Dry Bean Agronomy

Japanese Beetle (Popillia japonica) Description Japanese beetle grubs are similar to European chafer and June beetle grubs, but are much smaller and have a different raster pattern (anal bristles) that can be identified using a hand lens (see grub section at beginning of the insect chapter of OMAFRA Agronomy Guide for Field Crops – Publication…Continue readingJapanese Beetle

BEAN LEAF BEETLE (Certoma trifurcata) Description The bean leaf beetle (BLB) adult is approximately 5 mm (0.2 in.) in length and may or may not have four black parallelogram shaped spots found on the wing covers. Adult beetles can vary in colour but are most often yellow-green, tan or red. All have a small black triangle…Continue readingBean Leaf Beetle

Photo credit: B. Hall Description The primary crops at risk are corn, soybeans, newly seeded forages, and canola. Juvenile and adult slugs are soft-bodied, legless, greyish or mottled in appearance and have a slimy or gelatinous covering that protects them from drying out. They are essentially snails without a shell. The head has two pairs…Continue readingSlugs

Seedcorn maggot (Delia platura) Description Crops at risk include corn, soybeans, and dry edible beans. The seedcorn maggot is a small (6–10 mm or 0.2–0.4 in.), yellowish-white, headless, legless larva. The body tapers to the front, with two small protracting mouth hooks. The adults resemble a small, elongated housefly that is slender, light grey and…Continue readingSeedcorn maggot

Grubs (European chafer, June beetle or Japanese beetle) Various types of grubs can attack field crops, primarily corn, soybeans, forages and winter cereals. European chafer and June beetle are the most common problem grubs in Ontario field crops, although Japanese beetle grubs can also cause damage. Proper identification of the species of grub present in…Continue readingGrubs