	87	
País: 	Brazil	
Título: 	Mycorrhizal Association and Microbial Activity of Soil Cultivated with Cassava After Application of Mesotrione and Fluazifop-p-Butyl	
Autores: 	Silveira,H.M.; Silva,D.V.; Melo,C.A.D.; Neto,M.D.C.; Saraiva,D.T.; Ferreira,E.A.; Silva,A.A.; Freitas,M.S.	
Data: 	2015-06-01	
Ano: 	2015	
Palavras-chave: 	Microbial biomass; Arbuscular mycorrhizal fungi; Herbicide; Manihot esculenta.	
Resumo: 	Soil is a very heterogeneous environment that allows the establishment of wide range of microorganisms populations, whose balance is affected by biotic and abiotic factors. This study has aimed to assess the effect of doses of mesotrione and fluazifop-p-butyl herbicides and two assessment periods on microbial activity and biomass of soil cultivated with cassava Cacau-UFV cultivar, besides the root colonization by arbuscular mycorrhizal fungi. Two trials were conducted in a protected environment where was realized post-emergence application of mesotrione in the doses of 72, 108, 144 and 216 g ha-1 and fluazifop-p-butyl in the doses of 100, 150, 200 and 300 g ha-1, besides a control without application. Soil samples were collected for determination of soil respiratory rate (RR), microbial biomass carbon (MBC), metabolic quotient (qCO2), and colonization of roots by arbuscular mycorrhizal fungi at the 30 and 60 days after applications (DAA) of the herbicides. Fluazifop-p-butyl increased the RR, MBC and the percentage of cassava roots colonized by mycorrhizal fungi in the assessment performed at 60 DAA. The larger effects of mesotrione on soil microbial indicators were up to 30 DAA, being the changes minimized at 60 DAA. It is concluded that the herbicides alter the soil microbial indicators, with effects dependent of the product, of dose applied and also of the period of assessment.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200275	
Editor: 	Sociedade Brasileira da Ciência das Plantas Daninhas	
Relação: 	10.1590/0100-83582015000200013	
Formato: 	text/html	
Fonte: 	Planta Daninha  v.33 n.2 2015	
Fonte: 	info:eu-repo/semantics/openAccess