Types of Combine Harvesters in Indian Agriculture
Combine harvesters are engineered to harvest diverse cereal and oilseed crops including wheat, paddy, soybean, maize, pulses, and mustard. Choosing the right harvester depends on farm soil conditions, farm plot size, and regional crop rotations.
- Self-Propelled Wheeled Combines: Powered by heavy-duty 75 to 110 HP diesel engines with 10 to 14 foot cutter bars; optimized for firm, dry fields in wheat, mustard, and soybean belts.
- Track-Mounted (Rubber Track) Combines: Feature crawler rubber tracks that distribute weight to operate in wet, muddy, and waterlogged paddy fields across southern and eastern India.
- Tractor-Powered Combines: Demountable harvester units mounted onto standard 50 to 60 HP agricultural tractors; preferred by custom hiring operators seeking multipurpose utility.
- Super SMS (Straw Management System): Mandatory attachment in many states that chops and spreads paddy straw uniformly across the field to enable zero-till Happy Seeder wheat planting.
Government Subsidies and Custom Hiring Model
Because combine harvesters represent substantial machinery investments, central and state governments promote Custom Hiring Centers (CHCs) and individual farmer purchases under the SMAM portal (agrimachinery.nic.in). Subsidies range according to farmer category, state guidelines, and attachment specifications.
- SMAM Scheme: Provides capital subsidies for individual farmers, farmer producer organizations, and rural youth establishing custom hiring hubs.
- Crop Residue Management (CRM) Scheme: Special assistance in northern states for machinery fitted with Super SMS and straw choppers to mitigate crop residue burning.
- Application Process: Apply online through the state agriculture engineering portal or DBT Agri Machinery portal with land records, bank details, and an approved machinery quotation.
Maintenance and Operational Guidelines
Proper operation and routine maintenance preserve threshing efficiency, lower fuel consumption, and prevent field grain loss during tight harvest windows.
- Concave and Drum Clearance: Adjust clearance according to grain size and moisture to minimize grain cracking and unthreshed seed loss.
- Cutter Bar Maintenance: Check and sharpen knife sections, align ledger plates, and grease wobble box drive mechanisms before each season.
- Air Filter and Radiator Cleaning: Blow out chaff and dust from air pre-cleaners and engine radiators multiple times daily to prevent engine overheating.
Official source
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Common questions
How does a track combine harvester differ from a wheeled combine?
A track combine uses continuous rubber crawler tracks instead of tyres, allowing it to navigate deep, muddy, and saturated paddy soils without sinking or causing severe rutting.
What is the purpose of the Super Straw Management System (Super SMS)?
Super SMS is attached to the rear of a combine harvester to shred loose paddy straw and broadcast it evenly across the field, facilitating in-situ residue management and direct wheat drilling.
Where can farmers apply for combine harvester subsidies?
Farmers can apply through the Central DBT Agriculture Mechanization portal at agrimachinery.nic.in or their respective state agriculture department portal.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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