How to Cultivate Watermelons
  • 1. What soil pH is ideal for watermelons?
A) 4.5-5.5
B) 6.0-6.8
C) 7.0-8.0
D) 8.5-9.5
  • 2. Watermelons are members of what plant family?
A) Solanaceae
B) Fabaceae
C) Cucurbitaceae
D) Brassicaceae
  • 3. What is the ideal soil temperature for watermelon seed germination?
A) 60-70°F
B) 70-90°F
C) 50-60°F
D) 90-100°F
  • 4. Which of these is NOT a common watermelon disease?
A) Late Blight
B) Anthracnose
C) Fusarium Wilt
D) Gummy Stem Blight
  • 5. How much space should be given between watermelon plants in a row?
A) 2-3 feet
B) 1 foot
C) 6-8 inches
D) 4-5 feet
  • 6. What type of pollination do watermelons require?
A) Self-pollination
B) Insect pollination
C) Water pollination
D) Wind pollination
  • 7. What is a good way to improve watermelon flavor?
A) Maintain consistent watering
B) Plant in shady areas
C) Over-fertilize with nitrogen
D) Prune vines heavily
  • 8. What is a common indicator that a watermelon is ripe?
A) The watermelon is bright green.
B) The watermelon is very hard.
C) The watermelon sounds hollow when tapped.
D) The tendril closest to the fruit is brown and dry.
  • 9. What fertilizer ratio is generally recommended for watermelons during fruit development?
A) Low nitrogen, high phosphorus and potassium
B) No fertilizer is needed
C) High nitrogen, low phosphorus and potassium
D) Balanced nitrogen, phosphorus and potassium
  • 10. What is 'hardening off'?
A) Pruning watermelon plants aggressively.
B) Gradually acclimating seedlings to outdoor conditions.
C) Allowing watermelons to rot on the vine.
D) Applying excessive amounts of fertilizer.
  • 11. Which of the following is a common watermelon pest?
A) Ladybugs
B) Earthworms
C) Aphids
D) Praying Mantis
  • 12. What is the benefit of using black plastic mulch when growing watermelons?
A) Cools the soil and promotes weed growth
B) Warms the soil and suppresses weeds
C) Provides extra nutrients to the plants
D) Attracts pollinators
  • 13. How often should watermelons be watered?
A) Regularly, especially during fruit development
B) Never water them
C) Only when the leaves start to wilt
D) Once a week
  • 14. What is 'sunscald'?
A) Damage to the fruit caused by excessive sun exposure
B) A fungal disease that affects watermelon leaves
C) A genetic mutation that causes striped watermelons
D) A type of fertilizer burn
  • 15. Which of these watermelon varieties is seedless?
A) Tetraploid
B) Triploid
C) Diploid
D) Haploid
  • 16. What is the purpose of pinching off the lateral shoots of a watermelon plant?
A) To direct energy to the main vine and fruit development
B) To control pests
C) To encourage leaf growth
D) To prevent the plant from flowering
  • 17. How deep should watermelon seeds be planted?
A) 1 inch
B) 2 inches
C) 3 inches
D) 1/4 inch
  • 18. Why is crop rotation important for watermelon cultivation?
A) To increase the size of the watermelons
B) To attract pollinators
C) To prevent soilborne diseases and nutrient depletion
D) To control weeds
  • 19. What is a good companion plant for watermelons?
A) Cabbage
B) Broccoli
C) Marigolds
D) Tomatoes
  • 20. How long does it typically take for watermelons to mature from planting?
A) 100-120 days
B) 70-90 days
C) 30-45 days
D) 50-60 days
  • 21. What is a common sign of overwatering watermelons?
A) Yellowing leaves
B) Stunted growth
C) Leaf curling
D) Fruit cracking
  • 22. Which type of soil is best for growing watermelons?
A) Sandy loam
B) Silt
C) Peat
D) Clay
  • 23. What tool is best for harvesting watermelons?
A) Hoe
B) Sharp knife or pruning shears
C) Shovel
D) Trowel
  • 24. What is the benefit of planting watermelons on mounds or hills?
A) Improved drainage and soil warming
B) Increased sun exposure
C) Reduced weed growth
D) Easier harvesting
  • 25. How can you protect watermelon seedlings from cutworms?
A) Apply fertilizer directly to the stems
B) Water the seedlings excessively
C) Use collars around the stems
D) Remove all leaves from the seedlings
  • 26. What is the best time of day to water watermelons?
A) Midday
B) Early morning
C) Late afternoon
D) Evening
  • 27. Which mineral deficiency can cause blossom-end rot in watermelons?
A) Nitrogen
B) Potassium
C) Calcium
D) Phosphorus
  • 28. What does 'days to maturity' on a seed packet refer to?
A) The number of days the seeds need to germinate
B) The shelf life of the seeds
C) The maximum size of the watermelon
D) The estimated time from planting to harvest
  • 29. What is the primary function of potassium in watermelon growth?
A) Fruit development and sugar production
B) Leaf growth
C) Root development
D) Disease resistance
  • 30. Why is it important to avoid overhead watering of watermelons?
A) It can promote fungal diseases
B) It can attract pests
C) It can damage the delicate vines
D) It can wash away the fertilizer
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