Which tool is NOT mentioned for monitoring and adjustment in irrigation scheduling?

• A. Soil probes
• B. Weather-based irrigation controllers
• C. Digital moisture meters
• D. Local water authority schedules

Answer: (C)

Digital moisture meters are tools that are designed to measure the moisture content in the soil, providing valuable data for irrigation decisions. However, they are not typically mentioned specifically for monitoring and adjustment in irrigation scheduling within most standard references on irrigation management.

In contrast, soil probes are commonly used to assess soil moisture conditions, allowing landscapers to make informed decisions about when to irrigate based on direct soil moisture readings. Weather-based irrigation controllers utilize weather data such as rainfall, temperature, and humidity to automatically adjust irrigation schedules, ensuring that plants receive adequate water without over-irrigating. Local water authority schedules are also important as they often provide guidelines and scheduling recommendations that help in planning irrigation practices efficiently.

Thus, while digital moisture meters are useful tools for understanding soil conditions, they are not usually highlighted in the context of actively scheduling or adjusting irrigation practices compared to the other tools mentioned.