Scientists have shown New Zealand plants could substantially reduce E.coli contamination caused by dairy effluent.
Researchers have tested extracts from 12 native species, with some reducing bacteria by up to 90 per cent in a much shorter time period than a control.
Katy Gosset finds out more at the Bio-Protection Research Centre.
Hossein Alizadeh with some of his many plants in his office at Lincoln University Photo: Katy Gosset/RNZ
