Time to Scout for Soybean Aphids

With some soybean fields in early flowering, it is time to scout fields for soybean aphids. Early planted fields tend to be the first to be colonized. The mom aphids start depositing nymphs in pockets in the field that start to build populations of up to 1000s per plant. Once these pockets of aphids get […]

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June 2022 Forage Report

South and West According to Agriculture and Agri-Food Canada: Bruce, Grey, Dufferin, Simcoe, Niagara, Elgin, and parts of Lambton and Middlesex received average or above average precipitation for June. The rest of the region had below-average rainfall. Above-average levels of winterkill reduced yields in affected fields. Although some dairy producers cut on their preferred calendar […]

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Blister Beetles

black blister beetles

Description Blister beetles are very rare in Ontario but have been occasionally found in alfalfa fields north of Lake Erie. They are more common in arid climates, such as the U.S. Midwest, and are often associated with grasshopper infestations. The three most common species are the black blister beetle (Epicauta pensylvanica), the ash grey blister […]

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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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