Composting soybeans – Details How to compost soybeans to effectively fertilize plants! – The secret to self-producing super fertilizer for plants

Chemical fertilizers used over a long period of time will cause the soil to become degraded and hard. Soybean fertilizer is an organic fertilizer derived from nature, so it is very good for the soil. It will make the soil loose and breathable, add biological nitrogen to the soil, and help plants stay green and lush.

In this article, Microbiological products share with you: 3 ways to compost soybeans

Method 1: Compost pureed soybeans

Method 2: Compost whole soybeans

Method 3: Instructions on how to ferment soybean flour and oil cake

And in this article, Duc Binh microbiological products share more how to mix soybean fertilizer to water plants most effectively.

How to compost soybeans to water plants

The most effective way to compost soybeans and water roses, orchids, vegetables…

See more details:

1. Compost pureed soybeans

1.1 Prepare ingredients and tools

To compost soybeans, the first ingredient needed is soybeans. Depending on the region, soybeans are also called soybeans or soybeans.

When buying, you should choose the worst type of soybeans because buying cheap ones will save a lot of money

Next, you should prepare a bucket, which can be purchased at plastic stores. It is also known as round barrel and there are many sizes to choose from. Remember, when choosing a bucket for composting, you must find one that is 5-6 times the volume of soybeans to be composted.

Molasses, molasses or cane sugar (crush with a hammer or chop with a knife): can be bought at the market, dry goods

EMZEO soybean composting probiotic: a type of microbial product that decomposes protein and substances in soybeans into nutrients for plants and eliminates the stench produced during the composting process.

Clean water: choose clean water that is not contaminated with alum or salinity. You can use rain water, pond water, filtered well water, tap water (you should take tap water into a bucket and leave it overnight to evaporate all the chlorine)…

Blender: Used to puree soybeans.

How to compost soybean meal

Composting soybeans by pureeing is quicker to use and has higher quality

1.2 Steps

To ferment 10kg of pureed soybeans, proceed as follows:

Step 1: Soak soybean seeds with sugar water for 8 – 10 hours (soak overnight)

– Take 16 liters of clean water and put it in a bucket

– Dissolve 600ml of molasses (500 – 600gr of cane sugar or table sugar)

– Put 10kg of soybeans into a bucket of sugar water and cover the bucket to soak the soybeans

Step 2 Puree soybeans

– After soaking, the soybeans absorb sugar water and swell. Use a blender to puree the seeds.

– Add bean soaked sugar water to the machine to make it easier to puree

– Grind the soybeans and pour into a bowl

Step 3: Incubate soybeans with EMZEO biological product

EMZEO product’s main effect is to decompose protein and substances in soybeans into nutrients for plants, and eliminate odors generated during the soybean composting process. In addition, there are many other uses such as:

  • Organic decomposition, kills pathogens
  • Removes bad odors
  • Creating useful microflora
  • Making an effective soaked soybean product
Formula for composting soybeans as organic fertilizer for plants

Soybean compost formula as organic fertilizer for plants

How to proceed

– Stir well the soybeans soaked in pureed molasses with the following dosage: 10kg of soybeans with 1 200gr package of EMZEO biological product (You can add 2 EMZEO packages to speed up protein breakdown and eliminate odors). Put it in the compost bin and cover it tightly.

– To increase the efficiency of decomposing organic matter, every 4-5 days, open and stir once, then close the lid and continue to incubate. Keep the compost bin in a cool, dry place, away from rain and direct sunlight.

– After incubation for 15 days, add 15 liters of clean water, stir well and continue incubation. Stir once every 4 – 5 days

– The total incubation time for pureed soybeans is 25 – 30 days before it can be used. The soybean fertilizer solution obtained is the original solution used to dilute with clean water to irrigate plants.

Note: previously, to compost soybeans, two types of microbial products were needed: One type was used for composting, the other type supported protein breakdown and deodorized. Currently, EMZEO biological products have been improved and upgraded to high quality. Just use EMZEO to fertilize and deodorize soybeans most effectively and efficiently today.

Place where probiotics are sold EMZEO

2. How to compost whole soybeans

Steps to compost 10kg of whole soybeans

– Take 16 liters of clean water and put it in a bucket

– Dissolve 600ml of molasses (600gr of molasses or rock sugar)

– Put in 10kg of soybeans and soak them for 8 – 10 hours

– Add 2 packages of EMZEO biological products to break down proteins and organic substances

– Cover the compost tightly and keep it in a dry place, away from direct sunlight. Every 5-7 days, stir once and then cover and ferment.

– After incubation for 20 – 25 days, add 20 liters of clean water

– Total incubation time for soybean seeds is about 50 – 60 days

How to make soybean nitrogen fertilizer to fertilize plants by soaking soybean residue and oil cake with EM product

How to make soybean nitrogen fertilizer to fertilize plants with EM product

3. How to compost soybean meal on a large scale

Instructions for incubation process for 10kg of oil cake (soybean)

3.1 Preparation:

  • Soybeans, soybeans or oil cake: 10kg
  • Clean water  10 – 12 liters
  • EMZEO biological products: 1 pack of 200gr
  • Molasses (molasses, cane sugar): 500 – 600ml

3.2 The fastest way to brew without any bad smell

Step 1: Crushed soybeans and oil cake

Step 2: Mix well EMZEO product with oil cake in the ratio of one 200gr EMZEO package to 10kg of soybean powder

Step 4: After composting soybeans for 15 days, add 15 – 20 liters of water. Stir well and cover for another 10-15 days then take out and use

4. Recognizing successful soybean incubation

The soybean composting process is successful when the following signs appear:

  • The compost has a fragrant fermented soybean smell, without a foul smell
  • The incubation process, if sealed, will produce very strong gas and must be opened slightly to let the gas escape, then closed
  • After incubation for 4 – 5 days, when opened, there will be a layer of white microbial cells growing on the surface layer
Irrigation of soybeans for crops

Roses love soybean fertilizer

5. How to fertilize soybean plants

Depending on each type of crop, there is a suitable way to fertilize soybeans. Soybean fertilizer when composted with EMZEO will produce a soybean product that is an effective biological protein solution (a lot of amino acids). The best way to use soybean fertilizer is to spray the entire stem, leaves, and roots of the plant evenly. Because, the amount of biological protein from soybeans absorbed through leaves, stems… is 1000 times greater than absorption through roots.

5.1 Simple way to fertilize soybeans

The simplest way to water soybean protein solution is to mix soybean fertilizer with clean water, then spray or water all leaves, stems, and roots of the plant evenly…

How to mix soy protein solution to water plants:

– Take 1 liter of soybean liquid and filter through a stainless steel filter rack to get the liquid, remove the residue

– The residue can be used to fertilize plant roots or poured back into the bucket for further composting

– Mix the filtered soybean solution evenly  with clean water at a ratio of 1: 50 – 100 (1 liter of soybean solution mixed with 50 – 100 liters of clean water) to water leafy vegetables

– For fruits and vegetables such as peppers, tomatoes, cucumbers… you can increase the amount of soy protein, mixed in a ratio of 1: 30-50 (1 liter of protein solution mixed evenly with 30 – 50 liters of clean water)

– For roses and orchids, the ratio of soybean solution is 1: 20 – 30 (1 liter of protein solution mixed with 20 – 30 liters of clean water)

How to water:

– Evenly water all leaves, stems and roots

– Watering once a week (for leafy vegetables, watering once every 3-5 days)

– Use nitrogen irrigation in the early morning or late afternoon

– Do not use with other chemical products, plant protection drugs, pesticides

5.2 The most effective way to use soy protein

To improve the efficiency of nutrient absorption from soybean protein solution, while protecting plants from harmful fungi. Use soybean solution mixed with trichoderma antagonist fungus (spore form dissolved in soybean fertilizer water) to water or spray plants

How to use is as follows:

– Take 1 liter of soybean liquid (filtered) and 1 package of Trichoderma biological product 200gr

– Dissolve with clean water and then water the plants evenly from leaves, stems, and roots

– Mixing ratio: for vegetables and fruits: 1/100, for fruit vegetables and ornamental plants: 1:50, for roses and orchids: 1:30 – 40

– Spray once a week, can be used alternately with banana solution, fish protein solution…

– While using, if you encounter a situation where the soybean fertilizer has an unpleasant odor, you can add emzeo to reduce the odor

How to fertilize roses with soybean fertilizer

How to fertilize roses with soybean fertilizer

6. Effects of soybean fertilizer on plants

Soybean fertilizer has good effects and can be used for all types of plants. The most obvious ones are still flowers: roses, orchids, lilies, strawberries, and leafy vegetables, fruit vegetables, and ornamental plants

The effects of soybean fertilizer (soybean, oil cake) on plants are as follows:

– Provides biological protein nutrition, macro-nutrients and micronutrients for plants to absorb

– Protects the roots, stimulates strong roots, fat shoots, extremely strong buds

– Wrong flowers, big flowers, dark colors, long flowering time

– Strengthens plant resistance, helps plants stay healthy and resist pests

– Helps soil become loose, increases humus, improves degraded and poor soil

– Provides and creates an effective microbial ecosystem for soil and plants

– Reduce large amounts of chemical fertilizers and pesticides… for plants

– Limit yellowing leaves, root rot, node loss…

– Soybean fertilizer helps reduce nitrate levels in agricultural products most effectively

– Helps protect the environment and is safe for plants, animals and people

– Suitable for all types of plants

– Using soybean protein solution is the most effective method of growing organic vegetables today

Soybeans (soybeans) are very easy to find in our country, the way to compost soybeans is very simple and has so many useful effects for plants. Buy soybeans right away and make your own soybean fertilizer at home to use according to the detailed instructions above.

Note:  you should use a method of composting soybeans that suits your conditions. Wishing you good health and good care for your orchid garden, rose garden, and vegetable garden!

In addition, you can also use banana translation, translation fish fertilizer … alternately fertilize plants, or mix fertilizer together to supplement the balance of biological nitrogen (amino acids from animals and amino acids from plants)

7. Frequently Asked Questions

Okay. The way to compost soybean residue is similar to above, but the quality is a bit worse than composting  with soybeans.


No, because sugar is food for microorganisms, microorganisms cannot eat white sugar or apricot sugar. When composting soybeans, microorganisms eat molasses, rock sugar… to grow and decompose organic substances in soybeans.


Okay guys. Incubating soybean powder with trichoderma using the dry incubation method will be more effective. Powdered soybean fertilizer is used to fertilize roots and improve soil. Please follow the incubation method in the next article.


Humic is a substance that has the ability to stimulate rooting extremely strongly. Do not compost humic with soybeans because it does not have the function of degrading protein in soybeans. Humic should be mixed with soybean solution when fertilizing plants.


Okay, the incubation method is similar to the article above. However, you should combine brewing soy milk with eggs for greater efficiency.