The number one produced chemical in the United States is fertilizer ammonia.
What is a fertilizer?
A fertilizer is any natural or synthetic material that is applied to soil or plant tissues to supply plant nutrients. Fertilizers can be distinguished from liming materials or other non-nutritional soil amendments. There are numerous fertilizer sources, both natural and man-made. Fertilization in most modern agricultural practices focuses on three main macronutrients: nitrogen (N), phosphorus (P), and potassium (K), with the occasional addition of micronutrient supplements such as rock dust. Farmers apply these fertilizers in a variety of ways, including using large agricultural equipment or hand-tool methods, and applying them dry, pelletized, or liquid.
Hence, the number one produced chemical in the United States is fertilizer ammonia.
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