# Field Guide

> Field Guide (iPhone/iPad app by Oklahoma State University.)

- Source: https://appshunter.io/ios/app/field-guide/id872660183 (this page in markdown: same URL + `.md`)
- Developer: [Oklahoma State University](https://appshunter.io/developer/393442180)
- Category: Education, Utilities
- Price: Free
- Age rating: 17+
- Requires: iOS 8.0 · 22 MB
- Languages: English
- Released: 2014-05-09
- Data updated: 2026-06-10
- User reviews in markdown: https://appshunter.io/ios/app/field-guide/id872660183/reviews.md

## What is Field Guide?

Oklahoma Nutrient Management Field Guide App is a mobile version of a printed handbook.  Within this App users have access to nutrient removal values, a nutrient deficiency identification tool, fertilizer calculations for all of the major crops grown with Oklahoma and information on fertilizer sources and using the N-Rich Strip and GreenSeeker Sensor.


## Version history (last 1 release)

### 1.1.2 — 2019-12-14

Updated the build and changed the old OSU Agriculture logo to new OSU Agriculture Logo

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## More apps by Oklahoma State University

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All apps by Oklahoma State University: https://appshunter.io/developer/393442180

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*