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Field Crop News is a resource for Ontario field crop production. It is managed by the Field Crop Unit of the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA). Browse our library of information by:

  • Effectively Managing Stripe Rust

    Effectively Managing Stripe Rust

    Co-authored with Albert Tenuta, Pathologist, Field Crops In 2016 the milder winter conditions resulted in early leaf and stripe rust infections in Tennessee and Kentucky. This resulted in rust spores being blown into Ontario earlier than we typically see. By mid-May 2016, stripe rust was prevalent in most areas of southwestern Ontario. Growers who selected…

  • Crop Report – May 16, 2024

    Field Conditions The season continues to be advanced of normal, which is especially evident in perennial and over-winter crop development. Crop heat units (CHU) and growing degree days (GDD) are significantly above the 10-year average, especially in southern Ontario. Progress for field work, particularly on heavier-textured soils has been limited due to frequent patchy rain,…

  • Alfalfa Weevil

    Alfalfa Weevil

    This article was originally written by Joel Bagg in 2013. It was edited May 25th, 2022 by Christine O’Reilly to reflect current insecticide options to control alfalfa weevil. Alfalfa weevil can be an issue in Ontario, particularly in south-western parts of the province. While outbreaks tend to be isolated, they can be severe and dramatically…

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  • Crop Conditions – Week of May 2nd, 2024

    Crop Conditions – Week of May 2nd, 2024

    Frequent rains and wet soils across the province have slowed or prevented field work. Soil compaction is likely to be an issue this year, especially for farmers trying to get manure spread ahead of spring planting. Fertilizer has been moving out to farms with storage. Retailers are full and ready to apply product once soil…

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    SHAP: Soil Health Assessment & Plan In-Field In-Office Match SHAP to your needs Assess Benchmark 5 Key Soil Health Indicators Improve Find Potential for Improvement Adapt Take a Flexible approach Interpret Use the SHAP Score Calculator to compare your test results to a database of results from similar Ontario soils. Use this benchmark to identify…

  • Soil Management Day – August 23, 2023

    Soil Management Day – August 23, 2023

    Join the OMAFRA Soil Team and the Ontario Soil Network in London for a full day of collaborative learning. Dive deep into diagnosing and finding solutions for real soil health challenges in a real field! Share learnings and experiences with other soil health professionals, and pick up a great new ideas along the way. A…

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  • When do cover crops, with and without manure applied, release nitrogen that can be used for my corn crop?

    When do cover crops, with and without manure applied, release nitrogen that can be used for my corn crop?

    Cover crops can produce nitrogen. We looked at when different species release nitrogen and the impact that adding manure has on the timing and release of nitrogen. The simple answer Predicting nitrogen (N) availability from cover crops is complicated. Cold and wet conditions in the spring negativelyimpact soil microbial activity and can result in significant…

  • When should I spray my cereal rye cover crop before soybeans?

    When should I spray my cereal rye cover crop before soybeans?

    Cereal rye is a versatile cover crop that can be seeded late into the fall in Ontario. Not to be confused with annual ryegrass – a grass that can be challenging to control – it is a winter cereal that overwinters reliably and grows rapidly in the spring. Delayed termination of rye by herbicide prior…

  • Is the yield potential of alfalfa increasing?

    Is the yield potential of alfalfa increasing?

    The relationship between alfalfa breeding efforts and yield potential is complicated. While most literature on annual grain crops shows yield improvements with the release of new varieties over time, a literature search on alfalfa yield will show improvement, stagnation, and declines, depending on the paper. One of the latest attempts to discern what is really…

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