Landscape Design Question Set 5

Plant diseases caused by rain splashed microorganisms from the ground can be reduced by

• removing all mulch from around and underneath the plant

• applying mulch around and underneath plants

• using only clean topsoil as backfill

• removing all mulch outside the dripline

A post-emergent herbicide is applied

• before the weed seeds germinate

• to broadleaf weeds only

• after the weeds have germinated and emerged from the soil

• just as the weed seeds are germinating

Three types of ground patterns used in landscape design are

• Curved-line, arc-and-tangent, straight-line

• Curved-line, straight-line, squiggle-line

• Curved-line, arc-and-tangent, squiggle-line

• Straight-line, squiggle-line, arc-and-tangent

In most plants, a hormone called auxin is produced by the terminal bud. It moves downward into the shoot and inhibits the growth and development of lateral buds. This is called:

• Apical dominance

• Terminal bud inhibition

• The apex auxin complex

• Lateral dominance

Large nursery pots are measured by the

• inch, and sizes are strictly regulated

• gallon, sizes are strictly regulated

• height, and sizes are strictly regulated

• gallon, the exact size varies by the manufacturer

The three major divisions of a soil profile are:

• topsoil, subsoil, and parent material

• mulch, clay, and parent material

• topsoil, subsoil, and bedrock

• topsoil, clay layer, and rock layer

Horticultural chemicals should be stored in which of the following?

• A refrigerated storage cabinet

• The garage refrigerator

• A cool room such as the basement of a house

• A free-standing, locked building

A friable soil is one that:

• Is high in clay particles

• Is rich in N, P, and K

• Requires humus and fertilizer to be productive

• Is loose and of good structure and texture

A lawn mower with blades parallel to the surface of the ground is called a(n):

• De-thatching mower

• Reel mower

• Rotary mower

• Electric mower

The main objective of root pruning is to

• develop a compact and fibrous root system

• fit the plant in a hole

• encourage normal stem growth

• increase water absorption