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