(a) Every municipality shall encourage the continuity, development and viability of agricultural operations within its jurisdiction. Every municipality that defines or prohibits a public nuisance shall exclude from the definition of such nuisance any agricultural operation conducted in accordance with normal agricultural operations so long as the agricultural operation does not have a direct adverse effect on the public health and safety.

(b) Direct commercial sales of agricultural commodities upon property owned and operated by a landowner who produces not less than 50% of the commodities sold shall be authorized, notwithstanding municipal ordinance, public nuisance or zoning prohibitions. Such direct sales shall be authorized without regard to the 50% limitation under circumstances of crop failure due to reasons beyond the control of the landowner.