analysis showed no significant differences between years,
between seasons, or between seasons within each year
when the abundance of faecal coliform (FC) or enterococci
(FE) were considered. However, the abundance of
these bacterial groups was significantly related to pH. By
contrast, there were significant differences in the abundance
of TC between years and between seasons. TC was
significantly more abundant in 2001 than in 2002, and
during the dry season than during the rainy season (Figure
3). However, the abundance of TC was not significantly
related to any of the environmental variables recorded
(pH, temperature, conductivity and dissolved oxygen concentration).
Table 1 shows the association between enteric virus, coliphages
and indicator bacteria when detected in irrigation
water. This association is clear as reflected by the p-value.
Positive samples for coliphages coincided more frequently
with the positive samples for indicator bacteria
than EV, or the other enteric viruses.
analysis showed no significant differences between years,between seasons, or between seasons within each yearwhen the abundance of faecal coliform (FC) or enterococci(FE) were considered. However, the abundance ofthese bacterial groups was significantly related to pH. Bycontrast, there were significant differences in the abundanceof TC between years and between seasons. TC wassignificantly more abundant in 2001 than in 2002, andduring the dry season than during the rainy season (Figure3). However, the abundance of TC was not significantlyrelated to any of the environmental variables recorded(pH, temperature, conductivity and dissolved oxygen concentration).Table 1 shows the association between enteric virus, coliphagesand indicator bacteria when detected in irrigationwater. This association is clear as reflected by the p-value.Positive samples for coliphages coincided more frequentlywith the positive samples for indicator bacteriathan EV, or the other enteric viruses.
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