Tube-net seaweed farming takes root along AP coast
Despite its potential, commercial seaweed farming in India's open seas remains limited due to strong wave action and environmental factors. Traditional bamboo raft-based mono-line farming, suitable for shallow, calm waters, often fails in rougher coastal areas.
To overcome this, scientists have developed a tube net-based farming method using floating high-density polyethylene (HDPE) rafts with a multipoint mooring system.
Speaking to TNIE, Joe K Kizhakudan, Principal Scientist and Head of ICAR-CMFRI's Visakhapatnam Regional Centre, said this system has shown structural stability and better yield in turbulent waters up to 10 metres deep.
Trials using Kappaphycus alvarezii off Visakhapatnam coast proved successful. Under the Pradhan Mantri Matsya Sampada Yojana (PMMSY), the government has promoted this system, establishing a unit in Budagatlapalem village in Srikakulam district. Subsidies are being provided to Self-Help Groups (SHGs) and fisher communities.
Seaweed is harvested every 45 days, with dry seaweed selling for Rs 80 to Rs 90 per kg. Ten kg of wet seaweed yields 1 kg of dry product. The required tubes last up to 10 years, making the model sustainable with low recurring costs.
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