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Eggplant - Diseases, Pests and Problems





Basic Information



Problem: Flea Beetle
Affected Area: Leaf and Root

Description: Tiny holes ?pinholes? chewed in leaves by adult insect. Adult insects are 1/16" long, hard shelled, shiny, dark-colored beetles that jump when disturbed. Slender, whitish, cylindrical larvae feed in or on roots but root damage is generally minimal. They generally do not do much harm in themselves but may spread diseases.

Control: Keep debris removed. Rotate location of planting from year to year. Dust with *Rotenone * Pesticide use and recommendations for various areas are constantly changing. Check with your County agent for current recommendations.


Problem: Aphids
Affected Area: Leaf

Description: Small Insects found on new stems and the underside of the leaf. Usually green. They suck fluids from the plant leaving a honey dew substance behind. Leaves turn pale yellow.

Control: Insecticidal soaps or a strong stream of water. Ladybug beetles are natural predators. * Thiodan or Diazinon ? more than one application may be required. A layer of aluminum foil under plants reflects light to underside of leaves and may deter aphids. * Pesticide use and recommendations for various areas are constantly changing. Check with your County agent for current recommendations.


Problem: Leaf Hoppers
Affected Area: Leaf

Description: Yellowish green, wedge shaped, winged adults and their nymphs feed on plant foliage by piercing leaves and sucking on sap. On severe infestations, leaves may become crinkled and curled. They also spread virus diseases.

Control: Control weed patches where pests may hide. Sprays are not generally useful for light populations. * Malathion, Diazinon, and Sevin may offer some control. * Pesticide use and recommendations for various areas are constantly changing. Check with your County agent for current recommendations.


Problem: Verticillim
Affected Area: Leaf and Stem

Description: Foliage is blighted and wilts Plants wither and die

Control: Plant resistant varieties that have VFN appended to the name on the package. Do not sprinkle late in the day. Rotate eggplant plantings yearly.


Problem: Blossom End Rot
Affected Area: Fruit

Description: Round, leathery spot on blossom end of fruit. May be slightly sunken. Affects green as well as ripe fruits, but is more common in ripe fruits Is a physiological disorder caused by water imbalances caused by irregular watering or over-watering especially early in the season. Is very common in heavy clay soils.

Control: Water uniformly rather than allowing the plant to experience wet, dry, wet, dry cycles. Water eggplant wetting the soil to 24" deep. Mulch to stabilize soils against evaporation. Large temperature fluctuations can stimulate it. A change in summer weather patterns may correct the problem.


Problem: Early Blight
Affected Area: Leaf

Description: Begins as brown-to black spots on older leaves. Spots may have yellow borders. Similar spots occur on stems and may girdle the plant. Spots on fruit are on stem end and may be similar.

Control: Plant resistant varieties. Rotate location. Provide adequate spacing for ventilation ? do not crowd plants. Sprinkle irrigation can enhance its spread. Remove and destroy infected plants. * Can use fungicides like Daconil or Maneb at 14-day intervals. Complete coverage including lower leaves is essential for control. * Pesticide use and recommendations for various areas are constantly changing. Check with your County agent for current recommendations.






Eggplant

Tips

For optimum flavor, harvest fruits before they lose their shine.

 

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