Rutgers Cooperative Extension
In this edition: Insects – Pest Scouting with growing degree-days (250-600 GDD50) Scales Mites Diseases Needle casts (Rhabdocline and Swiss needlecasts – Douglas fir, & Rhizosphaera – spruces) Phytophthora Soil fertility – resources Please click “read more” below to get updates on pests, diseases, and other important resources for the week of 5/15/2023.
Continue reading...In this edition: Insects: Scale crawler emergence Borer insects Upcoming problem pests / Redheaded flea beetle / SLF / Pest Scouting Guides Diseases: Leaf spot / foliage disease management Fire blight on Rosaceous hosts Canker fungi Boxwood blight Oomycete root diseases (Phytophthora, Pythium, Phytopythium) Plant Spotlight: NJ native azalea species Please click “read more” below […]
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Peach: Bacterial Spot: Generally we recommend starting at 0.5 ozs metallic copper and gradually lowering the rate as the season progresses. The rate applied will depend on the formulation. Dr. Lalancette published a chart listing common copper formulations and rates for peach and nectarine applications. Avoid combining copper with captan especially if it has been […]
Continue reading...Peach: Bacterial Spot: Generally we recommend starting at 0.5 ozs metallic copper and gradually lowering the rate as the season progresses. The rate applied will depend on the formulation. Dr. Lalancette published a chart listing common copper formulations and rates for peach and nectarine applications. Avoid combining copper with captan especially if it has been […]
Continue reading...Sweet Corn There will be significant changes to insect trapping efforts in the Vegetable IPM Program for this season. At present, personnel are deploying black light and corn earworm (CEW) pheromone trap networks in central and northern New Jersey counties. In areas from central Burlington County southward, grower cooperators have been provided with CEW pheromone […]
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Fungal Leaf Spots: Commonly found on the foliage of many plants, fungal leaf spots are largely cosmetic diseases. Most do not interfere with the normal growth & development of the plant. Therefore, within the landscape, fungicides are not normally recommended. Years that have relatively dry spring weather will experience fewer leaf spot infections. Many fungal […]
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