Potato Leafhopper In Alfalfa

This article was originally written by Joel Bagg in 2012. It was edited May 25, 2022 by Christine O’Reilly to reflect current insecticide options to control potato leafhopper and the cessation of third-party alfalfa variety trials in Ontario. Potato leafhopper (PLH) is the most damaging alfalfa insect pest in Ontario in most years. While the […]

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Pest Alert: Alfalfa Weevil and Leafhopper Numbers High

Alfalfa weevil and potato leafhopper (PLH) are being reported as extremely high in many fields.  Hot dry conditions have made it more favourable for these pests than their natural enemies (especially entomopathogenic fungi). Scout fields to determine if cutting is possible or if an insecticide application is necessary if thresholds are reached. Consider fields at […]

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July 2018 Forage Report

percent of average rainfall Ontario July 2018

Map shows the percent of average rainfall received across Ontario in July, 2018 Lab analyses indicate that quality decline for first cut was very fast, and test results range from low to very high quality. Producers cutting based on calendar date rather than crop stage may have lower quality forages than expected. Pasture regrowth has […]

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Leafhopper Alert

Despite the wet weather, potato leafhoppers (PLH) are thriving in many areas of the province. Hopperburn is evident in the second crop of alfalfa, though dry bean fields are also at risk, especially once insecticide seed treatments are no longer present in the plants.  Unfortunately, once hopperburn is noticed, yield and quality has already been […]

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