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2. Drag harrow - Wikipedia

   en.wikipedia.org/wiki/Drag_harrow

   A 4-foot drag harrow A larger, 12 foot drag harrow simply uses three four foot sections that are connected. A drag harrow, a type of spring-tooth harrow, is a largely outdated type of soil cultivation implement that is used to smooth the ground as well as loosen it after it has been plowed and packed.

3. Harrow (tool) - Wikipedia

   en.wikipedia.org/wiki/Harrow_(tool)

   The fourth is a chain disk harrow. Disks attached to chains are pulled at an angle over the ground. These harrows move rapidly across the surface. The chain and disk rotate to stay clean while breaking up the top surface to about 1 inch (3 cm) deep. A smooth seedbed is prepared for planting with one pass. Harrowing with tractor and disk harrow ...

4. Spring-tooth harrow - Wikipedia

   en.wikipedia.org/wiki/Spring-tooth_harrow

   A spring-tooth harrow is a type of harrow, and specifically a type of tine harrow. It uses many flexible iron teeth mounted in rows to loosen the soil before planting. A drag harrow more specifically refers to a largely outdated type of soil cultivation implement that is used to smooth the ground as well as loosen it after it has been plowed ...

5. Stale seed bed - Wikipedia

   en.wikipedia.org/wiki/Stale_seed_bed

   Either duckfoot sweeps and blade sweeps (beet knife) can be used, but must be set for a very shallow depth of cut. The other implement that can be used is a chain harrow or drag harrow. Chain Harrows at Okle Clifford - geograph.org.uk - 1274415; Thermal elimination of the small weed seedlings is done with a flame weeder. This method has the ...

6. Combine harvester - Wikipedia

   en.wikipedia.org/wiki/Combine_harvester

   Dragging chains to reduce static electricity was one method employed for preventing harvester fires, but it is not yet clear what if any role static electricity plays in causing harvester fires. The application of appropriate synthetic greases will reduce the friction experienced at crucial points (i.e., chains, sprockets and gear boxes ...

7. File:12 foot spring-tooth drag harrow.jpg - Wikipedia

   en.wikipedia.org/wiki/File:12_foot_spring-tooth...

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