What chemicals can be used as fertilizers of plants and soils?

Botanicals, cultivational practices, mechanical means, and natural enemies are controls that are used in organic farming instead of chemicals. Parasites, pathogens and pests can attack organically grown edibles and ornamentals. But the inputs, methods and resources need to be animal- and plant-based, local, natural, non-genetically modified, non-synthetic and on-site in order for farming to be considered organic, not conventional.