The impact of calcium nitrate on crop growth and development
It is used in crops as a source of nitrogen and calcium. Calcium nitrate is highly soluble in water and easily absorbed by plant roots. Furthermore, it does not acidify soils because its ions cannot be significantly hydrolyzed.
Its mixture with fertilizers that contain phosphorus or sulfate should be avoided, to avoid the formation of insoluble salts. Due to its hygroscopicity, it should be stored in a dry and cool environment.
Its use has an advantage over the use of ammonium nitrate as a fertilizer. Although the latter compound provides nitrogen to plants, it interferes with calcium uptake, which could lead to calcium deficiency in plants.
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Calcium contributes to the maintenance of the structure of the cell wall of plants. In the presence of a calcium deficiency, the forming tissues of plants, such as root tips, young leaves, and shoot tips, often show distorted growth.
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Reduction of ammonium: calcium nitrate reduces the accumulation of volatile fatty acids and phenolic compounds, phytotoxics that accumulate due to the decomposition of soybean crop residues. In addition, there is a tendency for calcium nitrate to decrease the ammonium concentration in the soil, which increases the hydrogen buffering capacity.
