How to Cultivate Rambutans
  • 1. What climate is best suited for rambutan cultivation?
A) Temperate
B) Tropical
C) Alpine
D) Arid
  • 2. What is the ideal temperature range for rambutan growth?
A) 0-10°C
B) 10-20°C
C) 22-35°C
D) 35-45°C
  • 3. What type of soil is preferred for rambutan trees?
A) Well-drained, sandy loam
B) Heavy clay
C) Rocky
D) Pure sand
  • 4. What is the recommended pH range for rambutan soil?
A) 7.0-8.0
B) 8.5-9.5
C) 5.5-6.5
D) 3.0-4.0
  • 5. How are rambutan trees typically propagated?
A) Layering
B) Cutting
C) Grafting
D) Direct seeding
  • 6. What is the best time of year to plant rambutan trees?
A) Early rainy season
B) Winter
C) Late rainy season
D) Dry season
  • 7. What is the recommended spacing between rambutan trees?
A) 1-2 meters
B) 10-12 meters
C) 2-3 meters
D) 5-7 meters
  • 8. What is the purpose of pruning rambutan trees?
A) To attract pests
B) To prevent flowering
C) To stunt growth
D) To shape the tree and improve airflow
  • 9. What is a common disease that affects rambutan trees?
A) Powdery mildew
B) Citrus canker
C) Potato blight
D) Rose black spot
  • 10. What is a common pest that affects rambutan trees?
A) Aphids
B) Caterpillars
C) Beetles
D) Fruit flies
  • 11. How often should rambutan trees be fertilized?
A) Once every 5 years
B) Several times a year
C) Never
D) Once a year
  • 12. What type of fertilizer is generally recommended for rambutan trees?
A) High phosphorus fertilizer
B) Balanced NPK fertilizer
C) High nitrogen fertilizer
D) High potassium fertilizer
  • 13. When do rambutan trees typically begin to bear fruit?
A) Never
B) Immediately after planting
C) 3-5 years after planting
D) 10-15 years after planting
  • 14. What indicates that a rambutan fruit is ripe?
A) Bright red skin color
B) Small size
C) Hard fruit texture
D) Green skin color
  • 15. How should rambutan fruits be harvested?
A) By shaking the tree
B) Using pruning shears
C) By pulling the fruits
D) Letting them fall to the ground
  • 16. What is the shelf life of rambutan fruits after harvest?
A) Indefinitely
B) A few days
C) Several months
D) Several weeks
  • 17. Why is proper drainage important for rambutan trees?
A) To encourage rapid growth
B) To attract beneficial insects
C) To prevent root rot
D) To increase fruit sweetness
  • 18. What is the benefit of mulching around rambutan trees?
A) Increases soil temperature drastically
B) Depletes soil nutrients
C) Attracts pests
D) Conserves moisture and suppresses weeds
  • 19. What is the role of bees in rambutan cultivation?
A) Soil aeration
B) Pollination
C) Water distribution
D) Pest control
  • 20. What is the purpose of windbreaks in rambutan orchards?
A) To attract birds
B) To block sunlight
C) To increase humidity
D) To protect trees from strong winds
  • 21. What type of water is best for irrigating rambutan trees?
A) Clean, fresh water
B) Saltwater
C) Extremely acidic water
D) Sewage water
  • 22. Why is regular weeding important around rambutan trees?
A) To attract beneficial insects
B) To increase soil erosion
C) To reduce competition for nutrients and water
D) To provide shelter for pests
  • 23. How does humidity affect rambutan fruit production?
A) High humidity is generally beneficial
B) High humidity always causes disease
C) Humidity has no effect
D) Low humidity is beneficial
  • 24. What is the term for removing water sprouts from a rambutan tree?
A) Scioning
B) Budding
C) Girdling
D) Suckering
  • 25. What is the best way to protect rambutan fruits from birds?
A) Poison
B) Mirrors
C) Netting
D) Loud noises
  • 26. What is the impact of excessive rainfall on rambutan trees?
A) Increases fruit sweetness
B) Deters pests
C) Always beneficial for growth
D) Can lead to fruit cracking and fungal diseases
  • 27. What role does calcium play in rambutan tree health?
A) Promotes flowering
B) Attracts pollinators
C) Strengthens cell walls
D) Enhances fruit color
  • 28. What is a sign of nitrogen deficiency in rambutan trees?
A) Rapid growth
B) Dark green leaves
C) Excessive flowering
D) Yellowing leaves
  • 29. What is the approximate lifespan of a rambutan tree?
A) 1-2 years
B) 50-60 years
C) 100+ years
D) 5-10 years
  • 30. Besides fruit, what else can the rambutan tree be used for?
A) Timber
B) Perfumes
C) Dyes
D) Nothing
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