Thorough cooking is even more effective because most pathogens cannot survive high temperatures. To further reduce the risk of diseases, manure should be applied at least 60 days before harvesting any vegetables that will be eaten without cooking. The best procedure is to apply manure in the fall so time and cold temperatures can destroy potential pathogens. Do not apply manure after the garden is planted. Use well-composted manure rather than fresh.
Fresh manure has the potential to burn plants.
For perennial crops such as asparagus and rhubarb, fertilize after the harvest season is completed. Avoid the use of cat, dog, or pig manures in gardens or compost piles. Some of the parasites found in these manures may survive and remain infectious for people. Some people are especially susceptible to food-borne illnesses. These people should use good food handling practices or avoid eating uncooked vegetables from manured gardens.