Hort 1, Unit 5

Perlite and vermiculite are most likely examples of:

• hydroponics

• organic growing media.

• soil growing media.

• soilless growing media.

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

• 3

• 5

• 7

• 9

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

• Bark

• Perlite

• Peat Moss

• Vermiculite

Which is the best inorganic growing media?

• Bark

• Peat Moss

• Compost

• Vermiculite

The high carbon-to-nitrogen ratio of nondecomposed 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.

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

• Acidic

• Basic

• Alkaline

• 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.

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

• Acidic

• Alkaline

• Basic

• Neutral

Which is the most likely effect of adding perlite to the growing media?

• Decreases drainage

• Increases drainage

• Increases weight

• Makes media acid

Which is a lightweight, inorganic mica mineral capable of absorbing a large amount of water in growing media?

• Bark

• Compost

• Leaf Decay

• Vermiculite