Soil moisture sensors are used primarily for what purpose?

• A. To analyze soil texture
• B. To determine water needs for plants
• C. To measure soil pH levels
• D. To enhance soil structure

Answer: (B)

Soil moisture sensors are primarily designed to determine the water needs for plants. These devices measure the volumetric water content in the soil, allowing landscapers and gardeners to monitor when and how much water should be applied to ensure that plants receive the appropriate amount of moisture for healthy growth. By using these sensors, one can avoid overwatering or underwatering, which can lead to plant stress or waste of water resources.

The ability to optimize irrigation based on actual soil moisture levels helps in making informed decisions, promoting efficient water use, and maintaining plant health. In contrast, analyzing soil texture, measuring soil pH levels, and enhancing soil structure are different aspects of soil management and agronomy that do not directly relate to the primary function of soil moisture sensors. These activities are important for overall soil health but do not involve the real-time monitoring and management of water needs that soil moisture sensors provide.