Score ______________ / 30

Quiz #5

Multiple choice. (8 pts.)

Please read these carefully. Only one response correctly answers the question, or completes the statement. Circle the corresponding letter (a, b, c, d, or e).

1. To avoid future problems of compaction, what is the minimum sand content for a turf soil?

a. 50%

b. 75%

c. 90%

d. 95%

e. 99%

2. If a lawn is to be mowed to 3 inches, it should be mowed when it is how high?

a. 3.5 inches

b. 4 inches

c. 4.5 inches

d. 6 inches

e. none of the above

3. Thatch is produced largely from:

a. leaf clippings

b. roots

c. stolons and rhizomes

d. seed stalks

e. none of the above

4. The most effective method for dealing with thatch, after it is a problem, is:

a. aerification

b. verticutting

c. topdressing

d. growth regulators

e. none of the above

Short answer. (22 pts.)

5. For three methods of turf fertilization, list some principal advantages and disadvantages (e.g., inexpensiveness, accuracy, dependency on precise irrigation, segregation of different particles, inaccuracy, and potential for gaps in distribution (6 pts.)

6. List five things to alleviate the problem of shading in turfgrass. (5 pts)

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7. Some turfgrasses are propagated vegetatively, others from seed. What characteristics and limitations of these two methods determine whether a species is propagated one way or the other? (5 pts.)

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8 What are the effects of mowing on turfgrass communities? If an effect is only associated with improper mowing, place the word "improper" in parentheses.

(6 pts.)

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