Red Seal Landscape Horticulturist Practice Exam

What is a primary advantage of drenching techniques for watering plants?

1. Increased evaporation

2. Conserves water by maximizing absorption

3. Allows for rapid growth of weeds

4. Encourages surface runoff

The correct answer is: Conserves water by maximizing absorption

The primary advantage of drenching techniques for watering plants is that it conserves water by maximizing absorption. This method involves applying water directly to the root zone of the plants in a manner that ensures it penetrates deep into the soil, thereby reducing surface evaporation and runoff. By allowing water to reach the roots effectively, plants can take up moisture more efficiently, leading to healthier growth and reduced water wastage. In contrast, options that mention evaporation, rapid growth of weeds, or surface runoff highlight negative aspects that are not associated with drenching techniques. Increased evaporation would undermine the effectiveness of watering, while encouraging surface runoff leads to water loss and hampers root absorption, which is counterproductive for plant health.