Native American tribal groups in many regions would bury a fish when planting seeds. In bygone years, fish fertilizer was very common as a way to boost plant growth. How Does Fish Fertilizer Work?įish parts about to be turned into a hydrolized fish fertilizer. However, it’s only viable in an aquaponics system, and is not commercially available on its own. Much like animal manure, fish waste is a very viable fertilizer source. Nutrients in the waste are absorbed by the soil, and any excess water are piped back to the tank. The garden acts as a filtration system for the water, removing any particulate in the water. As the fish produce waste and it breaks down in the water, a pump will direct some of the water to the garden. In an aquaponics system, fish live in a tank or pond system attached to a garden space. This is a term used to refer to the waste products that fish themselves produce while alive. These nutrients are easily absorbed by the plants and act as a good nutrition source. It can take some time for fermentation to occur, and it’s pretty stinky while it’s happening! The remaining liquid fertilizer is filled with fish amino acids, proteins, and more. It is then fermented to break down the fish material into a liquid fish fertilizer.ĭIY fish fertilizer uses a similar process of fermentation to break down the fish. Internal organs, fish heads and tails, scales, meat, and bones may be involved in the process. Typically a batch of hydrolysate is made from whole fish or the remnants from fisheries. It’s produced in a different way than fish emulsion is, and can even be done at home. It’s liquid and may be thick, and it has a pungent fishy aroma. Hydrolized fish fertilizer has a similar end product to fish emulsion fertilizer.
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