Common Pests and Diseases Affecting Purple Kohlrabi

• Aphids: These small, soft-bodied insects feed on the sap of kohlrabi plants, causing stunted growth and distorted leaves. They can be controlled by introducing natural predators or using insecticidal soaps.
• Cabbage Worms: The larvae of cabbage white butterflies, cabbage worms chew on the leaves of purple kohlrabi, leaving behind large holes. Handpicking and using organic insecticides can help manage their population.
• Slugs and Snails: These slimy pests feed on the leaves and stems of kohlrabi, causing extensive damage. Creating barriers, such as copper tape, and removing hiding places can help control their presence.
• Flea Beetles: These small, jumping beetles chew tiny holes in the leaves of kohlrabi, resulting in a characteristic “shot-hole” appearance. Row covers and insecticides can be used to prevent infestations.

Diseases:

• Clubroot: This soil-borne disease causes swelling and distortion of the roots, leading to stunted growth and wilting of the plant. Crop rotation and soil amendments can help manage clubroot.
• Downy Mildew: A fungal disease that appears as yellowish patches on the leaves, downy mildew can cause defoliation and reduced yield. Fungicides and proper plant spacing can help prevent its spread.
• Black Rot: This bacterial disease causes blackened veins and yellowing of leaves, eventually leading to plant death. Crop rotation and removal of infected plants are essential for controlling black rot.
• Powdery Mildew: A fungal infection that forms a white, powdery coating on the leaves, powdery mildew can hinder photosynthesis and weaken the plant. Fungicides and proper air circulation can help prevent its occurrence.

By being aware of these common pests and diseases, purple kohlrabi growers can take proactive measures to protect their crops and ensure healthy yields.

Keywords: leaves, kohlrabi, mildew, diseases, purple, cabbage, prevent, disease, powdery