Agronomy Degree Practice Exam

Hydrated lime and burnt lime are not typically used as often due to which problematic attribute?

1. They are both caustic to skin

2. They do not impact soil pH

3. They are always too coarse

4. They cause the soil to darken in color

The correct answer is: They are both caustic to skin

Hydrated lime and burnt lime are indeed caustic materials, which means they can cause skin irritation and damage upon contact. This property poses significant safety risks during handling and application. Workers dealing with these substances must take extra precautions, such as wearing protective clothing and equipment, to prevent injuries. The concerns related to their causticity lead to hesitancy in their widespread use, as safety protocols can complicate application processes and increase the cost and time required for lime applications. Therefore, while they are effective for adjusting soil pH and providing calcium, the potential hazards associated with their caustic nature limit their popularity in certain agronomic situations, especially when safer alternatives are available.