Organic fertilizer is produced from biodegradable materials that contain organic matter and plant nutrients. Compared with synthetic fertilizers, organic fertilizer production makes it possible to recycle livestock manure, crop residues, agricultural by-products, food-processing waste, and other organic resources into useful soil amendments and fertilizer products.

However, choosing the right materials is only the first step. Different raw materials have different moisture levels, nutrient concentrations, carbon-to-nitrogen ratios, fiber structures, and decomposition characteristics. These differences affect fermentation, crushing, mixing, granulation, drying, and final product quality.

For commercial manufacturers, an organic fertilizer manufacturing line can integrate raw material preparation, composting, crushing, mixing, granulation, drying, cooling, screening, coating, and packaging. The production process can be customized according to the materials available in a particular region and the specifications of the final fertilizer.

This article explains what materials are needed to make organic fertilizer, how different raw materials are used, how to select and combine them, and how they are processed into commercial organic fertilizer products.

1. What Materials Can Be Used to Make Organic Fertilizer?

Organic fertilizer can be produced from many types of biodegradable resources.

Common materials include:

Cow manure
Chicken manure
Pig manure
Sheep manure
Horse manure
Poultry litter
Crop straw
Rice husks
Corn stalks
Sawdust
Vegetable residues
Fruit-processing waste
Food-processing by-products
Compost
Peat
Plant-based fibers
Other biodegradable organic materials

The exact material combination depends on the desired nutrient content, production cost, local availability, and fertilizer application.

2. Livestock Manure

Livestock manure is one of the most common raw materials for organic fertilizer production.

Manure contains organic matter and nutrients that can be recycled through composting and fertilizer manufacturing.

Common manure sources include:

Cattle
Dairy cows
Pigs
Sheep
Goats
Horses

Fresh manure generally contains significant moisture and should normally undergo appropriate stabilization or composting before commercial processing.

3. Cow Manure

Cow manure is widely used because it is relatively easy to collect from cattle farms and contains substantial organic matter.

It can be processed into:

Powdered organic fertilizer
Granulated fertilizer
Pelletized fertilizer
Soil amendments

Cow manure often contains fibrous material, which may require crushing after fermentation.

A typical process can be:

Cow Manure → Composting → Crushing → Mixing → Granulation → Drying → Cooling → Screening → Packaging

4. Chicken Manure

Chicken manure is another important fertilizer raw material.

It can provide valuable nutrients, particularly nitrogen and phosphorus.

However, poultry manure can have:

High moisture
Strong odor
High nutrient concentration
Fine particle characteristics

Therefore, controlled fermentation and moisture management are important.

After composting, chicken manure can be crushed, mixed with other materials, granulated, dried, screened, and packaged.

5. Pig Manure

Pig manure can also be used as an organic fertilizer raw material.

Because pig manure can contain considerable moisture, the production system should pay particular attention to:

Solid-liquid separation where necessary
Moisture adjustment
Composting
Drying

It can be combined with carbon-rich materials such as straw or sawdust to create a more suitable composting mixture.

6. Sheep and Goat Manure

Sheep and goat manure are valuable organic fertilizer materials.

They are often relatively dry compared with some other livestock manure sources.

This can make them convenient for composting and subsequent processing.

Sheep manure can be used alone or mixed with:

Straw
Crop residues
Compost
Other manure

After fermentation and crushing, it can be processed into granular fertilizer.

7. Horse Manure

Horse manure can contain a considerable amount of fibrous bedding material.

Depending on the source, it may include:

Straw
Sawdust
Wood shavings

These materials contribute carbon and organic matter.

Horse manure can therefore be suitable for composting and organic fertilizer production after appropriate stabilization.

8. Poultry Litter

Poultry litter may contain:

Manure
Bedding material
Feathers
Feed residues

It can be an effective raw material for organic fertilizer.

However, foreign materials should be removed where necessary, and moisture and nutrient levels should be tested before processing.

9. Crop Straw

Agricultural straw is another important source of organic matter.

Common examples include:

Wheat straw
Rice straw
Corn stalks
Barley straw
Sorghum stalks
Oat straw

Straw is generally rich in carbon and can help balance nitrogen-rich manure.

However, straw usually needs crushing or shredding before it can be mixed efficiently.

10. Rice Husk

Rice husk is widely available in rice-producing regions.

It can be used as a carbon-rich ingredient in organic fertilizer formulations.

Rice husk may require:

Crushing
Grinding
Mixing
Controlled composting

Its relatively resistant structure means that processing conditions should be selected appropriately.

11. Corn Stalks

Corn stalks can be recycled into organic fertilizer instead of being burned or discarded.

They contain:

Organic matter
Fiber
Carbon

A crusher or hammer mill can reduce corn stalks into smaller particles.

The processed material can then be mixed with manure or other nitrogen-rich materials.

12. Sawdust and Wood Residues

Sawdust can be used as a carbon-rich organic material.

It can help:

Improve compost structure
Absorb excess moisture
Increase carbon content
Improve aeration

However, excessive sawdust can create a high carbon-to-nitrogen ratio.

Therefore, it is usually better to combine it with nitrogen-rich materials such as manure.

13. Vegetable Waste

Vegetable-processing waste can be a useful organic fertilizer material.

Examples include:

Vegetable leaves
Peels
Stems
Processing residues
Spoiled vegetables

These materials can contain relatively high moisture and decompose relatively quickly.

They should be managed properly to prevent uncontrolled odor and biological problems.

14. Fruit Waste

Fruit-processing industries can produce large quantities of organic residues.

Examples include:

Fruit peels
Pulp
Seeds
Processing residues

These materials can contribute organic matter and nutrients.

However, their high moisture content may require mixing with dry carbon-rich materials.

15. Food-Processing Waste

Food-processing residues may include:

Brewery residues
Sugar-processing residues
Starch-processing waste
Vegetable-processing waste
Grain-processing by-products

The suitability of each material depends on its composition.

Before using industrial food waste, manufacturers should evaluate possible contaminants and verify that the material is appropriate for fertilizer production.

16. Compost as a Raw Material

Mature compost can also be incorporated into organic fertilizer formulations.

Compost provides stabilized organic matter and can improve the consistency of the final mixture.

However, compost should be sufficiently mature before being used.

Immature compost may continue decomposing and cause instability during storage.

17. Peat and Other Organic Materials

Peat and similar organic materials can be used in some fertilizer formulations.

They can contribute organic matter and help modify the physical characteristics of the final product.

However, availability, cost, local regulations, and environmental considerations should be evaluated before selecting such materials.

18. The Importance of Carbon-Rich Materials

Carbon-rich materials are important for composting.

Typical carbon-rich materials include:

Straw
Sawdust
Rice husk
Corn stalks
Dry leaves
Crop residues

These materials can help balance nitrogen-rich manure.

They can also improve the physical structure of compost and support aeration.

19. The Importance of Nitrogen-Rich Materials

Nitrogen-rich materials can include:

Chicken manure
Cow manure
Pig manure
Poultry litter
Certain food-processing residues

Nitrogen is an important nutrient for plant growth and also plays a role in microbial decomposition during composting.

The exact nitrogen content varies significantly between materials.

Therefore, laboratory analysis is recommended when developing a commercial fertilizer formula.

20. Carbon-to-Nitrogen Ratio

The carbon-to-nitrogen ratio is one of the most important factors during composting.

A mixture with excessive carbon may decompose slowly.

A mixture with excessive nitrogen may produce stronger odors and ammonia losses.

Combining materials with different characteristics allows manufacturers to develop a more balanced composting mixture.

For commercial production, the target ratio should be determined based on actual raw material analysis and the selected composting technology.

21. Water

Water is also an important processing material.

Although water is not normally considered a nutrient ingredient, it plays an important role in composting and granulation.

During composting, water helps microorganisms remain active.

During granulation, moisture can help particles bind together.

However, excessive water can create:

Poor aeration
Sticky material
Longer drying times
Higher energy consumption

Water should therefore be added in a controlled manner.

22. Microbial Products

Some organic fertilizer manufacturers use microbial inoculants during composting.

These may contain selected microorganisms intended to support decomposition.

Microbial products should be selected according to:

Raw materials
Composting conditions
Temperature
Moisture
Target product

Their use should follow the manufacturer’s recommendations and applicable regulations.

23. Mineral Additives

Some organic fertilizer products contain mineral ingredients to adjust nutrient composition.

Potential materials may include:

Natural phosphate sources
Potassium-bearing minerals
Lime
Gypsum
Trace-element materials

Whether these materials are appropriate depends on the fertilizer formula and local product regulations.

The amount should be controlled carefully to maintain the intended nutrient profile.

24. Nitrogen Supplements

In some formulations, additional nitrogen sources may be required.

Organic nitrogen materials can be selected according to the desired product specification.

However, manufacturers should distinguish between products marketed as organic fertilizer and products that contain significant synthetic fertilizer ingredients.

The final formulation should comply with the requirements of the target market.

25. Phosphorus Sources

Phosphorus is one of the major plant nutrients.

Some organic fertilizer products incorporate natural phosphorus-rich materials to increase phosphorus content.

The exact source should be selected according to:

Nutrient availability
Local regulations
Raw material cost
Product positioning

26. Potassium Sources

Potassium is another important plant nutrient.

Certain organic fertilizer formulations may include potassium-rich materials.

Combining nitrogen, phosphorus, and potassium sources allows manufacturers to produce fertilizers with different nutrient profiles.

The formula should be based on soil and crop requirements as well as product specifications.

27. Trace Elements

Some commercial fertilizers contain trace elements such as:

Zinc
Boron
Iron
Manganese
Copper

These materials are generally used in controlled quantities.

Uniform mixing is essential because trace elements are often added at relatively low inclusion rates.

28. Binders for Granulation

A binder may sometimes be required when producing granulated organic fertilizer.

Suitable binders can improve:

Granule strength
Particle formation
Product durability
Screening performance

The binder should be selected according to the granulation method.

Some formulations may not require additional binders if the raw material naturally has good binding properties.

29. Anti-Caking Materials

Some organic fertilizer products may benefit from anti-caking treatment.

Caking can occur when fertilizer absorbs moisture during storage.

An appropriate coating or anti-caking material can improve flowability.

However, the coating should be compatible with the fertilizer formula and target market.

30. Colorants and Coating Materials

Some commercial fertilizers are coated or colored to improve appearance or distinguish different product grades.

A coating system can apply a controlled layer of:

Organic liquid
Anti-caking material
Colorant
Nutrient solution

The use of such materials should follow applicable regulations.

31. How Raw Materials Are Combined

A commercial organic fertilizer formula may combine several categories:

Nitrogen-Rich Material

Carbon-Rich Material

Nutrient Sources

Organic Matter

Optional Additives

↓

Composting

↓

Crushing

↓

Mixing

↓

Granulation

This approach provides greater control over the final fertilizer composition.

32. Step 1: Test Every Major Raw Material

Before production, manufacturers should analyze each important material.

Tests may include:

Moisture
Organic matter
Nitrogen
Phosphorus
Potassium
pH
Particle size
Impurities

This data provides the foundation for formula development.

33. Step 2: Develop the Fertilizer Formula

Once the raw materials have been tested, the manufacturer can determine their proportions.

The formula should consider:

Target nutrient content
Composting characteristics
Moisture
Production cost
Granulation performance
Final application

Different crops may require different fertilizer formulations.

34. Step 3: Prepare the Raw Materials

Large materials should be crushed or shredded.

Wet materials may require dewatering or mixing with dry materials.

Foreign materials should be removed.

The objective is to create a suitable feedstock for fermentation.

35. Step 4: Compost the Mixture

The prepared mixture enters the fermentation stage.

During composting, operators should control:

Moisture
Temperature
Oxygen
Turning frequency
Fermentation time

Proper management produces more stable organic material.

36. Step 5: Crush and Screen the Compost

After fermentation, the material is crushed to break up lumps.

Screening removes oversized particles.

This prepares the material for accurate batching and mixing.

37. Step 6: Mix Additional Ingredients

Nutrient additives, binders, minerals, or other ingredients can be added according to the formula.

An industrial mixer should distribute the ingredients evenly.

Uniform mixing is especially important for trace elements.

38. Step 7: Granulate the Fertilizer

The prepared mixture enters a granulator.

The selected technology may include:

Disc granulator
Rotary drum granulator
Roller granulator
Organic fertilizer pellet machine

The target granule size should be determined before production.

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39. Step 8: Dry and Cool

Fresh granules are dried to achieve appropriate moisture.

After drying, they are cooled to stabilize the product.

Drying and cooling equipment should be matched to the production capacity.

40. Step 9: Screen and Recycle

Screening removes particles outside the desired size range.

Oversized material can be crushed.

Suitable fines can be recycled.

This improves production efficiency and reduces waste.

41. Step 10: Coat and Package

After screening, fertilizer may be coated if required.

It is then weighed and packed.

Automatic packaging machines can provide accurate and consistent package weights.

42. Equipment Required to Process These Materials

A commercial organic fertilizer machine system may contain:

Raw Material Handling

Hoppers
Conveyors
Storage bins

Pretreatment

Crushers
Hammer mills
Straw shredders
Screening machines

Fermentation

Compost turners
Fermentation tanks

Formulation

Batching system
Mixers

Granulation

Disc granulator
Rotary drum granulator
Roller granulator

Drying and Cooling

Rotary dryer
Cooler
Hot-air furnace

Finishing

Screening machine
Coating machine
Packaging machine

Environmental Protection

Cyclone
Bag filter
Exhaust fan

43. How to Select the Right Equipment

Equipment should be selected according to:

Raw material type
Moisture
Capacity
Particle size
Product type
Granule diameter
Factory space
Energy availability

For example, a factory processing wet chicken manure may need a stronger drying and fermentation system than a plant processing already composted material.

44. Why an Organic Fertilizer Manufacturing Line Should Be Customized

Different raw materials require different processing conditions.

A cow manure fertilizer plant may require intensive fiber crushing.

A chicken manure plant may require strong odor and moisture management.

A straw-based fertilizer plant may require efficient shredding.

A mixed organic fertilizer plant may require accurate batching and mixing.

Therefore, a customized organic fertilizer manufacturing line is generally more suitable than a standard equipment package.

45. How to Reduce Raw Material Costs

Raw materials can represent a significant part of fertilizer production costs.

Manufacturers can reduce costs by:

Using locally available waste
Building relationships with farms
Using agricultural by-products
Optimizing material ratios
Reducing transportation distance
Recycling suitable production waste

However, low-cost materials should still meet quality and safety requirements.

46. How to Improve Raw Material Utilization

A well-designed process can recycle some material streams.

For example:

Oversized Granules → Crushing → Recycling

Suitable Fines → Mixing → Re-Granulation

This reduces waste and improves overall material yield.

The recycling ratio should be controlled to avoid negatively affecting granulation or product quality.

47. Raw Material Storage Requirements

Different materials have different storage requirements.

Manure

Should be stored in a controlled area to manage moisture and odor.

Straw

Should be protected from rain and excessive humidity.

Sawdust

Should be stored in a dry, clean environment.

Mineral Additives

Should be kept dry to prevent caking.

Proper storage helps maintain stable production.

48. Common Raw Material Problems

Excessive Moisture

Can increase drying costs and cause poor granulation.

Too Much Fiber

Can reduce granulation efficiency.

Too Many Impurities

Can damage equipment.

Unbalanced Nutrients

Can result in a poor fertilizer formula.

Inconsistent Supply

Can make production unstable.

Raw material management is therefore as important as equipment selection.

49. RICHI Organic Fertilizer Manufacturing Solutions

RICHI Manufacture can design customized organic fertilizer manufacturing systems for customers processing different raw materials.

Potential feedstocks include:

Cow manure
Chicken manure
Pig manure
Sheep manure
Poultry litter
Straw
Rice husk
Agricultural residues
Food-processing by-products

The production system can be configured with:

Composting equipment
Crushers
Dryers
Mixers
Granulators
Coolers
Screening machines
Coating machines
Packaging machines
Dust collection systems
Automatic control systems

RICHI can also provide turnkey engineering services covering process design, equipment manufacturing, transportation, installation and commissioning, operator training, spare-parts support, and technical assistance.

The final system can be customized according to raw material characteristics, production capacity, fertilizer formula, factory layout, and automation requirements.

50. How to Build a Complete Organic Fertilizer Factory

A complete factory development process can be organized into several steps.

Step 1: Identify Local Raw Materials

Determine which manure, crop residues, and organic wastes are available.

Step 2: Analyze the Materials

Test nutrient content, moisture, organic matter, and impurities.

Step 3: Develop the Formula

Determine the required material ratios and nutrient profile.

Step 4: Select the Production Process

Choose composting, crushing, mixing, granulation, drying, and finishing technologies.

Step 5: Determine Capacity

Estimate production based on raw material availability and market demand.

Step 6: Design the Factory

Plan material flow, storage, production, packaging, and warehouse areas.

Step 7: Select Equipment

Match each machine to the required capacity.

Step 8: Install and Commission

Connect and test the complete production system.

Step 9: Train Operators

Teach personnel production procedures, maintenance, and safety.

Step 10: Establish Quality Control

Create standards for raw materials and finished fertilizer.

51. The Importance of Local Material Availability

A fertilizer factory should ideally be located near major sources of organic raw materials.

For example:

Cattle farms for cow manure
Poultry farms for chicken manure
Pig farms for pig manure
Rice mills for rice husks
Sawmills for sawdust
Grain-processing plants for agricultural residues

Shorter transportation distances can significantly reduce logistics costs.

52. Combining Multiple Materials

Using multiple raw materials can provide several advantages.

A mixture can balance:

Moisture
Carbon
Nitrogen
Fiber
Nutrient content
Granulation properties

For example, wet manure can be combined with dry straw or sawdust.

However, the formula should be based on actual material analysis rather than assumptions.

53. Materials for Different Organic Fertilizer Products

Manure-Based Fertilizer

Main materials:

Cow manure
Chicken manure
Pig manure
Sheep manure

Plant-Based Fertilizer

Main materials:

Straw
Rice husk
Crop residues
Vegetable waste

Compost-Based Fertilizer

Main material:

Mature compost

Nutrient-Enriched Organic Fertilizer

May combine:

Organic matter
Manure
Natural nutrient sources
Mineral additives

The production process can be adjusted according to the product category.

Conclusion

A wide range of materials can be used to make organic fertilizer, including cow manure, chicken manure, pig manure, sheep manure, poultry litter, crop straw, rice husks, corn stalks, sawdust, vegetable waste, fruit residues, food-processing by-products, compost, and other biodegradable organic materials.

The key is not simply to find available organic waste but to understand its characteristics. Moisture, nutrient content, carbon-to-nitrogen ratio, particle size, fiber structure, and impurities all influence the production process.

A typical commercial process is:

Raw Material Selection → Testing → Cleaning → Formula Adjustment → Composting → Crushing → Screening → Batching → Mixing → Granulation → Drying → Cooling → Screening → Coating → Packaging

A complete organic fertilizer manufacturing line can integrate these processes and provide more consistent production than purchasing unrelated individual machines. Equipment such as compost turners, crushers, mixers, granulators, dryers, coolers, screening machines, coating machines, packaging machines, and dust collectors can be configured according to the actual raw materials and required capacity.

For manufacturers, the most economical raw materials are often those available locally, such as livestock manure, poultry litter, crop residues, rice husks, or sawdust. However, low purchase cost alone should not determine material selection. Transportation, moisture, nutrient content, processing requirements, and seasonal availability should also be considered.

RICHI can provide customized organic fertilizer production solutions based on different raw materials and production requirements. From raw material preparation and composting to granulation, drying, cooling, screening, coating, and packaging, the complete system can be designed as an integrated project.

Ultimately, successful organic fertilizer manufacturing depends on good raw material selection, scientific formulation, effective composting, accurate processing, suitable equipment, and consistent quality control. By converting agricultural and livestock waste into stable, marketable fertilizer products, manufacturers can create commercial value while contributing to more efficient organic waste recycling and sustainable agriculture.