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  2. Disc harrow - Wikipedia

    en.wikipedia.org/wiki/Disc_harrow

    A disc harrow is the preferred method of incorporating both agricultural lime (either dolomitic or calcitic lime) and agricultural gypsum, and disc harrowing achieves a 50/50 mix with the soil when set correctly, thereby reducing acid saturation in the top soil and so promoting strong, healthy root development.

  3. Harrow (tool) - Wikipedia

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

    The disk harrow is used first to slice up the large clods left by the mould-board plough, followed by the spring-tooth harrow. To save time and fuel they may be pulled by one tractor; the disk hitched to the tractor, and the spring-tooth hitched to, and directly behind, the disk. The result is a smooth field with powdery dirt at the surface.

  4. Disc harrows - Wikipedia

    en.wikipedia.org/?title=Disc_harrows&redirect=no

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  5. List of agricultural machinery - Wikipedia

    en.wikipedia.org/wiki/List_of_agricultural_machinery

    Agricultural equipment is any kind of machinery used on a farm to help with farming.The best-known example of this kind is the tractor.. From left to right: John Deere 7800 tractor with Houle slurry trailer, Case IH combine harvester, New Holland FX 25 forage harvester with corn head.

  6. 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 ...

  7. Wang Zhen (inventor) - Wikipedia

    en.wikipedia.org/wiki/Wang_Zhen_(inventor)

    An illustration of furnace bellows operated by waterwheels, from the Nong Shu, by Wang Zhen, 1313, during the Mongol Yuan dynasty.. The Chinese during the Han dynasty (202 BC – AD 220) were the first to apply hydraulic power (i.e. a waterwheel) in working the inflatable bellows of the blast furnace in creating cast iron.

  8. China–Indonesia relations - Wikipedia

    en.wikipedia.org/wiki/ChinaIndonesia_relations

    President Sukarno of Indonesia greeted at Beijing airport by Mao Zedong flocked by Indonesian-Chinese flags Mao Zedong and Sukarno. After the Indonesia's independence in 1945 and the acknowledgement of its sovereignty from the Dutch in 1949, Indonesia established political relations with China (previously with Republic of China and later with People's Republic of China) in 1950. [21]

  9. Two-wheel tractor - Wikipedia

    en.wikipedia.org/wiki/Two-wheel_tractor

    The unique long-handled "Thai" type two-wheel tractor was developed in the late 1950s by M.R. Debriddhi Devakul (M.R. stands for Mom Rajawong, meaning that his great-grandfather was the King of Thailand, and that he could be properly addressed as "Prince"), head of the Engineering Division of the Thai Rice Department, of the Thai Ministry of ...