2014 National FFA Floriculture General Knowledge Exam

The optimum range for most crops growing in a soilless medium is ___ - ___, because in this range micronutrients are ___ enough to satisfy plant needs without becoming so ___ as to be toxic.

• 7.35, 7.45, soluble, soluble

• 5.8, 6.4, soluble, soluble

• 5.14, 5.75, insoluble, insoluble

• 7.35, 7.45, insoluble, soluble

High humidity in the greenhouse causes plugs to ___ and be soft due to lack of ___ uptake.

• stretch, oxygen

• shrink, nitrogen

• shrink, calcium

• stretch, calcium

___ can become a problem when plugs are older and the plant canopy is tight.

• Botrytis

• Lobularia

• Vinca

• Celosia

Snapdragons can be stored for three to four days, dry or in water, at 40°F (4°C).

• True

• False

Campanula carpatica is an important ________ flowering pot crop for a number of European growers.

• Fall

• Winter

• Summer

• Springs

You cannot change your poinsettia crop while it is growing based on the type of fertilizer you use.

• True

• False

Gladioli species and the cultivars produce a multi-flowered inflorescence that can contain ______ to ______ florets.

• 2, 9

• 10, 25

• 3, 13

• 26,35

________, or satin flower has been transformed from a unique and uncommon garden plant into a dependable cut flower for greenhouse and field production and for pot plant production.

• Godetia
• Gomphrena

• Gladiolus

• Geranium

Rudbeckia fulgida is also known as ________.

• African violet

• Rosemary

• Black-eyed Susan

• Azalea

Azaleas are vegetatively propagated from stem or tip cuttings harvested from actively growing plants. While rooting is relatively easy, growing a “florist” azalea takes as long as ____ to ____.

• 12, 24 months

• 2, 3 months

• 2, 3 years

• 1, 2 years