Unit 5 Review

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

• Acidic

• Alkaline

• Basic

• Neutral

Perlite and vermiculite are most likely examples of:

• Hydroponics

• Organic growing media

• Soil growing media

• Soilless growing media

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

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

• Bark

• Peat moss

• Perlite

• Vermiculite

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

Clayey textured soils are characterized by:

• Being loose and single grain

• Having high moisture-holding capacity

• Having large soil particles

• Having low moisture-holding capacity

The most desirable soil for non container outdoor plant production is:

• Clay

• Loam

• Sand

• Silt

Where measuring pH, the higher the soil pH number, the:

• Less alkaline

• More acidic

• More alkaline

• More neutral

A soil test report with a pH of 7.2 is:

• Extremely acid

• Extremely alkaline

• Mildly acid

• Mildly alkaline

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

• Bark

• Compost

• Leaf mold

• Vermiculite