2021 Ontario Grain Corn Ear Mould and Deoxynivalenol (DON) Mycotoxin Survey

Co-authored with Albert Tenuta, Field Crop Pathologist, OMAFRA. OMAFRA field crop specialists in collaboration with Grain Farmers of Ontario (GFO) and members of the Ontario Agri-Business Association (OABA) have completed the annual Ontario corn ear mould and DON mycotoxin survey. Corn ear moulds such as Gibberella and their corresponding mycotoxins occur every year in Ontario. […]

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Making Cover Crops Pay Webinar Series

The Making Cover Crops Pay series (available on YouTube and linked below) includes three practical webinars that have discussions and presentations by technical specialists and experienced farmers. This series is presented by Soils at Guelph, the Ontario Ministry of Agriculture, Food, and Rural Affairs (OMAFRA) Soil Team, Grain Farmers of Ontario, and the Ontario Soil […]

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Crop Advances Research Summary: Investigating Strip Till P & K Placement and Timing (2019 and 2020)

Purpose: As strip till gains in popularity as a reduced-tillage option offering conventional tillage benefits for corn production, some of the most common questions revolve around phosphorous (P) and potassium (K) fertility management. This project was initiated to answer some of the more common questions around strip till and fertility placement and timing, particularly: How […]

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Canadian Bt Corn Trait Tables for April 2021

The Canadian Bt Corn Trait Tables have been updated for April 2021. English:  Canadian Bt Corn Trait Table for April 2021  French: Maïs Bt disponibles au Canada (Avril 2021) For information on which hybrids or products have obtained EU approval, visit the Canadian Seed Trade Association’s corn hybrid database at: https://seedinnovation.ca/hybrid/ Pour plus d’informations sur les hybrides […]

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Agronomy Guide For Field Crops – Corn – Fertility – Nitrogen

Nitrogen (N) Corn responds well to nitrogen, so adequate availability of nitrogen is critical to profitable corn production. Excess nitrogen adds unnecessary expenses and increases the risk of nitrate movement to ground water, poorer quality of surface water and production of greenhouse gases through nitrous oxide emissions. Insufficient nitrogen leads to nitrogen deficiency. Nitrogen deficiency […]

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Agronomy Guide For Field Crops – Corn – Emergence and Spacing Uniformity, Replant Decisions

Stand

Uniformity of Emergence Uniform seeding depth is a critical factor in achieving uniform emergence. Uneven emergence affects crop performance, because competition from larger, early-emerging plants reduces the yield potential of smaller, later-emerging plants. Yields can be reduced by 5% when half the stand suffers from a 7-day delay in emergence and by 12% when half […]

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Agronomy Guide For Field Crops – Corn – Hybrid Selection

Hybrid Selection Maturity Ratings Corn development is driven primarily by temperature, especially during the planting-to-silking period. Unlike soybeans, day length has little effect on the rate at which corn develops. The Ontario crop heat unit system has been developed to calculate the impact of temperature on corn development. Ontario crop heat units (CHUs) are calculated […]

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