Yes. Raw manure and other animal and plant material must be handled in a way that prevents water, soil and crop contamination. In order to be applied without a days-to-harvest restriction, manure must be properly composted. Crops for human consumption that have the edible portion in contact with the soil – including leafy greens – must be harvested at least 120 days after the application of uncomposted manure. Other crops for human consumption must be harvested at least 90 days following the application of raw manure.