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- Regulated Target. This is the target at which Irrigators water and attempts to maintain soil depletion; and
- An Opportunistic Target. This target is used to generate opportunistic requests. For ponded crops, it also represents the maximum pond level prior to runoff. By default the opportunistic target is disabled and no opportunistic requirement is generated.
- A Refill Trigger - May allow better representation of irrigation scheduling for individual properties as irrigation does not commence until the forecasted soil depletion reaches the specified refill trigger
If you have an order debit system you can use an opportunistic target to generate requests which will extract water opportunistically, decreasing the depletion and thereby reducing the regulated water required to meet the lower regulated target depletion. For ponded crops, opportunistic targets also reduce the amount of rainwater rejection because runoff will occur above the regulated target pond level.
The behaviour of the first two target levels is illustrated in the following two Figures for a ponded and non ponded crop.
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