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  2. Disc harrow - Wikipedia

    en.wikipedia.org/wiki/Disc_harrow

    Primary heavy duty disc harrows of 265 to 1,000 pounds (120 to 454 kg) per disc are mainly used to break up virgin land, to chop material/residue, and to incorporate it into the top soil. Lighter secondary disc harrows help completely incorporate residue left by a primary disc harrow, eliminate clumps, and loosen the remaining packed soil.

  3. Spring-tooth harrow - Wikipedia

    en.wikipedia.org/wiki/Spring-tooth_harrow

    Harrows, whether spring tooth, spike tooth or disc harrows can have a drag connection or have a 3 point mounting. A drag harrow is pulled and cannot be backed up. Three point implements can be raised and lowered hydraulicly and maneuvered more easily. A spring-tooth harrow is a type of harrow, and specifically a type of tine harrow. It uses ...

  4. 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 A drag harrow, a type of spring-tooth harrow, is a largely outdated type of soil cultivation implement that is used to smooth the ground as well as loosen it after it has been plowed and packed.

  5. No-till farming - Wikipedia

    en.wikipedia.org/wiki/No-till_farming

    No-till farming (also known as zero tillage or direct drilling) is an agricultural technique for growing crops or pasture without disturbing the soil through tillage.No-till farming decreases the amount of soil erosion tillage causes in certain soils, especially in sandy and dry soils on sloping terrain.

  6. Disc cutter - Wikipedia

    en.wikipedia.org/wiki/Disc_cutter

    Some discs used for cutting ceramic tile or stone are made from a solid disc with an edge coated with diamond grit. The most common size for these cutting wheels is 4 + 1 ⁄ 2 inches in diameter; however they can range from 2 to 16 inches in diameter with a thickness range from .045 in. to .125 in. Type 1 discs are flat, and type 27 discs have ...

  7. List of John Deere tractors - Wikipedia

    en.wikipedia.org/wiki/List_of_John_Deere_tractors

    Three new diesel compacts came to light in 1986; these were the 16 hp (12 kW) 655, 20 hp (15 kW) 755, 24 hp (18 kW) 855 and 900HC. The 900HC was offset like the 2-cylinder M, and was for niche markets. The 655, 755, and 855 all had a hydrostatic drive transmission. The 2355, 2555, 2755, and 2955 were featured as price fighter (economy) tractors ...