Creating A Prescription With VRAFY

Learn how to create and download your own variable rate fertilizer prescriptions using VRAFY in five steps. In our example, we will build soil K to 200ppm with a dry fertilizer product. The process is fundamentally the same or very similar for all of our formulas.

Vrafy

Tip! Creating your own prescriptions is available for VRAFY Plus and VRAFY Complete service level customers. If you need assistance along the way, feel free to contact us at 507-800-0898 or schedule time with one of our experts here: [Schedule Meeting](https://calendly.com/d/cpc4-cvw-k7q)

Note: Wording and options may change from time to time as adjustments are made to improve or clarify, but the general layout and functionality will follow what is in this article.

Step 1: Launch The Formula Creation Tool

Start by bringing up a Soil Sample Results Layer in Field Analyzer in the Operations Center.

Tip! If you don't have any Soil Results yet, but want to run your own prescriptions based on yield only, reach out to the VRAFY Team and ask them to send a special Yield Layer to your Operations Center with the Create Prescription link in it.

Bring up a Soil Sampling Layer. For our Example, we will be bringing up a Soil K layer.

Click here

Click "Area"

Click on "Create Formula Rx" below the map area to launch the VRAFY Prescription Creation Tool

Step 2: Select Your Formula

Select the Formula Group containing the Formula you want to run.

For our example, we will utilize the 04 Soils Only - P&K Build group as we won't be utilizing a yield map.

In the list, we will look for the formula titled: Target PPM K Build - Potash

Step 2A: Adjust The Target PPM For The Formula

Many of our formulas include user-adjustable variables. These variables will be found under the green "Vars" button. These will allow you to adjust things like the target PPM, increase or decrease the yield factor, or tell the formula if you harvested grain only or also harvested the straw. The

The default value in this formula is 150 ppm. When a default value is present, the target value is greyed out. We need to tell the formula to use a custom flat rate by clicking on the "Flat" box.

Then click in the "Value/Seasons" entry field and now we can adjust our target. For our example, we will adjust the target from 150 to 200.

Tip! Some layers, such as the Soil Sample and Yield layers, have a season listed. When these are shown, you can select which crop seasons you want to run the formula against. If you select more than one crop season of the same crop, the formula will use an average of those years when calculating crop removal. For example, if you select 2024 and 2022 Corn Harvest, the formula will use an average of the two when calculating crop removal. If you want to create a prescription to replace the nutrients from both seasons combined, select both seasons and set the Yield Adjustment % to 200.

Once your variables are set on the Vars screen, click on the green "Done" button.

Step 2B (Optional): Adjust Prescription Preferences, Such As Minimum and Average Rates

See this Knowledgebase Article to Learn More about Adjusting the Preferences to customize the results to your operation: [Knowledebase Link](https://scribehow.com/shared/Editing_Prescription_Preferences__sNEilZ-AQ7aPEc8c8brlGg?referrer=documents)

Step 3: Run Your Formula to create the Prescription

Select the formula by clicking in the box to the left of the formula name you had selected earlier

Click on the green "Create Rx for 1 formula" button at the bottom left of the available formulas listing. The prescription will be generated in the area below the button and you will need to scroll down to view the preview of it.

Tip! Feel free to select multiple formulas and run them simultaneously by following the process above for each formula desired.

Once you click on "Create Rx for 1 Formula," the formula runs, and your prescription is automatically sent to the Operations Center to be viewed in Field Analyzer and added to your Files Page.

Step 4 (Optional): Preview the Prescription and Download Report

In the Prescription preview window, you will see a map of the different product volumes on the left side of the screen. Click on "Click to load zone information" in the middle of the screen to see the details for each product application zone and the legend corresponding to the color in the map.

The zone information table will list each zone's area/size, product rate, soil analysis test value (as applicable), and total product. In our example below, note the cost per acre and total cost are also loaded since we had entered a cost value for the product in our preferences earlier when executing the formula to create the prescription. Grand totals for the prescription on the entire field are at the bottom of the table.

To download a .pdf report of the prescription, Click on the "Report" box below the map preview. Remember: the prescription map, with totals, was already sent to your Operations Center, so a report is unnecessary unless you would like a second copy or a record of estimated product costs.

Tip! Feel free to go back up and rerun the prescription as many times as you would like if you want to make changes to your Variables or Preferences before you leave the window.

After creating the prescription, return to the Operations Center and refresh your web browser (shown in Chrome here) to see your Prescription in Field Analyzer.

If your prescription isn't automatically loaded after you refresh, select it from the dropdown list of available layers in Field Analyzer.

After the prescription preview loads, the total product needed is available in the summary area below the map.

Step 5: Downloading The Prescription Or Sending It To Equipment

Check Out this Knowledgebase Article on How to Download the File, Share It with a Partner, or Send it to your Equipment [Knowledgebase Link](https://knowledgebase.vrafy.com/?_gl=1*1els68s*_ga*OTM2NjkxOTI0LjE3Mjk1NDQwNDM.*_ga_6BCSLPNG24*MTczMDM3ODY4OC4xOS4wLjE3MzAzNzg2ODguMC4wLjA.#WpViewer%2526Sending%2520Prescription%2520Files%2520to%2520Trusted%2520Partners%2520or%2520Displays%252644)