Fish Emulsion: Organic Fertilizer for Thriving Plants
Fish emulsion fertilizer is a quick-acting, organic liquid made from fishing industry byproducts like fish bones, scales, and skin. It’s rich in nitrogen, phosphorus, and potassium, along with trace elements like calcium, magnesium, and sulfur. Fish emulsion is known for its ability to provide a nutrient boost to plants, improve soil health, and promote growth.
Historical Use
Fish emulsion has been used as a natural fertilizer for centuries. Ancient Roman and indigenous cultures in the Americas were known to use fish waste to fertilize crops. Native Americans, for example, would bury fish in the soil to decompose and provide nutrients to their crops. This practice was observed by settlers in Jamestown in 1607.
Nowadays, it is commonly used via a soil drench or foliar spray. It’s especially beneficial for leafy greens and vegetables due to its high nitrogen content. However, it can have a strong fishy odor, so it’s best to apply it when you don’t mind the smell.
Creation Process
The process of creating fish emulsion starts off by collecting fish waste, which includes fish bones, scales, skin, and guts. This waste is often sourced from fish processing plants. The collected fish waste is then blended with water to create a thick paste. This mixture is then placed in a large container. Unsulfured molasses is then added to the mixture. Molasses acts as a food source for beneficial bacteria, which helps in the fermentation process. The container is covered and left to ferment for several weeks. During this time, the fish waste breaks down into a nutrient-rich liquid due to the action of bacteria. After fermentation, the mixture is strained to remove solid particles, leaving behind a liquid emulsion.
Application
To use fish emulsion in your garden, all you have to do is mix the fish emulsion with water. Typically, a common ratio is 1 tablespoon of fish emulsion per gallon of water. Depending on your fertilizing technique:
- Pour the diluted fish emulsion around the base of your plants, directly onto the soil.
- Fill a spray bottle with the diluted mixture and spray it onto the leaves of your plants.
- After applying, give your plants a good watering to help the nutrients seep into the soil. For most plants, you can apply fish emulsion every 2-4 weeks during the growing season but be cautious not to over-fertilize, as too much nitrogen can harm your plants and lead to bolting.