Micronutrients are characterized by what?

Micronutrients are essential elements required by plants in smaller amounts compared to macronutrients, which are needed in larger quantities. These micronutrients, such as iron, manganese, zinc, and copper, play critical roles in various physiological functions, including enzyme activation, photosynthesis, and nutrient transport.

The term "micronutrient" specifically refers to their requirement; although they are necessary for plant health and growth, they do not need to be present in large quantities like macronutrients (nitrogen, phosphorus, and potassium). This distinction is important because deficiencies in micronutrients, even in trace amounts, can lead to significant negative effects on plant development. Understanding the role and requirements of micronutrients is crucial in nutrient management and optimizing plant health.