Carrot Pest Management Guidelines
UC agricultural management guidelines for control of carrot pests. Relative Toxicities of Pesticides Used in Carrot to Natural Enemies and Honey Bees (1/09) Carrot Weed Photo Gallery, with Common and Scientific Names (10/05) Alternaria Leaf ... [... more]
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Bacterial Leaf Blight
UC Management Guidelines for Bacterial Leaf Blight on Carrot. Bacterial leaf blight is often first noticed in fields as brown areas about 3 to 4 feet in diameter. Leaf symptoms appear as irregular brown spots, often beginning on the leaf margins. ... [... more]
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Scientific Name: Systena blanda
UC Management Guidelines for Palestriped Flea Beetle on Carrot. Flea beetle adults are small (about 0.12 inch long), shiny, beetles with enlarged hind legs that allow them to jump like fleas. The palestriped flea beetle has a broad, white stripe ... [... more]
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Cercospora Leaf Blight
UC Management Guidelines for Cercospora Leaf Blight on Carrot. Cercospora blight can occur on any above ground carrot tissue. However, symptoms are usually most severe and obvious along leaflet margins. Infection sites initially appear as a brown ... [... more]
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Preemergence.
Carrot is a slow-growing crop that suffers severe yield loss from weed competition. Its thin, feathery leaves do not shade out competing plants and its long growing season creates an opportunity for successive flushes of weeds throughout the ... [... more]
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Cavity Spot
Cavity spot is characterized by elliptical to irregularly shaped, depressed lesions oriented across the mature carrot tap roots. Individual lesions are usually less than 0.5 inch (1.3 cm) in diameter, but can be much larger, especially on ... [... more]
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Carrot Thin Leaf
Symptoms on plants infected with Carrot thin leaf virus can vary. In general, leaflets appear thinner than normal, giving the plant an overall unusual appearance. Some leaves may have leaflets that are distorted and show a mosaic pattern. ... [... more]
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Bean Aphid
Bean aphid is a dark, olive-green to black colored aphid. It is most easily confused with the cowpea aphid. Bean aphid has a dull, mattelike appearance while the cowpea aphid is shiny. The cauda (tail-like structure) of the bean aphid has more ... [... more]
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SOWTHISTLE
Information about Special Weed Problems in Carrot. . Sowthistle, little mallow, and nightshade are annual weeds that are difficult to control in carrots. The registered herbicides will not control these weeds very well. Avoid growing carrot crops ... [... more]
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Pathogen: Pectobacterium carotovorum ssp. carotovorum
Bacterial soft rot appears as a soft, watery, and slimy decay of the taproot. The decay rapidly consumes the core of the carrot, often leaving the epidermis intact. A foul odor may be associated with soft rot. Aboveground symptoms include a ... [... more]
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Iris whitefly: Aleyrodes spiraeoides
Whiteflies are small insects that are about 0.04 inch (1 mm) long. The body and wings of adults are covered with a fine, whitish powdery wax that is opaque in appearance. Whiteflies colonize the underside of leaves; adults and eggs are commonly ... [... more]
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Black Rot (Black Crown)
UC Management Guidelines for Black Rot (Black Crown) on Carrot. Black rot starts in the carrot crown at the point of leaf attachment, beginning with the outermost petioles; eventually all the leaves can be killed. The upper part of the carrot ... [... more]
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