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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Agronomy Guide For Field Crops – Corn – No Till and Other Considerations

No-Till Systems In no-till systems, tillage is not used to prepare a seedbed. Minimal soil loosening in a narrow band immediately ahead of the seed opener is performed by planter-mounted coulters and/or residue clearing devices. Successful no-till corn production is partially dependent on effective use of field management strategies which may include alternative production practices […]

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2020 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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2019 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 Provincial corn ear mould and mycotoxin survey. Corn ear moulds such as Gibberella and their corresponding mycotoxins occur every year in Ontario. […]

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Mount Forest Ag Breakfast Minutes – April 23, 2019

A field of winter wheat in April, 2019 that shows parts of the field with adequate stands and areas of the field that have winter killed and are bare.

Who was in attendance? 26 agricultural professionals working in the counties of Waterloo, Wellington, Huron, Grey, Bruce, Dufferin and Simcoe counties. The past week’s weather summary: 40-50 mm of rainfall fell over the Easter weekend and understandably, field conditions are extremely wet with essentially no field activity. This will put additional pressure on livestock producers who […]

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Nitrogen Status in 2018 Corn Fields

Co-authored with Ian McDonald Background OMAFRA Field Crop Unit staff have traditionally conducted an annual Pre Sidedress Nitrogen Test (PSNT) survey across Ontario at the beginning of June to measure background soil nitrate levels mineralized from the soil as an indication of year-to-year soil nitrogen status. In past years, 80-100 samples would be collected from […]

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2017 Grain Corn Ear Mould and Vomitoxin (DON) Survey

Co-Authored with Albert Tenuta, Field Crop Pathologist, OMAFRA OMAFRA field crop staff with the assistance from members of the Ontario Agri-Business Association (OABA) have completed the annual Provincial corn ear mould and mycotoxin survey. These mycotoxins, particularly vomitoxin (DON) produced primarily by Gibberella/Fusarium ear moulds can be disruptive when fed to livestock, especially hogs. The […]

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Winchester AgBreakfast Minutes – April 26, 2016

Conditions: Soil drying up, but below average temperatures are limiting field activity to manure/fertilizer application and forage/spring cereal seeding. Forages: Alfalfa winter survival is good, generally in the 80% plus range. Winterkill is mostly limited to low/poorly drained pockets. The combination of heavy and moisture saturated soils has led to some heaving. Alfalfa fields not […]

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