20-25 #2

1.

1 point

Which terms describes herbicides that kill most plants?

Translocated herbicide

Non-selective herbicide

Selective herbicide

Contact spray

2.

1 point

Which term refers to herbicides applied to the entire treatment area?

Soil incorporated application

Spot treatment

Broadcast application

Post-emergent herbicide

3.

1 point

What is step 2c in the diagnostic process?

Read, refer to reference materials describing similar signs and symptoms.

Compare the signs and symptoms you are seeing in the plant with what you are reading about in the reference materials.

Evaluate effective management options.

Look at the plant, describing the signs and symptoms.

4.

1 point

Which statement best defines a sign?

Yellowing of leaves

Changes in the plant’s growth or appearance in response to damaging factors

The presence of an actual organism or direct evidence of the causal factor

What is wrong with a plant

5.

1 point

Which term refers to the reproductive structures of fungi, including mushrooms, pycnidia, and rusts?

Canker

Mycelium

Gall

Fruiting bodies

6.

1 point

Which is INCORRECT about controlling weeds by cultivation/tilling?

Most common weed control method

Tilling/cultivating may actually propagate many perennial weeds

Also brings weed seeds to the surface for germination

Deep tilling is necessary to kill weed roots

7.

1 point

Which term refers to weeds declared by state or county statute as a threat to agriculture and naturalized areas?

Garden weeds

Illegal weeds

Common weeds

Noxious weeds

8.

1 point

Which is INCORRECT about controlling weeds by cultivation/tilling?

Effective on 50% of annuals and biennials

Also brings weed seeds to the surface for germination

Deep tilling can damage crop roots

Tilling/cultivating may actually propagate many perennial weeds

9.

1 point

Which is INCORRECT about managing weeds with mulch?

Generally, one inch of mulch effectively controls weeds.

Mulching may not effectively control established perennial weeds.

Mulching is a great management tool to prevent weed seed germination from the soil.

When landscape fabric is used with a wood chip or rock mulch, weed seeds that blow in will germinate above the fabric.

10.

1 point

Which term is a progressive decrease in plant vigor?

Decline

Dieback

Scorch

Blight

11.

1 point

Which term is spots or lesions on the leaf?

Dieback

Leaf spot

Leaf scorch

Necrosis

12.

1 point

Which is INCORRECT about controlling weeds by cultivation/tilling?

Deep tilling is necessary to kill weed roots

Also brings weed seeds to the surface for germination

Tilling/cultivating may actually propagate many perennial weeds

Most common weed control method

13.

1 point

Which order (with chewing mouthparts and shell-like front wings) is illustrated in the picture?

Homoptera (aphids, leafhoppers, scale)

Coleoptera (beetles)

Hymenoptera (bees, wasps, hornets, sawflies)

Diptera (flies)

14.

1 point

Which is NOT a major source of weed seeds in the home landscape?

Brought in by birds and other wildlife

Allowing weeds in the garden to go to seed

Disseminated from neighboring plants

Brought in with manures, compost and other soil amendments

15.

1 point

Which terms describes herbicides that only kill a group of plants, like a broadleaf dandelion spray used on lawns?

Translocated herbicide

Selective herbicide

Contact spray

Pre-emergent herbicide

16.

1 point

Which is INCORRECT about weed management techniques?

Mowing a Kentucky bluegrass short encourages weeds.

Mowing a naturalized area or lower maintenance area of the yard effective manages the unsightly appearance and fire hazard.

Frequent irrigation encourages crop growth, suppressing weeds.

Many common garden weeds will not survive in a frequently mowed lawn.