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How to Grow Kohlrabis - Test
Contributed by: Swan
  • 1. What family does kohlrabi belong to?
A) Asteraceae
B) Brassica
C) Solanaceae
D) Cucurbitaceae
  • 2. Kohlrabi is essentially a swollen...
A) Stem
B) Root
C) Leaf
D) Fruit
  • 3. When is the best time to plant kohlrabi for a spring harvest?
A) Late Summer
B) Mid-Winter
C) Early Spring
D) Late Fall
  • 4. What soil pH is ideal for kohlrabi?
A) 4.5-5.5
B) 6.0-7.5
C) 8.0-9.0
D) 9.5-10.5
  • 5. How much sunlight does kohlrabi need daily?
A) 6+ hours
B) 4-5 hours
C) 0 hours
D) 2-3 hours
  • 6. What type of soil is best for kohlrabi?
A) Well-draining, fertile
B) Clay-heavy
C) Rocky
D) Sandy, infertile
  • 7. What is the recommended spacing between kohlrabi plants?
A) 18-24 inches
B) 6-9 inches
C) 3 feet
D) 1 inch
  • 8. How deep should kohlrabi seeds be planted?
A) 1/4 - 1/2 inch
B) 3 inches
C) 2 inches
D) 1 inch
  • 9. What is a common pest that affects kohlrabi?
A) Squash bugs
B) Aphids
C) Tomato hornworms
D) Cabbage worms
  • 10. What is a common disease that affects kohlrabi?
A) Late blight
B) Septoria leaf spot
C) Powdery mildew
D) Clubroot
  • 11. How often should kohlrabi be watered?
A) Only when soil is completely dry
B) Never, relies on rainfall
C) Regularly, keeping soil moist
D) Once a week
  • 12. When is kohlrabi typically ready to harvest?
A) When bulb is 6 inches in diameter
B) When bulb is 2-3 inches in diameter
C) When leaves turn yellow
D) When flowers appear
  • 13. What part of the kohlrabi plant is typically eaten?
A) The flowers
B) The roots
C) The bulb
D) The leaves only
  • 14. How can you prevent kohlrabi from becoming woody?
A) Planting in shade
B) Adding more fertilizer
C) Watering less frequently
D) Harvesting when young and tender
  • 15. What nutrient is important for kohlrabi's bulb development?
A) Nitrogen
B) Phosphorus
C) Calcium
D) Potassium
  • 16. What is a good companion plant for kohlrabi?
A) Rosemary
B) Mint
C) Marigolds
D) Fennel
  • 17. What is the typical lifespan of a kohlrabi plant?
A) Biennial
B) Annual
C) Perennial
D) Depends on the variety
  • 18. How should kohlrabi be stored after harvest?
A) Refrigerated
B) Frozen without blanching
C) Dried in the sun
D) At room temperature
  • 19. What benefit does crop rotation provide for kohlrabi?
A) Increases soil salinity
B) Attracts pollinators
C) Reduces pest and disease buildup
D) Depletes soil nutrients
  • 20. What does 'bolting' refer to in kohlrabi?
A) Root rot
B) Leaf discoloration
C) Bulb cracking
D) Premature flowering
  • 21. What can cause kohlrabi to bolt prematurely?
A) Rich soil
B) Consistent watering
C) Temperature fluctuations
D) Consistent sunlight
  • 22. Which of these is a common kohlrabi variety?
A) Beefsteak
B) Purple Vienna
C) Cantaloupe
D) Roma
  • 23. Why is it important to control weeds around kohlrabi?
A) Weeds attract beneficial insects
B) Weeds improve soil aeration
C) Weeds compete for nutrients and water
D) Weeds help retain soil moisture
  • 24. How can you control cabbage white butterflies?
A) Lack of fertilizer
B) Planting in shade
C) Netting
D) Overwatering
  • 25. Why might kohlrabi bulbs split?
A) Too much fertilizer
B) Lack of nutrients
C) Inconsistent watering
D) Too little sunlight
  • 26. What is a good source of fertilizer for kohlrabi?
A) Motor oil
B) Composted manure
C) Gasoline
D) Bleach
  • 27. How does hilling around the base of the kohlrabi help?
A) Reduces sunlight exposure
B) Discourages root growth
C) Provides support and encourages root growth
D) Attracts pests
  • 28. Which part of the kohlrabi provides the most Vitamin C?
A) Both bulb and leaves
B) The bulb
C) The roots
D) Neither part
  • 29. Which planting method is suitable for Kohlrabi?
A) Only direct sowing
B) Air layering
C) Direct sowing and transplanting
D) Only transplanting
  • 30. What is the impact of boron deficiency in Kohlrabi plants?
A) Hollow stem
B) Stunted growth
C) Root rot
D) Yellow leaves
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