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Carrots - Diseases, Pests and Problems





Basic Information



Problem: Maggots (carrot rust fly)
Affected Area: Root

Description: Small maggots burrow into carrots.

Control: Apply *Diazinon or other insecticide to the soil in early spring. * Pesticide use and recommendations for various areas are constantly changing. Check with your County agent for current recommendations.


Problem: Wireworms
Affected Area: Root

Description: Larvae of click beetles. Shiny, slender, brown, hard-shelled, soil dwelling worms ranging from 3/8" to 1 1/2" long. May be soft-bodied, white with yellowish brown heads and tails. Wire worms may remain in the larval stage for 2 to 5 years moving up and down in the soil depending on the temperature and moisture. Adults feed little, but larvae feed on underground roots doing their worst damage when they bore straight in.

Control: * Rototill garden soil in fall to expose wireworms. * Diazinon granules worked into the soil (read label directions) gives season-long protection. Only needed when damage is at critical levels. * Pesticide use and recommendations for various areas are constantly changing. Check with your County agent for current recommendations.


Problem: Root Knot
Affected Area: Root

Description: Carrots have forked roots and irregular galls on root system Caused by Root nematode

Control: Plant resistant varieties and rotate crop


Problem: Soft Rot
Affected Area: Root

Description: Black, brown, white and gray molds appear on surface. Carrots lose firmness and soften. Symptoms may resemble insect damage

Control: Avoid injury during harvest. Cool quickly if storing indoors






Carrots

Tips

Carrots do not thrive in very heavy soils.

 

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