EN 
IN
UNUD-PKW Develops Organic Fertilizer Production from Water Hyacinth and Weed Plants in Lake Buyan, Pancasari-Buleleng Regency.
26/06/2020 Views : 216
I Gede Suranjaya
Water hyacinth (Eichornia crassipes) and water algae or green algae (Chlorophyta) are disturbing plants or weeds in the waters of Lake Buyan. These plants can cause negative impacts in the form of disruption to water use, accelerate siltation, complicate water transportation and reduce fishery yield. Water hyacinth and green algae have a very fast growth rate in fertile waters that can reduce the productivity of the water source. In a short time the development and growth of water hyacinth can cover 20-70% of the water area. On the other hand, its potential as a source of alternative organic material (biomass) for fertilizer production is quite good. The level of production of water hyacinth and green algae biomass can reach 20-30.5 kg per m2 or 200 - 300 tons per Ha.
Udayana University Regional Partnership Program (PKW) in collaboration with Dwijendra University, the Government of Buleleng Regency and the community around Buyan Lake, namely the "Bulian Amertha Sari" Farmer Group, developed organic fertilizer production from water hyacinth and lake weeds using fermentation technology. Through fermentation technology using fermentor-mollases, water hyacinth and weed plants are processed into solid organic fertilizer and liquid organic fertilizer.
This activity was carried out in July 2018 and aims to develop and increase the production of organic water hyacinth and lake weed fertilizers so that they can support the development of environmentally friendly agricultural systems around the lake. This activity is also an effort to take part in maintaining the cleanliness and preservation of Lake Buyan. According to the head of the "Bulian Amertha Sari" Farmer Group Gede Sedana Putra, the community around the lake is very supportive of this activity because of its perceived benefits in preserving the waters of Buyan Lake. Besides that, it can also economically increase the income of the community, especially group members, by selling organic fertilizer or water hyacinth mols that are needed by the surrounding farmers. All activities are funded from the Ministry of Research, Technology and Higher Education funding sources.