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| RECHE,MARIA HELENA L.R.; MACHADO,VILMAR; SAUL,DANILO A.; MACEDO,VERA R.M.; MARCOLIN,ELIO; KNAAK,NEIVA; FIUZA,LIDIA M.. |
| 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agrosystems; Irrigation; Rice field; Spatial variation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100361 |
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