Water quality of the Canchim’s creek watershed in São Carlos, SP, Brazil, occupied by beef and dairy cattle activities

Brazilian Archives of Biology and Technology

Odo Primavesi²  Alfredo Ribeiro De Freitas²  Ana Cândida Primavesi²  Haydée Torres De Oliveira¹ 

[1] ,Embrapa Southeast-Cattle Research Center São Carlos SP ,Brazil

关键词: Dairy cattle;    Beef cattle;    Intensive management;    Pasture;    Water quality;    Watershed;   

DOI  :  10.1590/S1516-89132002000200013

来源: SciELO

【 摘 要 】

The Canchim’s creek watershed in São Carlos, SP, Brazil, was chosen to evaluate water quality affected by dairy and beef cattle production systems based on tropical pasture. The water samples were collected monthly, during three years, at six sampling points: spring in a tropical forest, spring in an intensive dairy production system, two dam springs, and stream water upward and at the delta. Results showed differences (P<0.01) among sampling points for the mean parameters. True color, hardness, turbidity, electric conductivity, alkalinity, pH, chemical oxygen demand and consumed oxygen explained well differences among sampling points. According to current legislation standards, water quality fitted with most of the established parameters for class 2, with exception of phosphate and iron. The high levels of total phosphorus, except in the forest spring, classified this water in an eutrophic class, even where soil and water conservation practices were considered adequate.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License