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FS Adjuvants from GROWMARK, Inc. is designed to assist agricultural applicators with the proper tank mixing sequence of crop protection products. FS Adjuvants also captures product use rates and application information with Mix Sheets and conveniently maintains accurate Spray Logs for easy record keeping.

Following the proper mixing sequence helps users prevent product incompatibilities and can save applicators time and money by avoiding product loss and sprayer clean-out problems.

The available Weather Integration feature within the Spray Log helps applicators prevent spray drift risk by displaying weather information, including wind speed and direction, prior to spraying, assisting with documentation and compliance.

• Mix Guide: receive a recommended mixing order based on the products selected
• Mix Sheets: capture field size, spray volume, tank size and product use rates and receive rate per acre, per tank and per field for accurate documentation and compliance. Easily share to integrate with existing records.
• Spray Logs: stopwatch and notifications (every 60 minutes) allows you to conveniently record GPS location, time spent spraying and weather details. A notes section also allows for additional record keeping
• Weather Integration: provides wind speed and direction, temperature and conditions integrated with Spray Logs, helping reduce spray drift risks by capturing weather conditions prior to spraying(in-app purchase)
• Mixing Precautions: alerts users of potential tank mixing issues. Note: if an issue is not listed, please let us know through the feedback section and it will be added after review
• My Favorites: select your most-used products for easy access
• Enhanced Sharing: email, Facebook and Twitter

Included is a database of over 1,300 crop protection products from over 17 manufacturers. Mixing orders can contain up to 19 products from the following categories:
• Herbicides (includes PGRs and Defoliants)
• Fungicides (includes Bactericides)
• Insecticides (includes Miticides and IGRs)
• Adjuvants
• FoliarNutrition

Please read and follow all labels to ensure product compatibility.

What’s New

Version 5.2

Bug Fixes

Ratings and Reviews

3.7 out of 5
3 Ratings

3 Ratings

North Central Iowa ,

North central Iowa

I like this app, it allows me to check myself before I spray. I can’t always get ahold of my crop specialist in season, and this allows me to have confidence in mixing & application of my chemicals.

OldGrizzlyBear ,

Nice update

I like the iPhone 4 optimizations

Appy Dude ,



App Privacy

The developer, Precision Laboratories, Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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