Onions, Garlic: Basal rot categories: Onions, Garlic Onions, Garlic Diseases Vegetables revision date: 2022-12-07 12:00 Onion basal rot in early seasonPhoto by: L.J. du Toit Biology Basal rots of onion, garlic, and related species are caused by fungi. Affected plants are yellowed, wilted, and grow poorly. Reddish discoloration may be present on affected garlic, while […]
Onions, Garlic: Downy mildew categories: Onions, Garlic Onions, Garlic Diseases Vegetables revision date: 2022-12-07 12:00 Downy mildew on onionPhoto by: R.S. Byther Biology Downy mildew is a fungal disease affecting onions and related species, including weedy species. Leaves initially develop pale, elongate patches. The spots may be water-soaked at first, then later appear somewhat purplish. […]
Onions, Garlic: Gray mold categories: Onions, Garlic Onions, Garlic Diseases Vegetables revision date: 2022-12-07 12:00 Botrytis gray mold on onionPhoto by: R.S. Byther Biology Gray mold is a fungal disease primarily found on garlic. It attacks the tissues of the neck and bulb and occasionally causes a leaf blight. Symptoms of infection typically appear on […]
Onions, Garlic: Neck rot categories: Onions, Garlic Onions, Garlic Diseases Vegetables revision date: 2022-12-07 12:00 Onion neck rot symptomsPhoto by: L.J. du Toit Biology Neck rot is a fungal disease which can affect onions and related species. Infection typically occurs in the field, but symptoms often do not appear until bulbs are in storage. The […]
Onions, Garlic: White rot categories: Onions, Garlic Onions, Garlic Diseases Vegetables revision date: 2022-12-07 12:00 Sclerotia on surface of white rot-infected bulbsPhoto by: R.S. Byther Biology White rot is a fungal disease which affects onions and related species. Cool, wet conditions may be followed by wilting and yellowing of leaves beginning at the base of […]
Onions, Garlic: Onion maggot categories: Onions, Garlic Onions, Garlic Insects Vegetables revision date: 2022-12-07 12:00 Onion maggot and damagePhoto by: E.P. Breakey Biology The onion maggot is the larvae of a slender gray fly about 1⁄4″ in length. Female flies lay eggs near the base of host plants including onion, garlic, leek, and shallot. The […]
Onions, Garlic: Onion thrips categories: Onions, Garlic Onions, Garlic Insects Vegetables revision date: 2023-04-04 12:00 Onion thripsPhoto by: Unknown Biology Onion thrips are tiny, slender insects about 1⁄16″ long. They are yellowish to dark in color, depending on age. They feed on tender inner leaves, causing longitudinal silvery to white mottling or streaking along the […]