Back to Basics Soil Fertility Quiz-Summer 2003

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Summer 2003 Fertilizer Quiz

1. Which of the following is an essential macronutrient?
A. Potassium (K)
B. Boron (B)
C. Manganese (Mn)

2. Let's see who knows their soil minerals…Can K be present in the soil without being available?
A. Yes
B. No

3. Of the 2.5 million soil samples taken in North America recently, what percentage rated "average or below average" in soil test K?
A. 12%
B. 33%
C. 43%
D. 100%

4. Potassium plays a role in which of the following plant metabolic functions?
A. Enzyme activation
B. Water uptake
C. N fixation in legumes
D. All of the above

5. Ready for a geography test? Soil fertility in some regions of the United States is declining rapidly. K removal in harvest crops is outpacing nutrient and manure additions. Which state do you think is in the worst shape?
A. Wyoming
B. New Jersey
C. Florida

6. True or False. K is the most important component of plant structures such as leaves.
A. True
B. False

7. Biochemistry anyone? Enzymes regulate plant growth and reproduction. How many enzymes do you think K can activate?
A. 6
B. 16
C. 60
D. 60,000

8. K deficiencies leave plants weaker than usual. In fact, K-deficient plants are less resistant to _____.
A. Drought
B. Cold temperatures
C. Hot temperatures
D. All of the above

9. K is known as the _____ nutrient.
A. Quantity
B. Quality
C. Quasi
D. Quirky

10. Which of these is an important mineral source of K?
A. Langbeinite
B. Lizardite
C. Limestone

11. Which of the following can K do?
A. Put the sugar in apples
B. Put the starch in potatoes
C. Put the plump in grain
D. All of the above

12. Which of the following can K help prevent?
A. Slug assaults
B. Corn borer
C. Neither

13. How did potash get its name?
A. As one of the first elements discovered, that was its name before the period table was developed
B. It is the Latin word for "macronutrient"
C. From wood burned in large pots so that the ash may be used as a fertilizer

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