2024 Corn Seasonal Summary

Black tar spot stromata on corn leaves in an Oxford County field in September 2024.

Planting In March 2024, Statistics Canada estimated Ontario farmers intended to plant 2.3 million acres of grain corn, 5% higher than the 5-year (2019-2023) average seeded acres of 2.2 million acres (OMAFA Crop Statistics).  Unsettled weather and highly variable planting progress dominated the spring of 2024. Frequent rains through April limited early corn planting. Frequent […]

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2024 Ontario Grain Corn Ear Mould and Deoxynivalenol (DON) Mycotoxin Survey

OMAFA field crop specialists in collaboration with Grain Farmers of Ontario (GFO) and members of the Ontario Agri-Business Association (OABA) have completed the 2024 annual Ontario corn ear mould and DON mycotoxin survey. Corn ear moulds such as Gibberella and their corresponding mycotoxins occur every year in Ontario. These mycotoxins, particularly deoxynivalenol (DON, also referred […]

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Pest Activity For Early August

There are a few pests to keep an eye on over the next few weeks. Western Bean Cutworm We likely reached peak moth flight either last week for most of the southern counties or this week for the rest of the province, except Northern Ontario, based on the Degree Day Prediction Model and trap counts […]

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Anticipated Soil Nitrogen Supply for 2024’s Corn Crop

Field corn at 3 leaf stage, growing despite wet conditions.

Summary: Background: Throughout the growing season, microbes within the soil break down organic nitrogen contained in soil organic matter and crop residues and release it as plant-available ammonium.  This process is known as nitrogen mineralization. Nitrogen mineralization is favoured by warm soil temperatures with adequate soil moisture and aeration.  Excess moisture can slow mineralization or […]

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Cutworms of All Kinds

It is safe to call 2024 a good pest year. Mild winters and warm springs tend to help pests overwinter well or expand their range further than usually and get ahead of crops when soil conditions delay planting. Armyworm and cereal leaf beetle are continuing to show up in some wheat fields, while some grubs […]

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Ontario Corn Nitrogen Calculator

The Ontario Corn Nitrogen Calculator can be accessed by clicking the icon below. (this is the same tool previously posted on gocorn.net) Simple Summary The Corn Nitrogen Calculator Ontario Corn Nitrogen recommendations are derived from the Ontario corn nitrogen database which contains over 40 years of Ontario corn nitrogen yield response data. Current recommendations were […]

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Ontario Corn Replant Decision Aid Tool

The Ontario corn replant decision aid can be accessed by clicking the icon below. (this is the same tool previously posted on gocorn.net) Simple Summary Ontario Corn Replant Decision Aid Tool If you’ve had stand issues following planting corn, you’ve maybe wondered whether the field should be left as-is or if there is an economic […]

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Ontario Corn Committee Hybrid Selector Tool

The Ontario corn committee hybrid selector tool can be accessed by clicking the icon below. (this is the same tool previously posted on gocorn.net) Simple Summary Ontario Corn Committee Hybrid Selector Tool The Ontario corn committee hybrid selector tool allows head-to-head comparisons of up to 4 hybrids across years and locations where all selected hybrids […]

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