Tag: Pest Control

Colorado Potato Beetle

Pest: Colorado Potato Beetle (Leptinotarsa decemlineata) Pest identification and lifecycle, most common symptoms and crops affected: As with most other insects and plants, there is a direct relationship between higher temperatures (in the range between about 55 and 90 degrees) and faster rate of development. That includes egg-laying, egg hatch, larval growth and feeding rates.

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Seedcorn Maggot and Other Maggots

Pests: Seedcorn maggot (Hylemya platura), Onion maggot (Delia antiqua), Cabbage maggot (Delia radicum) Pest identification and lifecycle, most common symptoms and crops affected: Seedcorn maggot larvae feed on seeds and young seedlings of many crops (including corn, beans, beets, peas, spinach, onions and Brassicas). The first symptoms are usually poor germination (or failure of seedlings

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Seedling Problems

In the early spring, when most plants are still in greenhouses — a much more controlled setting than gardens and fields — a lot of the problems that arise are abiotic (i.e., not infectious). Sometimes abiotic issues are transient (e.g., cold temperatures) so it’s good to both check new growth to see how it looks

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Leek Moth

Pests: Leek Moth (Acrolepiopsis assectella) Pest/disease identification and lifecycle, most common damage symptoms and crops affected: Leek moth is a newer invasive pest of allium crops like onions, garlic, shallots and chives, and, as the name suggests, they are particularly fond of leeks. As with most moth pests the crop damage is from its larval

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Three-Lined Potato Beetle

Pests: Three-Lined Potato Beetle (Lema daturaphila) Pest/disease identification and lifecycle, most common damage symptoms and crops affected: The favorite foods of the three-lined potato beetle are crop and weed species in the Physalis genus, notably tomatillo and husk cherries. Potatoes, tomatoes and eggplants are also sometimes attacked. The adult of this pest is about the

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Spinach Leafminer and Beet Leafminer

Pests: Spinach leafminer (Pegomya hyoscyami), Beet leafminer (Pegomya betae) Pest/disease identification and lifecycle, most common symptoms and crops affected: These closely related species of leafminer attack spinach, beet, chard and some weeds, such as lambsquarters. The adult is a fly that lays its eggs on the undersides of leaves. Eggs hatch in as few as

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Cabbageworm

Pests: Imported Cabbageworm (Pieris rapae), Diamondback Moth (Platella zylostella), Cabbage Looper (Trichoplusia ni)rioceris duodecimpunctata) The first sign of imported cabbageworm is typically one or more white moths with dark marks on their wings fluttering around brassica plants during the day. Also known as cabbage whites, these moths lay ⅛-inch long eggs singly on brassica crop

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Onion Thrips

Pest: Onion Thrips (Thrips tabaci) Pest/disease Identification and lifecycle, most common symptoms and crops affected: Onion thrips are active already, and if they have been a problem for you in years past it is time to start scouting for them. They are very tiny and easily overlooked until the onion plants start showing leaves that

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Garden Springtails

Pest: Garden Springtails (Collembolla) Pest/disease identification and lifecycle, most common symptoms and crops affected: Springtails are a very diverse group of soil dwelling arthropods, that largely feed on decaying organic matter. As such, most springtail species are playing a beneficial role in a healthy soil’s food web. That knowledge may be of little relief, however,

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Sunscald/Windwhip

Pest/disease identification and lifecycle, most common symptoms and crops affected: Plants that have not yet been hardened off thoroughly, or can’t get all the water they need, can suffer from something akin to a sunburn. The damage usually shows up first as a bleaching of exposed leaf surfaces, typically higher up on the plant, though

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