Abstract:
The water hyacinth (Eichhornia crassipes) has been classified as an obnoxious freshwater
weed in the tropical and subtropical regions of the world due to its rapid growth rate and
asexual reproduction. In Sri Lanka widespread infestations occurred since its introduction
to the Botanical Gardens in 1904. However it is reported that the aerial tissues (i.c. stems
and leaves) of water hyacinth could be effectively utilized for biogas production under
anaerobic conditions.
