Certified Crop Advisor Practice Exam

Which nutrient is often associated with promoting vegetative growth in plants?

1. Phosphorus

2. Nitrogen

3. Potassium

4. Calcium

The correct answer is: Nitrogen

Nitrogen is a key nutrient that plays a critical role in promoting vegetative growth in plants. It is a major component of chlorophyll, the molecule responsible for photosynthesis, and is essential for the synthesis of proteins, nucleic acids, and various other cellular components. The availability of nitrogen directly influences the growth and overall development of plant tissue, leading to increased leaf and stem growth, which are crucial during the vegetative stage of a plant's life cycle. In contrast, other nutrients listed have different primary functions. For instance, phosphorus is primarily associated with energy transfer and the development of roots and flowers, while potassium helps regulate various physiological processes including water uptake and disease resistance. Calcium primarily contributes to cell wall structure and stability and is essential for root and shoot development, but it does not directly promote vigorous vegetative growth to the same extent as nitrogen.