Fig. 4. Effects of stocking rates on E. coli concentration: high (1.5 stock units [SU]/400 m2), medium (1 SU/400 m2), and low (0.1 SU/400 m2). The above rates were applied to the first 90 d, no stocks to the second 90 d.
Fig. 4. Effects of stocking rates on E. coli concentration: high (1.5 stock units [SU]/400 m2), medium (1 SU/400 m2), and low (0.1 SU/400 m2). The above rates were applied to the first 90 d, no stocks to the second 90 d.