Mo. Rev. Stat. § 262.805
Purchasers of real property within one mile of areas zoned for agriculture or used for farming purposes as defined by the farmland protection act contained in sections 262.800 to 262.810 shall be presumed to have notice of such agriculture zoning or use for farming purposes. Agricultural zoned land or land used for farming purposes may be used for commercial or hobby operations that may include but are* not limited to the following: breeding and rearing of livestock, weaning and treating of livestock, raising and harvesting of crops, application of fertilizers and pesticides, dust, noise, odors, gunfire, burning, extended hours of operation, seasonal operations, timber operations, cultivated and idle land. Agriculture operations typically consist of open and timbered spaces that are private property and are not open to the public or to public access. Agriculture operations contain many hazards, including but not limited to, open water (including ponds, streams, ditches), open pits, brush, brush piles, snakes, untamed and unpredictable animals, electric and barbed fences, storage building and structure, tractors and equipment, and hidden obstacles. Children and adults are not permitted to roam, play or trespass on farm or agriculture property. These activities and conditions may already be regulated by state, federal or local law and nothing herein is meant to exempt such property from any such laws or regulations but is simply notification to purchasers that living in a rural environment does not mean you will live in an environment free of conditions you find irritating, dangerous, or unpleasant.
§ 262.805, RSMo