NATIONAL FFA NURSERY/LANDSCAPE CDE GENERAL KNOWLEDGE EXAM 2017 (Questions 26-50)

Front

What was Waylon's net profit on his crop of 1500 junipers sold at $7.25 per pot, having invested $4.32 per pot?

Back

The net profit is calculated as (Selling Price - Cost Price) * Quantity = ($7.25 - $4.32) * 1500 = $4395.

Front

What safety measure should Heather take to remove a piece of wire wrapped around her rotary mower blade? Options: A. tilt the mower back at 30 to 50 degrees. B. remove the spark plug wire. C. readjust the cutting height. D. remove the air filter.

Back

remove the spark plug wire.

Front

A good rule of thumb for mowing grass is to:

Back

remove no more than 1/3 of the leaf blade at any one time.

Front

Which of these is an LD‐50 rating that would be most toxic to humans? A. 43, B. 19, C. W-93, D. 3000

Back

19

Front

The principles of xeriscaping would be best exemplified by a homeowner who: A. installs a sprinkler system that operates on a timer. B. replaces non-native ornamentals with native plants that do not require irrigation. C. lowers the lawn mower blade to reduce the height of the turf. D. adjusts the pH of the soil to a desirable level for the turf being grown.

Back

replaces non-native ornamentals with native plants that do not require irrigation.

Front

A gasoline and oil mix at a ratio in the range of 20:1 to 50:1 is most likely intended for a:

Back

Two-cycle engine

Front

Which of these helps keep a retaining wall from collapsing from the force of the soil behind the wall? A. Deadmen, B. Wall bolts, C. Lag screws and wall bolts, D. The gravel bed the wall is set upon

Back

Deadmen

Front

What method of turf establishment is described by chopping pieces of Bermuda sod into sections of stems containing one or more nodes, distributing them over the site, and covering lightly by disking and rolling?

Back

Stolonizing

Front

The purpose of the edging trench cut between the Bermudagrass and pine straw mulch is to help:

Back

prevent stolons and rhizomes from invading the mulch bed.

Front

Which of these is NOT a benefit of a mulched area around established landscape trees? A. Mulch around trees protects the base of the tree from mowers. B. Mulch provides a neat appearance when properly maintained. D. Mulch around trees increases the overall speed of mowing.

Back

Mulch around trees provides a barrier to insects and disease.