Tractor-Mounted Stubble Slasher / Reaper

A tractor-mounted stubble slasher cuts post-combine paddy or wheat stubble close to the soil so that the field can be tilled or directly sown without burning. In the Happy Seeder family of implements, the slasher is combined with a zero-till drill, enabling a single pass that both clears stubble and seeds the next crop.

Function

A PTO-driven straw-management unit with six to nine disc flanges rotates over the stubble row and cuts and throws the residue laterally, exposing the soil immediately ahead of the rear zero-till drill. The drill places seed and fertiliser through the cleared band, producing an established crop without prior burning or full tillage.

Design and specifications

The straw-management unit rotates at approximately 220 rpm. Happy Seeder operation requires a 45 HP and above tractor, with field capacity of 0.2-0.3 ha/hour and diesel use of 16-17 litres per hectare. As of recent CEEW data, Punjab alone operates around 13,560 Happy Seeders and 43,452 Super Seeders for crop-residue management. ICAR-IARI Pusa developed the PUSA bio-decomposer to accelerate in-situ decomposition of the cleared stubble.

Operation

The implement is mounted on the three-point linkage and operated immediately after the combine pass, while the stubble is still standing. Forward speed is matched to stubble density. The result is direct-drilled wheat behind paddy stubble or paddy behind wheat stubble, eliminating the burning practice that contributes heavily to regional winter air pollution.

Subsidy and adoption

The Government of India and the Punjab and Haryana state governments offer high subsidies on Happy Seeder, Super Seeder, mulcher and SMS attachments under crop-residue-management schemes. Bio-decomposer spray is provided alongside the implement subsidy. Adoption is concentrated in the rice-wheat belt of north-west India.

References

Happy Seeder. Wikipedia.
How Can Punjab Adopt Crop Residue Management Methods. Council on Energy, Environment and Water (CEEW).