Scheduling Codes are used to ...

• A. Water Allotments
• B. Scheduling Codes
• C. Cycle & Soak
• D. Matched Precipitation Rate

Answer: (B)

Scheduling codes define when irrigation events happen and how often zones run, providing the timing framework for an irrigation program. They act as labels or rules that tell the controller which days, start times, and frequencies to use, and in what sequence zones should operate. This is why they’re the best answer: scheduling codes govern the timing and organization of irrigation, not the volume of water delivered, the technique of applying the water, or the rate matching to soil infiltration.

Water allotments relate to overall water budgets or volumes allocated to zones or programs, which is a separate concept. Cycle & soak is a method of spreading a single run into multiple short cycles to reduce runoff and improve infiltration. Matched precipitation rate concerns delivering a uniform amount of water across zones to match the landscape’s needs. Scheduling codes themselves set the timing and grouping of these actions, which is why they’re the correct focus here.