Why do lack of nitrate cause reduced growth?

Lack of nitrate can lead to reduced growth in plants because nitrates are a primary source of nitrogen, an essential nutrient for synthesizing amino acids, proteins, and nucleic acids. Without sufficient nitrogen, plants cannot effectively produce chlorophyll, which is crucial for photosynthesis, resulting in decreased energy production. This deficiency ultimately hampers overall growth, development, and the ability to produce fruits and seeds. Additionally, a lack of nitrogen can impair the plant's ability to absorb other nutrients, further stunting growth.