An organic fertilizer turner, also known as a compost turner or composting machine, is a piece of equipment used to mix and aerate organic materials during the composting process. The turner can help to speed up the composting process by providing oxygen to microorganisms, which break down the organic matter and produce compost. There are several types of organic fertilizer turners available, including manual turners, semi-automatic turners, and fully automatic turners. They can be used in small-scale or large-scale organic fertilizer production.