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How to Cultivate Plums - Exam
Contributed by: Webster
  • 1. What type of climate is generally best for growing plums?
A) Temperate
B) Tropical
C) Arctic
D) Desert
  • 2. What is the ideal soil pH for plum trees?
A) 8.5-9.5
B) 6.0-7.0
C) 4.0-5.0
D) 7.5-8.5
  • 3. Plum trees need how many hours of chill hours (below 45°F) for proper fruit production?
A) 1000+
B) None
C) Varies by variety
D) 0-100
  • 4. Which of the following is the MOST important factor when choosing a plum tree variety?
A) Climate suitability
B) Fruit color
C) Tree height
D) Leaf shape
  • 5. What is the best time of year to plant bare-root plum trees?
A) Late winter/early spring
B) Mid-summer
C) Late fall
D) Anytime
  • 6. What spacing is recommended for planting standard-sized plum trees?
A) 2-3 feet
B) 15-20 feet
C) 5-10 feet
D) 30-40 feet
  • 7. What is the primary purpose of staking a young plum tree?
A) Provide support
B) Increase fruit yield
C) Attract pollinators
D) Prevent diseases
  • 8. During the first year, how often should a newly planted plum tree be watered?
A) Regularly, when topsoil is dry
B) Daily
C) Only during rainfall
D) Once a month
  • 9. Why is it important to prune plum trees?
A) To make the tree look aesthetically pleasing only
B) To promote air circulation and fruit production
C) To stunt growth
D) To discourage fruit production
  • 10. What type of pruning cut encourages new growth outward?
A) Cutting to an outward-facing bud
B) Cutting to an inward-facing bud
C) Removing all buds
D) Cutting randomly
  • 11. What is 'thinning' in the context of plum tree care?
A) Removing branches
B) Removing excess fruit
C) Adding fertilizer
D) Removing excess leaves
  • 12. Why is thinning plums important?
A) To attract more birds
B) To increase the number of plums
C) To prevent the tree from growing too tall
D) To improve fruit size and quality
  • 13. Which of the following is a common pest of plum trees?
A) Butterflies
B) Plum curculio
C) Earthworms
D) Ladybugs
  • 14. Which of the following is a common disease of plum trees?
A) Black spot
B) Brown rot
C) Green leaf disease
D) Powdery mildew
  • 15. What is one organic method to control plum curculio?
A) Bleach spray
B) Gasoline
C) Kaolin clay spray
D) Ignoring the problem
  • 16. What type of fertilizer is generally recommended for plum trees?
A) Weed killer
B) High nitrogen fertilizer
C) Balanced fertilizer
D) No fertilizer
  • 17. When should you fertilize plum trees?
A) Mid-summer
B) Late fall
C) Early spring
D) Winter
  • 18. What is the purpose of mulching around a plum tree?
A) Suffocate the roots
B) Retain moisture and suppress weeds
C) Prevent pollination
D) Attract pests
  • 19. What type of mulch is best for plum trees?
A) Plastic mulch
B) Organic mulch like wood chips
C) Gravel
D) Rocks
  • 20. How can you tell when a plum is ripe?
A) Hard as a rock
B) Completely green
C) Slightly soft to the touch and easily pulls from the tree
D) Falls off the tree easily
  • 21. What is grafting?
A) Removing dead branches
B) Watering deeply
C) Adding fertilizer
D) Joining two plants together
  • 22. Why is grafting sometimes used in plum cultivation?
A) To combine desirable traits
B) To kill the tree
C) To make the tree taller
D) To prevent fruit production
  • 23. What does 'self-pollinating' mean for a plum tree?
A) It's resistant to all pests
B) It only produces green plums
C) It needs constant watering
D) It can produce fruit without another plum tree
  • 24. What is cross-pollination?
A) Pollination between two different plum varieties
B) Pollination between a plum and an apple tree
C) Pollination using only wind
D) Self-pollination
  • 25. How can you improve pollination for plum trees?
A) Keeping bees away
B) Removing all flowers
C) Spraying pesticides
D) Planting pollinator-attracting plants
  • 26. What is the first step you should take if you notice a disease on your plum tree?
A) Over-water the tree
B) Ignore it and hope it goes away
C) Identify the disease
D) Immediately cut down the tree
  • 27. What is the best way to store harvested plums?
A) In direct sunlight
B) Frozen immediately
C) Refrigerated
D) In a warm, humid place
  • 28. How long does it typically take for a newly planted plum tree to produce fruit?
A) 1 year
B) Never
C) 3-6 years
D) 10+ years
  • 29. What is the purpose of dormant oil spray on plum trees?
A) To speed up fruit production.
B) To attract more birds.
C) To control overwintering pests and diseases.
D) To make the leaves shiny.
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