Yes, there are regulations on the disposal of used agricultural plastics. These regulations vary by country and region but generally aim to reduce environmental impact and promote recycling. In the European Union, for example, Directive 94/62/EC on packaging and packaging waste includes provisions for the recycling of plastic waste, including agricultural plastics. In the United States, the Environmental Protection Agency (EPA) provides guidelines for managing plastic waste, and some states have specific regulations. It's crucial for farmers and agricultural businesses to comply with local laws and to seek advice from environmental agencies for proper disposal methods, which may include recycling, proper disposal in designated waste facilities, or using approved methods for on-site management.