National Seminar on Biodiversity and Conservation: Present Status and Future Perspectives
12-13th February, 2015.
STUDIES ON TURNING FISH WASTE INTO GARDENING FERTILIZER
Suganya, M., Renuka, C, K. Saravanan, and S. Elavarasi
PG and Research Department of Zoology
Nehru Memorial College (Autonomous)
Puthanampatti, Trichy, Tamilnadu – 621007.
The fish consumption per person has doubled on a worldwide basis and hence the
fishery waste on land has also increased. The discarding of fish waste creates
environmental problems as well as disposal problems. The common practice of disposing
the residue of the seafood industry into natural open bodies of water and landfills has on
odor problems, floating debris and visible surface slick, attractants of undesirable
predator species increased turbidity and dissolved oxygen depression of bodies of water.
Conventional methods for reutilization of fish waste are animal feeds, and composting
fertilizer. Composting fish waste is a relatively new and an environmentally sound
alternative to disposing of fish waste. It is economical, odorless and a biological beneficial
practice for sea food operation. The reutilization of fish waste as liquid fertilizer was
particularly economical alternative at present, and plant- scale production would be
necessary for commercialization.
Fish compost can be prepared with fish wastes such as tissues, bones and scales
mixed with three different substrates such as sugar, jaggery and palm jaggery in 1:1 ratio.
Fish compost characters such as odour, physical state, weight, pH and protein content
were estimated. Fertilizer value was estimated by analyzing the blooming effect and
tender leaf formation of rose plant. After 48 days, bad odour gradually turned into fruity
odour in fish waste mixed with cane sugar, cane jaggery and palm jaggery. They bone and
scales of fish became degraded and turned into liquid state. The blooming of flower in the
rose plant was increased after applying liquid fertilizer. Therefore, there is a need to find
ecologically acceptable means for reutilization of these wastes.
Key words: Fish waste, composting, liquid fertilizer.
45 Department of Zoology, St. Xavier’s College, (Autonomous)
Palayamkottai- 627 002.