Development of a No-till Seeder with a Chisel at Each Row

—Performance of the Seeder for Soybean Seeding after Harvesting Wheat on Upland Paddy—

Abstract

We developed a no-till soybean chisel seeder for attachment to tractors. Chisels were modified to a boot shape to avoid straw entanglement and placed in a zig-zag pattern. The machine first digs a drainage furrow 100 to 150mm deep in each row. To reduce the influence of soil mass on sowing and emergence, seeds are sown 50mm laterally from the furrow. We also refined a commercial soil coverer. Field experiments showed that the seeder was efficient in fields with a wheat straw length of 130mm or less and had a sowing accuracy and emergence rate comparable to those of commercial seeders. The tractor should be at least 2t and 30 to 40kW for 5-rows seeding.