2017 Floriculture Exam Flandreau CDE

Why is it important to maintain long-day conditions during the vegetative development of poinsettias?

• to maintain compact branching

• to promote leaf and root growth

• to shift energy to lateral buds

• to speed the formation of flowers

Growers will dip Easter lily bulbs prior to planting. What pest or disease is a grower trying to control?

• Aphids

• Botrytis

• Bulb mites

• Fungus gnats

What is the process of providing conditions necessary to get bulbs to grow and flower?

• Conditioning

• Forcing

• Scarifying

• stratifying

How long does it normally take to force an Easter lily crop?

• 1000 hours

• 6 weeks

• 9-12 weeks

• 110 to 115 days

What is the life cycle of a perennial?

• one year

• two years

• more than two years

• they never die

How are perennials propagated?

• Sexually

• asexually

• reproductively

• sexually and asexually

What is the rule of thumb for dividing perennials?

• Divide spring flowering perennials in late summer or autumn and summer flowering perennials in early spring

• Divide springs flowering perennials in early spring and summer flowering perennials in late summer or autumn

• Divide both spring flowering perennials and summer flower perennials in July

• Divide both spring flowering perennials and summer flower perennials and summer flower perennials in November

What is needed to force perennials to flower for improved sales?

• no special treatments

• heavy fertilization as the plants are sprouting

• limited watering

• day length, temperature, and juvenility may play a role in forcing depending on the species

At what night temperature are perennials forced?

• 47 degree to 53 F

  (8-12 C)

• 60 - 65 F

  (16-18 C)

• 65-75 F

  (18-24 C)

• 75 to 85 F

  (24-29 C)

When would interrupting the night darkness with lighting from 11:00pm until 2:00am

• to encourage root growth of long day perennials

• to keep short-day perennials

• to promote flowering of short-day perennials

• to stimulate growth of day-neutral perennials