Nitrates are derivatives of nitric acid (HNO3) reactions. These substances in small doses are present in any living organism, be it plants or animals. When it enters the body, nitric acid interacts with metals, salts, oxides and hydroxides, resulting in the formation of substances that are called nitrates.Nitrates play a key role in the life of plants. First of all, they are an indispensable element for the synthesis of protein molecules. As a result of biochemical processes, nitrates are converted into ammonia, which is involved in the formation of chlorophyll - a substance without which photosynthesis is impossible, and therefore plant nutrition. Thus, without nitrates, the plant will simply die.