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Water Quality Irrigation 7.1 Effects To our knowledge, no known effects of total or dissolved organic carbon in irrigation waters supplied to crops have been documented.
There are no criteria for total and dissolved organic carbon specific to irrigation water available from any other jurisdiction.
There is insufficient information to derive water quality criteria for total and dissolved organic carbon for this water used.
The effects
to plants of water with high levels of organic carbon observed
in aquatic systems are due to reductions in light quality and
quantity (BC Environment 1998a). Such effects are highly unlikely
for terrestrial plants exposed to irrigation waters with high
levels of organic carbon. If the water were to impart a toxic
effect to crops, it would be due to other physical, biological
and/or chemical parameters in the water. Existing criteria
for these parameters should protect crops from being harmed.
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