Which nutrient is primarily responsible for plant growth and development?

Nitrogen is a crucial nutrient for plant growth and development due to its pivotal role in several key physiological processes. It is a fundamental component of amino acids, which are the building blocks of proteins. Proteins are essential for the structure and function of plant cells, thus influencing growth and development. Additionally, nitrogen is a vital part of chlorophyll, the green pigment in plants that facilitates photosynthesis. Through photosynthesis, plants convert light energy into chemical energy, enabling them to produce food and grow.

Furthermore, nitrogen is involved in the synthesis of nucleic acids, which are essential for genetic material and cell division. With an adequate supply of nitrogen, plants demonstrate vigorous growth, healthy foliage, and improved overall vitality.

While phosphorus supports root development and energy transfer, and potassium aids in water regulation and enzyme activation, nitrogen has a more direct impact on vegetative growth and green foliage, making it fundamental to the growth stage of plant development. Therefore, nitrogen is primarily responsible for promoting the overall growth and developmental process in plants.