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A disk plow is a farm machine that replaces the moldboard plow bottom with one or more concave steel discs. This design is particularly effective in sticky or hard, dry soils.1

Disk plows typically feature three or more individually mounted concave discs that are angled backward to achieve maximum depth. They offer an advantage over moldboard plows in situations where the soil doesn't scour easily, in fields with a plow sole, in dry, hard ground, or in peat soils. The discs reduce friction by creating a rolling action instead of a sliding one. These plows are often equipped with a scraper to help break up the furrow slice.2

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