Precision VRI Savings Calculator
Use this tool to calculate the gains that you could potentially achieve each season with Precision VRI installed on one of your irrigators
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To get started, enter the address of your farm
This calculator gives a rough guide based on the inputs entered. It will give an idea of returns you may expect from installing Precision VRI on your irrigator, but does not take costs or variables that may occur as a result of the increased production into account. The accuracy or completeness of these calculations is not guaranteed nor is its applicability to differing individual farm circumstances. The calculator has been created using assumptions based on New Zealand farming conditions, caution should be applied if using the calculator in other countries. We reserve the right to alter this calculator and its algorithms at any time without notice.
Enter your name and email address, and we'll send you a link so you can continue your calculator session at any time.
Select Metric for metres, kg, litres; select US Imperial for feet, pounds, gallons.
Farm + Irrigator Details
This tool provides saving estimates for one irrigator only. To use this tool for other irrigators, click the 'start over' button at the bottom of this page.
Primary type of farm
Type of irrigator
Irrigator return time
Total irrigated area
Number of pivot / lateral changes per cycle
Average number of running hours per season
Drag the blue area over the location of your irrigator. Change the shape to fit the area that your irrigator covers by dragging the round handles. You can delete a handle by right-clicking it.
Labour cost per hour for re-nozzling
How long does it take to re-nozzle your irrigator?
Pumping efficiency is not taken into account in calculations done with this tool. Many factors determine pump efficiency, such as how many nozzles are being controlled at a time and whether a Variable Speed Drive (VSD) is installed on the pump.
What is the flowrate of your pump?
How much do you pay for water on average?
What is the power rating of your pump?
What is the average unit cost of electricity for your pump?
Dairy Farm Details
Enter values for each question, if you are unsure make an educated guess.
Average days in milk per cow per year
Average yearly production per cow (MS)
Total number of lame cows per year
Average reduction in production per lame cow
Reduction in lame cows per year if wet areas kept dry
Total heathcare costs for lame cows in a season (including your time)
Reduction in number of cows culled due to lameness per year
Cost of cow replacement
This tool will only make use of areas which are inside of the irrigator coverage area.
Click the '+ track' button to add tracks or streams.
Click a track in the table below to make adjustments, or the '+ track' button to add tracks or streams.
|Track Name||Area||Current Spend||Estimated Savings|
|No tracks have been added|
Define which crops you grow and the value of each crop in the table below. The value can be per ton of dry matter or any other measure.
For example, to calculate the value per ton of dairy pasture, you may use something like the following formula:
|milk solids||dry matter||dairy payout||kg per ton||value of dairy pasture|
|No crop types have been added|
Dry + Wet Areas
Click the '+ dry area' button to the right to draw areas where you would like to apply more irrigation. Click the '+ wet area' button to draw areas where you would like to apply less irrigation. Click an existing area to edit the shape, or double click to set properties.
Dry + Wet Areas
Click the '+ dry area' button to the right to draw areas where you would like to apply more irrigation. Click the '+ wet area' button to add areas where you would like to apply less irrigation.
|Area Name||Crop Type||Area||Irrigation||Yield Difference|
|No variable areas have been added|