Horticulture Obj 6

Sue uses a fertilizer that promotes early formation and growth of roots and increases the plant's hardiness and disease resistance vigor. Her fertilizer will most likely contain what primary element?

• Boron

• Chlorine

• Phosphorus

• Zinc

Angel selects a fertilizer that will promote good green growth for the leaves and stems of her houseplants. The fertilizer will most likely contain the primary element:

• chlorine

• copper

• nitrogen

• zinc

Which is the analysis of an incomplete fertilizer?

• 5-10-10

• 10-10-10

• 15-0-4

• None of the above

Soluble fertilizers dissolve in:

• air

• ammonia

• hydrogen

• water

What is the function of nitrogen in plant growth?

• makes seed

• produces green color

• produces yellow color in leaves

• helps prevent winterkill

A common symptom of a plant that has a phosphorus deficiency is:

• cupped or curled leaf tips

• purplish color in older leaves

• rotting fruit on young plants

• yellow leaves with green veins

The three primary nutrients necessary for plant growth are:

• boron, calcium, iron

• nitrogen, phosphorus, poatssium

• nitrogen, phosphorus, calcium

• nitrogen, calcium, potassium

If Nina fertilizes and irrigates her plants at the same time, which fertilization method is she using?

• banding

• broadcasting

• fertigation

• perforating

Which elements do plants need in the smallest amounts?

• macronutrients

• micronutrients

• primary elements

• secondary elements

Which group includes micronutrients?

• carbon, hydrogen, oxygen

• Copper, manganese, and zinc

• Nitrogen, phosphorus, potassium

• none of the above