The Corn & Soybean Field Guide App for iPad

  The Purdue Extension Corn & Soybean Field Guide app for the Apple iPad is now available from the Purdue Extension Education Store and Apple App Store for $12.99.

If you have already purchased this app and have a support question, please email 3idpurdue@gmail.com.

A Trusted Resource

Growers and consultants around the world have been using the Purdue University resource for more than 20 years. The app is a comprehensive, practical tool that will help you maximize your corn and soybean production.

If you have ever used the pocket guide version of the Corn & Soybean Field Guide, this app will feel familiar, yet surprise you with its new photos and features.

Features

The Corn & Soybean Field Guide iPad app includes sections on:

Corn Management and Soybean Management

These two sections each include information about Planting, Growth & Development, Other Stresses & Yield Losses, Nutrient Deficiencies, Nutrient Recommendations, Insects, Nematodes, Diseases, Vertebrate Pests, Herbicides, and Diagnosing Herbicide Injury.

Weeds

This section includes information about Broadleaf Weeds, Sedge Weeds, Grass Weeds, Diagnosing Herbicide Injury, Herbicide Modes of Action, and Herbicide & Soil pH Reactions.

Soils & Fertility

This section includes information about Soil Sampling, Soil pH & Liming, Nutrient Deficiencies, and Nutrient Recommendations.

Calibration

This section includes information about Length of Row/Acre, Volume Dilution, Liquid Applicator Calibration, and Application Nozzles.

Calculators

This section includes calculators for Grain Weight Shrinkage, Estimating Corn Yield, Estimating Soybean Yield, Soybean Replant Guide, and Determining Soybean Population.

Sample Submission

This tool helps you quickly submit samples to the Purdue Plant and Pest Diagnostic Laboratory.

Review the App

If you like our app, don't forget to write a review in the Apple App Store.

​​