Greenhouse disease and insect management recommendations for 2021

Michigan State University Extension has updated their insect and disease management recommendations for the 2021 greenhouse season. There have been some changes from the previous 2020 recommendations. These recommendations are updated yearly to reflect efficacy of pesticides as MSU Extension specialists and their nationwide colleagues perform research trials evaluating the products against common greenhouse insects, mites or diseases. The pesticides are evaluated by a network of researchers involved in the IR-4 Project, a research group that facilitates the labeling of pesticides on specialty crops, including greenhouse crops.

Insect management
MSU Extension entomology specialist for ornamentals, David Smitley has released his “2021 Greenhouse Pest Management with Insecticides” recommendations. These are the recommended products to control thrips, aphids, whiteflies, spider mites, broad and cyclamen mites, fungus gnats, mealybugs, and Florida fern caterpillar.

Growers of greenhouse vegetables and greens can use the guide, “Recommended Insecticides for Common Greenhouse Pests on Vegetables, Herbs and Leafy Greens,” when considering an insecticide application. The guide provides the names of the products, active ingredients, vegetable crops on the label, and recommended pests they control. For more information on the guide, see the MSU Extension article, "Insecticides for common pests on greenhouse vegetables and transplants."

Download the complete guide here. 

For more information: 
Michigan State University
www.canr.msu.edu 

 


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