Asparagus: Asparagus aphid categories: Asparagus Asparagus Insects Vegetables revision date: 2023-04-04 12:00 Aphid colony on leafPhoto by: A.L. Antonelli Biology Asparagus aphids are small (1⁄16″), powdery gray to gray-green insects. They may be winged or wingless. They feed in colonies on the ferns of asparagus and are typically found at the base of leaves. Aphid […]
Asparagus: Asparagus beetle categories: Asparagus Asparagus Insects Vegetables revision date: 2023-04-04 12:00 Spotted asparagus beetle adultPhotographer unknown. Biology Two species of beetles feed on asparagus. Both are about 1⁄4″ long. The asparagus beetle is blue-black, with yellow and red markings. The overwintering adult beetles feed on emerging spears in the spring, sometimes causing distortion of […]
Asparagus: Cutworms and armyworms categories: Asparagus Asparagus Insects Vegetables revision date: 2023-04-04 12:00 Tan armyworm caterpillar Photo by: K. Grey Biology Cutworms and armyworms are the larvae of noctuid moths. These common moths are medium-sized with fairly dull coloration. The gray to tan caterpillars are hairless, nocturnal, and generally spotted, striped, or otherwise marked. They […]
Beet, Chard: Damping-off categories: Beet, Chard Beet, Chard Diseases Vegetables revision date: 2023-01-04 12:00 Damping-off of cucumber seedlingsPhoto by: R.S. Byther Biology Damping-off is caused by fungi that remain in the soil for long periods of time. Infected seeds decay without germinating. Seedlings may be infected and fail to emerge from the soil. Emerged seedlings […]
Beet, Chard: Downy mildew categories: Beet, Chard Beet, Chard Diseases Vegetables revision date: 2023-01-04 12:00 Downy mildew on beet plantsOSU slide library Biology Downy mildew can infect any aboveground portion of beets and Swiss chard. The fungus can infect young cotyledon leaves, causing them to appear yellow, mildewed, and to curl downward. Larger leaves develop […]
Beet, Chard: Aphids categories: Beet, Chard Beet, Chard Insects Vegetables revision date: 2023-04-04 12:00 Aphid colony on leafPhoto by: A.L. Antonelli Biology Aphids are small, pear-shaped, soft-bodied insects. They may range in color from yellowish to dark green. Aphids typically feed on the underside of leaves, sucking sap from the plant tissues. Aphid feeding can […]
Beet, Chard: Beet or spinach leafminer categories: Beet, Chard Beet, Chard Insects Vegetables revision date: 2023-01-04 12:00 Spinach leafminer damagePhoto by: A.L. Antonelli Biology The beet or spinach leafminer is the larva of a small (1⁄4″) gray fly with black hairs. Eggs are laid on the leaves of beets, chard, spinach, and weeds including lambsquarters. […]
Bean: Bean aphids categories: Bean Bean Insects Vegetables revision date: 2023-04-04 12:00 Bean aphid on leafK. Grey Biology Bean aphids are small, pear-shaped, dark green to black insects. These soft-bodied insects often feed in clusters on the shoot tips and leaves of new growth. Severe infestations can result in curled or deformed leaves and shoot […]
Bean: Bacterial blights categories: Bean Bean Diseases Vegetables revision date: 2023-01-04 12:00 Halo blight on green bean foliage C. Vanderstoep Biology Three distinct bacterial blights may affect beans in the area: halo blight (Pseudomonas syringae pv. phaseolicola), common bacterial blight (Xanthomonas axonopodis pv. phaseoli) and bacterial brown-spot (Pseudomonas syringae pv. syringae). Bacteria pathogens require an […]
Bean: Common and yellow mosaics categories: Bean Bean Diseases Vegetables revision date: 2023-01-04 12:00 Bean yellow mosaic virus symptomsR.S. Byther Biology Bean common mosaic and bean yellow mosaic are virus diseases typically transmitted by aphids. The bean common mosaic virus is also seed-transmitted. Typical symptoms of these virus infections include blue-green, green, or yellowish mottling […]