Hort 1 Unit 5 Review

What can Vijay add to his soilless mix at planting to add weight and keep his gallon nursery stock from blowing over?

• Bark

• Peat moss

• Perlite

• Vermiculite

Which is the best inorganic growing media?

• Bark

• Compost

• Peat moss

• Vermiculite

While the pH of most commercial horticulture soilless mixes is neutral, the pH of bark, peat moss, and sphagnum moss is:

• Acid

• Alkaline

• Basic

• Neutral

The high carbon-to-nitrogen ratio of non-decomposed sawdust and wood shavings affects nitrogen in growing media by:

• Acting as a fertilizer

• Increasing availability for plant use

• Making it unavailable for plant use

• Stimulating plant growth

Perlite and vermiculite are most likely examples of:

• Hydroponics

• Organic Growing Media

• Soil Growing Media

• Soilless Growing Media

Tamika uses a commercial blend of horticulture soil because she can depend on the pH of the product being:

• Acidic

• Alkaline

• Basic

• Neutral

Wendy has problems getting flowers to grow in one of her flower beds. If she sends a soil sample to the laboratory to get recommendations to correct her problem, she should take cores or slices of soil from:

• All the flower beds

• All the flower beds except the problem one

• The entire lawn

• The problem flower bed

Rory is studying the pH scale. What number represents neutral?

• 3

• 5

• 7

• 9

Compared to other layers of a typical soil profile, the amount of organic matter in the O horizon is:

• About the same

• Less

• More

• None

When indicating or measuring pH, the lower the pH number, the:

• Less acidic

• More acidic

• More alkaline

• More neutral