Ontario Field Crop Report – July 27, 2022

Straw bales post-wheat harvest

Weather Conditions The percentage of average precipitation during the current growing season is quite variable across the province. Crop conditions generally mirror precipitation levels with below average precipitation received in mid-western and southern Ontario causing significant crop stress, especially on lighter textured soils. Conversely, parts of eastern Ontario are above average with generally good crop […]

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Ontario Field Crop Report – June 22, 2022

Thrips feeding scars run parallel to the veins of corn leaves. Photo credit: Susan Gowan, Gowan Consulting.

Insect/Pest Update – Current Issues Cereal leaf beetle (CLB) populations have reached threshold in some spring cereal fields this week (Figure 1). CLB larvae and adults feed on the tissue between leaf veins, leaving long scratch marks that can make plants appear silver or frosted from a distance. Before boot stage, the threshold is an […]

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Crop Report – June 15, 2022

Mn deficient leaves turn yellow across the whole leaf, except for the veins which remain green.

Soybean Update Soybeans range from VE (emergence) to the fourth trifoliate leaf stage. The majority of the crop was planted in May, although sporadic showers meant that some could not be planted until June. A few soybeans were planted in April. They are now at the fifth trifoliate leaf stage. Ideally, soybeans should have 6 […]

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Crop Report – June 8, 2022

Figure 1. Purpling of leaves on corn seedlings

Conditions For most of southern and central Ontario, this week’s rains were timely to support crop establishment. Precipitation June 7th ranged from 12 to 50 mm (1 to 2 inch), with regional reports in southern Ontario (Lambton, Middlesex, Bruce and Grey counties) reporting over 50 to 55 mm (2 to 2.3 inch). Cereals Herbicide applications […]

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Crop Report – June 1, 2022

Early vegetative stages are a great time to scout fields for gaps or delayed plants and troubleshoot for issues that may have led to these.

Conditions Some sporadic rains have occurred across the province this last week. In areas where planting is mostly complete, these rains have generally been well received. Temperature swings between stretches of very warm and cooler weather has continued this spring, though crop heat unit (CHU) accumulation is similar to slightly ahead of normal. Cereals Emergence […]

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Crop Report – May 25th, 2022

Figure 2. Alfalfa weevil feeding on leaf-tips reduce forage yield and quality.

Conditions A large storm system with high winds, and variable amounts of rain on Saturday swept across Windsor to Quebec City, and left widespread power outages, downed trees, and property damage. The storm was classified by Environment Canada as a Derecho, (Figure 1.) which is defined as a line of intense, widespread and fast-moving windstorms and […]

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Crop Report – May 18th, 2022

Figure 2. Corn coleoptile ready to emerge from a sandy loam in Eastern Ontario on May 13th.

Conditions Large swaths of the province saw rain early this week, which put a pause on a very productive planting window over the previous week and a bit. The forecast predicts slower progress due to more regular precipitation, which will provide some stress relief on fields that were starting to turn alarmingly dry. Northwestern Ontario […]

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Crop Report – May 4th, 2022

Figure 1. Winter wheat at GS30 in Brant County.

Nitrogen applications in winter wheat are progressing throughout the province as breaks in the spring rain provide opportunities to get out in the field. Tillage and other field preparations have begun. Cereals Winter wheat fields in general continue to look good across the province with many counties reporting early planted wheat at GS30 and some […]

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