![]() While other tasks may seem more pressing, early installation of sensors is critical to ensure their proper operation during the later critical growth phases. Therefore, the net savings from using sensors for a 130-acre center pivot could range from $400 to $1,700 per year. A typical range for sensor prices is as low as $175 for systems with NRD cost share up to $1,500 per year for subscription-based services. From this total we would have to subtract the cost of the sensors. With 130 acres irrigated the total annual savings from using sensors would be $1,899.30. The difference in cost between the two scenarios is $14.61 per acre. Over the course of a year, this would result in a total annual cost of $113.97 per acre ( Figure 2). The total cost would be $19.00 per acre inch per acre. If using sensors resulted in saving 2 inches of water, the same operating costs of $7.31 per acre would apply, but ownership costs would change to $11.68 per inch since we are spreading the costs over fewer inches of water. Therefore, the 8 inches of water applied during the year would result in a total annual cost of $128.58 per acre ( Figure 1). ![]() Total cost would be $16.07 per inch of water applied per acre. When we plug these numbers into the IrrigateCost app, we end up with operating costs of $7.31 per inch of water applied and ownership costs of $8.76 per inch, assuming an average application of 8 inches per year. ![]()
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