Data/hora: 10/06/2024 09:10:20

Provedor de dados: | 42
País: | Brazil
Título: | Microbial, physical and chemical properties of irrigation water in rice fields of Southern Brazil
Autores: | RECHE,MARIA HELENA L.R.; MACHADO,VILMAR; SAUL,DANILO A.; MACEDO,VERA R.M.; MARCOLIN,ELIO; KNAAK,NEIVA; FIUZA,LIDIA M.
Data: | 2016-03-01
Ano: | 2016
Palavras-chave: | Agrosystems; Irrigation; Rice field; Spatial variation.
Resumo: | ABSTRACT This paper presents the results of the statistical analysis of microbiological, physical and chemical parameters related to the quality of the water used in rice fields in Southern Brazil. Data were collected during three consecutive crop years, within structure of a comprehensive monitoring program. The indicators used were: potential hydrogen, electrical conductivity, turbidity, nitrogen, phosphorus, potassium, calcium, total and fecal coliforms. Principal Component and Discriminant Analysis showed consistent differences between the water irrigation and drainage, as the temporal variation demonstrated a clear reduction in the concentration of most of the variables analyzed. The pattern of this reduction is not the same in the two regions - that is, the importance of each of the different variables in the observed differentiation is modified in two locations. These results suggested that the variations in the water quality utilized for rice irrigation was influenced by certain specific aspects of each rice region in South Brazilian - such as anthropic action or soil/climate conditions in each hydrographic basin.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100361
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201620140466
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.88 n.1 2016
Fonte: | info:eu-repo/semantics/openAccess