What is a primary advantage of drip irrigation compared to sprinklers?

• A. Water is delivered at the plant's root zone where it is needed
• B. Water is sprayed widely and evaporates quickly
• C. It requires more energy than sprinklers
• D. It promotes more weed growth

Answer: (A)

Delivering water directly at the plant's root zone where it's needed gives drip irrigation its main advantage. It releases small, precise amounts of water right at the base, so most of what’s applied goes to the plant and not to the surrounding soil. This minimizes losses from evaporation and runoff and keeps foliage dry, which also reduces disease risk. Because moisture is concentrated near the roots, there’s less water available for weeds, so weed growth is kept to a minimum. In contrast, sprinklers water a wide area, leading to more evaporation, runoff, and non-target moisture, which is why the other statements aren’t as favorable: drip systems usually use less energy due to lower pressure, and they don’t promote more weed growth.