UNIT 3 TURF 435 EXAM QUESTIONS
WITH VERIFIED ANSWERS. A+ GRADE
2025/2026.
What is generally considered a critical (deficiency threshold) tissue concentration of potassium?
a) 0.5% b) 1% c) 1.5% d) 3% e) 4% - ANS c
Which of the following traits is NOT associated with soluble K fertilizers?
a) High salt indices b) Susceptible to leaching loss c) Acid formation d) Good compatibility in
tank mixes e) None of the above - ANS c
Compared to a 12-8-14 fertilizer, fertilizing with which of the following would require half the
material:
a) 6-2-0 b) 24-16-20 c) 6-4-7 d) 24-16-28 e) potassium nitrate - ANS c
Adequate potassium nutrition is essential to turfgrass:
a) synthesis of chlorophyll b) water use and regulation c) canopy color d) disease resistance e)
cellular energy storage - ANS b
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
WITH VERIFIED ANSWERS. A+ GRADE
2025/2026.
What is generally considered a critical (deficiency threshold) tissue concentration of potassium?
a) 0.5% b) 1% c) 1.5% d) 3% e) 4% - ANS c
Which of the following traits is NOT associated with soluble K fertilizers?
a) High salt indices b) Susceptible to leaching loss c) Acid formation d) Good compatibility in
tank mixes e) None of the above - ANS c
Compared to a 12-8-14 fertilizer, fertilizing with which of the following would require half the
material:
a) 6-2-0 b) 24-16-20 c) 6-4-7 d) 24-16-28 e) potassium nitrate - ANS c
Adequate potassium nutrition is essential to turfgrass:
a) synthesis of chlorophyll b) water use and regulation c) canopy color d) disease resistance e)
cellular energy storage - ANS b
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
