After harvesting a crop, farmers are left with straw, stalks, leaves and other plant material. These residues are often treated as waste. But agricultural scientists increasingly encourage farmers to recycle them through composting, mulching, incorporation and other practices that can return nutrients and organic matter to the soil.
ICAR-MGIFRI’s 2026 farmer campaign in Bihar promoted crop residue recycling alongside soil testing, balanced fertilisation, green manuring, vermicomposting and conservation agriculture. The campaign reached 6,854 farmers across four districts, showing how residue management is being taken directly to farming communities.
The purpose is not simply to dispose of farm waste. Residues can become a source of organic matter and nutrients when managed correctly. Farmers can use different methods depending on the crop, available machinery, labour, soil condition and time available before the next crop.
What can farmers do with residues?
One option is to leave suitable residues on the soil surface as mulch. Mulching can protect soil from direct sunlight, reduce moisture loss and help moderate soil temperature. Plant material also breaks down over time, adding organic matter as decomposition progresses.
Farmers can also incorporate residues into the soil when they have enough time before planting the next crop. Decomposition is faster when residues are managed properly, but fresh material with a high carbon content can temporarily affect nutrient availability during breakdown.
Composting is another option, particularly when farmers have crop residues along with animal dung and other organic materials. Proper composting allows plant material to decompose into a more stable product that can later be applied to fields as an organic soil amendment.
Vermicomposting can also convert suitable plant residues and organic materials into a nutrient-rich amendment using earthworms. ICAR-MGIFRI included vermicomposting and residue recycling among the practices promoted during its 2026 soil-health campaign in Bihar.
Can recycling reduce farm costs?
Recycling residues can reduce the need to remove or dispose of plant material, but the savings depend on the method used. Farmers using machinery may face additional costs for chopping, incorporation or transport. Labour requirements can also increase when residues are handled manually.
The possible benefit comes from retaining nutrients and organic matter within the farm system. Instead of removing all plant material, farmers can return part of it to the soil. This can support soil structure and moisture management over time, although results depend on residue type and soil conditions.
ICAR-CIRCOT has also promoted crop-residue management in villages around Nagpur. Its 2026 programmes highlighted composting and biochar, along with technologies for converting cotton by-products into pellets and briquettes for additional uses.
This shows that residue recycling does not have to mean only putting material back into the field. Some residues can become compost, biochar, fuel products or other useful materials when suitable equipment and markets are available.
What about burning residues?
Burning is a quick way to clear a field, but it removes organic material and releases smoke and gases. ICAR scientists working with farmers in Bihar specifically encouraged them to avoid residue burning and instead use practices such as incorporation, composting, mulching and vermicomposting.
Farmers should also avoid assuming that every residue can be handled in exactly the same way. Thick stalks, straw, leaves and crop-processing waste have different characteristics. The best method depends on how quickly the material breaks down and when the next crop needs to be planted.
Timing is especially important. If residues are incorporated immediately before sowing, incomplete decomposition can interfere with field preparation or nutrient availability. Farmers should therefore plan residue management after considering the next crop’s planting date and the time available for decomposition.
Machinery can make residue management easier on larger farms. Choppers, shredders, mulchers and residue-management implements can reduce the labour needed to handle large quantities. Small farmers can consider custom hiring or shared machinery instead of purchasing equipment that may remain unused for much of the year.
Can residues improve soil health?
Soil health depends on organic matter, nutrients, biological activity, water movement and other factors. Adding well-managed organic residues can contribute carbon to the soil and support biological processes involved in decomposition and nutrient cycling.
ICAR-CIRCOT’s 2026 farmer programme in Maharashtra promoted crop residue management along with compost and biochar to improve soil organic matter. The programme shows that residue management is being linked with broader soil-health practices rather than treated as a standalone waste problem.
Farmers should still combine residue recycling with soil testing and balanced fertiliser use. Crop residues cannot supply every nutrient required by a crop, and their nutrient content varies. A farmer should not stop recommended fertilisers simply because residues are being returned to the field.
The most useful approach is to treat crop residues as a farm resource. Some material can remain as mulch, some can be composted and some can be processed into other products. The choice should depend on local conditions, available resources and the farmer’s production plan.
For farmers, the goal is simple: reduce unnecessary waste while keeping useful nutrients and organic matter within the farming system. Crop-residue recycling will not produce the same result everywhere, but when matched with the right crop and method, it can turn leftover biomass into another farm input.