What are the chemical elements needed in large quantities for plant growth known as?

The term for the chemical elements required in large quantities for plant growth is macronutrients. These essential nutrients are fundamental to various physiological functions within the plant and are typically required in larger amounts compared to other nutrients. Key macronutrients include nitrogen, phosphorus, and potassium, which play vital roles in processes such as photosynthesis, energy transfer, and protein synthesis.

In contrast, micronutrients and trace elements refer to nutrients that plants need in much smaller amounts. While they are also crucial for plant health, they are not classified as macronutrients. Secondary nutrients are sometimes required in moderate amounts, such as calcium, magnesium, and sulfur, but they still do not meet the same large quantity requirement that characterizes macronutrients. Understanding the distinction among these categories is essential for effective plant nutrition and landscape management.