Agronomy Apps and Guides
Apps, guides, tools and resources specific to grain farming, developed by Grain Farmers of Ontario or that which Grain Farmers of Ontario has supported the development of via funding or through research.
Pest ID factsheet
There are many pest identification apps that are in the marketplace, this factsheet gives an overview of what some common apps cover with respect to disease, insects, weeds and other. Download it here.
Flag My Field App
Flag My Field allows farmers to identify areas on their farm where extra precautionary steps may need to be taken when applying pesticides in neighbouring fields so as to minimize the risk of off-target pesticide drift.
This is a statistical tool for anyone doing on-farm trials.
This tool is designed to help you calibrate your sprayer.
In the beta version of the tool, users can search for action thresholds of common pests in several field crops.
This is a simple tool that lets you keep track of seasonal records.
Manage Resistance Now
Resistance can significantly impact yield, profit and even land value. Manage Resistance Now is a complete go-to resource to help growers and industry proactively manage herbicide, insecticide and fungicide resistance.
Crop Protection Network
Grain Farmers of Ontario sponsors the Crop Protection Network, an international partnership of university and provincial Extension specialists, and public and private professionals that provides unbiased, research-based information. Visit to view fact sheets, webinars, yield assessments and more about specific insects, disease or weeds.
Canadian Corn Pest Coalition
The Canadian Corn Pest Coalition (CCPC) is a collaborative group of experts promoting the proper stewardship of corn pest management technologies. Visit to learn more about entomology, insect resistance management, pathology, and agronomy, and regulatory bodies.
This app is to assist farmers in marking management decisions for white mould in soybeans. It is fully developed by the University of Wisconsin, but is suitable for Ontario conditions as well.
This app is to assist farmers in making management decisions for tar spot in corn. It is fully developed by the University of Wisconsin, but is suitable for Ontario conditions as well, and as this disease becomes more prominent in the region will become increasingly more accurate.
Cash Cropper App
Cash Cropper allows you to compare the net profitability and fertility requirements for different crop rotations within a given field.
Download currently unavailable.
Ontario Corn Nitrogen Calculator
This mobile app generates a recommendation for the most economical N rate for a corn field.
Download currently unavailable.
Resilient Fields helps you work through specific field challenges to obtain sustainable solutions for your field crops. BMP conflicts and trade-offs are part of farming. Work through Resilient Fields’ resources and solutions to determine the best field practices for your soil, your water, your crop, your future.
Crop Nutrient Calculator, Organic Amendment Calculator, Fertilizer Calculator, Phosphorus Loss (PLATO) Calculator, Field Management Plan, Manure Storage Sizing Calculator.
Moisture Shrink Calculator
Pub 811 – Agronomy Guide for Field Crops
All your agronomy questions from planting to harvest and from crop damage to insect identification can be answered in the 425 pages of agronomy knowledge in the Agronomy Guide for Field Crops. Read online
Pub 812 – Field Crop Protection Guide
Insect and disease control methods in field crops can be found in Publication 812, the Field Crop Protection Guide, it’s up to date for the 2020 season. Read online
Pub 75 – Guide to Weed Control
Insect and disease control methods in field crops can be found in Publication 812, the Field Crop Protection Guide, it’s up to date for the 2021 season. Read online
Guide to Early Season Crop Pests
This guide is a tool to help identify pests that attack field crops early in the growing season. Under each pest, the guide outlines how to identify the pest, explains their life cycle and the damage they cause. It also details scouting techniques, thresholds and integrated pest management strategies including cultural, biological and chemical control. Additional information on protecting natural enemies as well as pollinators is also available at the end of the guide. This guide provides the basics for establishing an integrated pest management strategy for soil borne and early season pests in field crops, which will help target the use of insecticide treated seed to where it is necessary. Download and view the PDF.
Identifying Wheat Diseases Affecting Heads of Grain
This is a guide to wheat diseases affecting heads and grain. It covers diseases visible at head emergence, diseases visible during grain development, diseases visible just before harvest and diseases causing problems in other countries. Learn to recognize common wheat diseases: loose smut, fusarium head blight, stagonospora glume blotch, black chaff, sooty molds, common bunt/dwarf bunt, ergot, and wheat blast. Download the PDF of this guide here.
Weed ID Guide for Ontario Crops
Recognize over 120 species commonly found in and around agricultural fields. Print copies are available to be ordered on-demand here. Download the PDF of this guide here.
The Cover Crop Tool – use to find which cover crops are best suited for your region and your specific operation. Supported by Grain Farmers of Ontario research.
Soils at Guelph creates a number of fact sheets and cover crop recipes based off of Ontario cover crop research, which is supported by Grain Farmers of Ontario