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:
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Stripe and Leaf Rust Identified in Ontario Winter Wheat Fields
Co-authored with Albert Tenuta, Pathologist, Field Crops and Peter Johnson, Agronomist, Real Agriculture As of May 12, 2025 stripe and leaf rust had been identified in a small number of fields in Perth (Leanne Frietag) and Grey (Deb Campbell) counties. However, as of May 27, 2025 stripe rust has continued to progress and has been…
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Crop Report – Week of June 30th, 2025
Swede midge and imported cabbageworm observed in canola At this time, canola exists in Ontario at almost every growth stage. Late planted or re-seeded spring canola is at the seedling stage in Northeastern Ontario. There is also spring canola approaching first flower, and some already in full bloom in the far north and Grey, Bruce,…
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Soybean Aphid Activity in Some Fields
Soybean aphids (SBA) have been spotted in a few fields in southern Ontario that haven’t seen SBA in quite a few years. As soybeans begin to enter R1, weekly scouting is advised, focusing first on the earlier planted fields close to or in R1, as well as any that have not had much rain and…
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Crop Conditions – Week of June 23rd, 2025
The start of this week has been marked by several days of well above normal temperatures – daily highs in the low to mid 30’s brings the first summer-like hot spell across much of Ontario. These temperatures have helped reduce the heat unit deficit that has been a hallmark of spring 2025. Field Corn Very…
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Know What’s in your Fertilizer
Interpreting the available nutrients in a fertilizer analysis Whether you are using a commercial fertilizer, organic amendments like manure or compost, or fertilizer by-products from industrial sources, it’s critical to know the nutrient analysis of the product. Analyses for agricultural nutrient sources may come in several different ways: When using a nutrient fertilizer source that…
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Ontario Soil Management Committee
Table of Contents Mandate and 5 Year ThemesMembershipTerms of ReferenceHow to Submit New Recommendations or UpdatesData Requirements to Change RecommendationsFor More Information Mandate 5 Year Themes In particular, the OSMC will concentrate on the following broad themes over the next five years: Membership Membership of the OSMC is comprised of members drawn from government, the…
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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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How do I manage alfalfa weevil?
Alfalfa weevil is a major alfalfa pest in Ontario. Larvae feeding on alfalfa leaves can reduce both yield and forage quality. The simple answer As alfalfa gets taller it can tolerate more weevils before action is necessary to protect forage yield and quality. Action thresholds for managing alfalfa weevil are as follows: Stem Height Number…
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Should I use a plant growth regulator in my winter wheat?
Plant growth regulators (PGRs) are applied to winter wheat to reduce plant height and increase stem thickness. Reducing the risk of lodging or delaying the onset and amount of lodging that occurs makes it easier to manage and harvest wheat. PGRs can also improve yields, particularly where moderate to severe lodging occurs. The simple answer…
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How do I manage potato leafhopper in alfalfa?
Potato leafhopper is a major alfalfa pest in Ontario. Yield losses may reach 50%, and crude protein content can drop 2-3% from heavy infestations. Potato leafhopper feeding decreases stand vigour, slows regrowth and increases winterkill. The simple answer As alfalfa gets taller it can tolerate more potato leafhoppers before action is necessary to protect forage…