How to compost fish manure without odor to make fish nitrogen fertilizer effective for fertilizing plants

Are you looking for an alternative to expensive chemical fertilizers but are worried about the strong stench of making your own organic fertilizer at home? How to compost fish protein using microbial technology is the perfect answer to help you own a “golden” source of nutrients for your plants while still ensuring environmental hygiene.

This article will guide you through the process of hydrolyzing fish protein into amino acids extremely quickly, without odor, helping your garden grow green and sustainable.

1. What is fish nitrogen fertilizer?

Fish protein fertilizer is a liquid organic fertilizer produced from the hydrolysis of fresh fish meat or by-products such as fish heads, fins, and intestines. Through the activities of microorganisms and enzymes, complex protein chains will be broken into short chains called amino acids.

• Nutrition ingredients: Contains all organic macronutrients N-P-K, trace elements (Ca, Mg, Fe, Zn) and vitamin groups A, D, B.
• Existence state: Usually in liquid form (fish protein fluid), brown in color and characteristic aroma of standard fermented fish sauce.
• Core value: Providing nutrients in the form of amino acids that plants can absorb immediately through leaves and roots without having to wait for a long time to decompose.

Fish nitrogen fertilizer is a fertilizer produced from the hydrolysis of fresh fish meat

2. Why should we fertilize plants with fish protein?

Making your own fish protein fertilization at home is not only an agricultural activity but also a smart economic and environmental solution.

• Save costs: Take advantage of cheap fish by-products to create high-quality fertilizer equivalent to expensive imported fertilizers.
• Reduce dependence on chemicals: Limit the use of inorganic nitrogen fertilizers that cause hardening of the soil and pollution of groundwater.
• Safe for users: Composted fish fertilizer is completely organic, ensuring clean agricultural products, no toxic nitrate residue.

Fish nitrogen composting is a smart economic and environmental solution

3. Uses of fish nitrogen fertilizer

3.1 For plants

Fish nitrogen fertilizer plays a role in stimulating the overall growth of plants.

• Super-speed absorption: Amino acids penetrate directly through cell membranes, helping plants recover quickly after pests or after harvest.
• Stimulates flowering and fruit set:Increases pollination ability, helps flowers bloom simultaneously, strong fruit stems and limits young fruit loss.
• Increase resistance: Natural sulfur compounds in fish help plants resist attacks by some fungi and insects.

The core effect of fish nitrogen fertilizer on plants helps plants grow quickly and the soil is loose

3.2 For planting soil

Using fish protein fluid helps nourish the “ecosystem” below ground in a sustainable way.

• Improving soil structure: Adding organic humus helps the soil become loose, increases water holding capacity and aeration for the root zone (Rhizosphere).
• Activate native microorganisms: Molasses and nutrients in fish are rich food sources for beneficial bacteria in the soil to grow strongly.
• Soil detoxification: Supports the neutralization of harmful substances such as alum, salinity and chemical residues from previous crops.

Using fish incubation to water plants is suitable for growing organic plants, especially when plants lack nitrogen, are stunted, grow slowly and lack nutrients. Fish nitrogen fertilizer is an organic biological protein solution that can be used throughout the entire plant care process. Fish composting helps reduce the amount of chemical fertilizer by 50% and improve fertilizer use efficiency.

Fish nitrogen fertilizer has many uses for soil and plants

4. How to compost fish protein quickly and without odor

To shorten the decomposition time from 6 months to 30 – 45 days, you need to master the process of mixing fish with probiotics. Duc Binh Microbiological Products detailed instructions Fish composting technique making fish protein solution to water plants

4.1 Prepare ingredients

• Main ingredients: 30–50 kg of fresh fish or fish by-products (head, intestines, bones).
• Energy source: 5 kg molasses (Molasses) for microorganisms to multiply.
• Biological products: 2 – 3 packets fish fermentation yeast EMZEO both hydrolyzes fish quickly and deodorizes effectively (can add trichoderma mushroom or original Em product, Em1 – Emgro, if not omitted). Biohydrolytic enzyme from emzeo preparation is the “key” to help fish dissolve quickly and not rot.
• Natural additives: 2 chopped ripe pineapples help supplement bromelain enzyme to support the decomposition of fish meat.

Note: Ratio for 1 drum of 200 liters

You should use emzeo yeast to compost fish nitrogen fertilizer because:

• The quality of fish protein fluid will be better, creating a line of high-quality microbiological organic fish fertilizer
• EMZEO decomposes fish quickly and eliminates odors more effectively.
• Simple, easy to do, takes little effort, 100% successful

4.2 Conduct incubation according to scientific steps

1. Preparation: If possible, you should puree or chop the fish to increase the contact area with microorganisms.
2. Activate microorganisms: Dissolve molasses, emzeo fish yeast (Em original product or trichoderma mushroom) in 100 liters of clean water. Stir well and leave for 4 – 6 hours for the microorganisms to “wake up”.
3. Mixing: Put the fish in a plastic drum and pour in the activated microbial mixture. Use a stick to stir well so that the liquid covers the entire surface of the fish.
4. Block the fish and cover it tightly: Use a net or bamboo stick to compress it tightly to prevent the fish from floating on the water surface (to avoid maggots). Close the lid tightly but there must be a small air hole to avoid gas pressure causing the tank to explode.

Composting Fish nitrogen fertilizer is fast and odorless

Note: If the fish protein fluid has a bad odor during the composting process, you can add EMZEO preparation to deodorize the fish compost (100kg of composted fish sprinkled with 1-2 packs of EMZEO + 2 liters of molasses). To shorten the fish incubation time, increase the amount of EMZEO fish fermentation yeast and molasses.

EMZEO fish composting yeast – the most effective foul-smelling EM microbial product today

5. Compare popular fish protein incubation methods

How to compost fish without odor thanks to EM product (emzeo), which creates fish nitrogen fertilizer that is both fast and odorless, bringing different results

6. How to use fish nitrogen fertilizer after composting

Absolutely do not use pure fish protein solution for direct irrigation. You need to dilute according to the standard ratios below.

6.1 For short-term crops (Vegetables, Kale, short-term flowers)

• Mixing ratio: 1 liter of fish fluid mixed with 200–300 liters of clean water.
• How to fertilize: Spray mist on the leaves or water the roots periodically every 5–7 days. Should be done in the early morning or late afternoon.

6.2 For ornamental plants, roses, orchids and fruit trees

• Growth stage: Mix 1 liter of fish liquid with 150 liters of clean water, water periodically every 10 days to help thick green leaves and strong branches.
• Fruit growing stage: Mix 1 liter of fish liquid with 100 liters of water, combine with potassium to help the fruit be sweet, firm and beautiful in color.

You need to dilute fish nitrogen fertilizer when using it

How to use fish feces most effectively, providing nutrients and protecting plants from fungal diseases, nematodes, yellow leaves, easy rot, pus…? You should mix the stock fish solution with a trichoderma antagonist mushroom product (water-soluble type) to water or spray the plants.

How to use fish protein solution to fertilize plants effectively:

1 liter of fish protein solution + 1 package of 200gr trichoderma antagonist mushroom + 200 – 300 liters of clean water  —-> Stir well —> Filter the residue to get the fish liquid born

– Fish protein fluid will be used to spray and wet all leaves, stems, and roots of the plant

– Filtered fish residue, added to fertilize plants

– Using fish fluid together with antagonistic fungus trichoderma – Duc Binh will increase the plant’s absorption efficiency of fish protein by 2 – 3 times

– Use fish protein solution to water plants once every 10 – 15 days

7. Things to know when composting fish at home

• You should choose freshwater fish to compost fish, you can use fish heads, fish intestines, fish bones, whole fish… for composting. If it is saltwater or salted fish, you must make sure to remove as much salt as possible. Because saltwater fish will take more time to ferment than freshwater fish. Because the amount of salt is quite high, you should not use saltwater fish fertilizer to fertilize the leaves.
• During the fish incubation process, probiotics will be very active, producing a lot of gas. Therefore, you need to choose a fish compost bin with a capacity larger than the amount of fish and create ventilation holes or occasionally open the compost bin to let the steam escape. The compost bin must be tightly covered to prevent flies, houseflies… from entering and laying eggs to produce maggots
• Ensure cleanliness, use clean water to brew.
• Always keep the fish submerged below the water surface: The part of the fish that floats to the surface without being covered by microorganisms will be where flies lay eggs and give birth to maggots.
• Absolutely no shortage of molasses: Without molasses, microorganisms will lack energy, leading to interrupted decomposition and creating a foul smell.
• Replace molasses: If you can’t buy molasses, you can use rock sugar or white sugar. However, the effectiveness of multiplying microorganisms will not be as high as pure molasses.

Notes you need to know when fertilizing fish protein at home

8. Frequently asked questions about fish protein compost

8.1 Why should you compost fish protein fertilizer with molasses?

Molasses provide carbon and minerals (P, K, Mg) for beneficial bacteria. The fermentation process of molasses produces organic acids that lower the pH to 4.0, helping to completely inhibit rotting bacteria, thereby effectively eliminating odors.

8.2 If maggots appear in the fish compost bin, how to handle it?

Maggots appear because flies lay eggs in the fish flesh floating on the water surface or the lid of the container is not tight. To handle it, please follow these steps:

• Adding maggot tobacco leaves: Crush about 10-20g of maggot tobacco leaves and put them in the compost bin to kill larvae.
• Enhancing microorganisms: Add a small amount of EMZEO or EM2 to molasses to speed up fermentation, changing the living environment of maggots.
• Compact tightly: Make sure the entire fish carcass is completely submerged under the water surface and close the lid tightly.

8.3 Can saltwater fish (sea fish) be used to ferment fish protein?

Absolutely, however, you need to note an important detail: Saltwater fish often contains high amounts of salt, if not handled carefully, it will cause soil salinization and affect the microbiological system.

You should wash the fish in clean water to remove any salt on the outside before putting it in the compost bin. And when using protein solution from saltwater fish, you should dilute it more (ratio 1/300 or 1/400) to ensure safety for sensitive plants such as orchids or roses.

8.4 How long can fish nitrogen fertilizer be stored after composting?

If properly incubated and stored in ideal conditions (dry, cool place, away from direct sunlight), fish protein fluid can retain activity from 6 to 12 months.

Quality fish feces is when the solution settles into 2 distinct layers, has a characteristic fish sauce aroma, and does not have a strong rotten smell. You should not leave fish feces for too long (over 1 year) because the content of beneficial microorganisms will gradually decrease over time.

8.5 Should fish protein solution be mixed with Trichoderma fungus when watering?

Very good. This is the perfect combination of nutrition (fish protein) and protection (antifungal). Mixing together helps plants receive both amino acids to grow quickly and Trichoderma fungus to protect the roots from pathogens such as Fusarium or Phytophthora. However, you should only mix it right before watering and you should not leave the mixed mixture for more than 24 hours.

8.6 Why should fish protein solution not be mixed with chemical pesticides?

The active chemicals in pesticides will destroy the entire beneficial microflora that you have painstakingly cultivated in fish protein fluid. This loses the biological value of the fertilizer. If you need to spray, you should separate fertilizing between fish protein and chemicals for at least 5–7 days.

9. Buy reputable fish protein incubation products at Duc Binh microbiological products

To realize a 100% successful odorless fish protein composting process, you need microbial and enzyme products with strong potency. Duc Binh microbial products is a leading reputable unit providing a set of solutions for intensive fish composting.

Duc Binh Microbial Products – Center for Research and Application of Biological Products

• Address: 1B Alley 774 Kim Giang, Thanh Liet, Hanoi.
• Support hotline: 024.66.55.46.86
• Phone: 0934.214.579.
• In-depth technical consulting: 0915.79.80.85 (Consulting engineer).
• Sales department/Zalo: 0934.214.579.
• Official website: https://chephamvisinh.vn

Order the fish protein incubation set now at Duc Binh Microbial Products – Commitment that the fish dissolves quickly, has no odor, and is rich in nutrients! Duc Binh Microbial Products a unit specializing in research, production and application of biological products such as: Biological product brand Emzeo, trichoderma mushroom, em products, environmental microorganisms, organic fertilizers biomechanics …