TURF 435 FINAL REVIEW QUESTIONS & ANSWERS
Which of the following events best qualifies as foliar fertilization? - Answer -Two hours
after fairways are mowed, spray-application of a contact fungicide + ammonium nitrate
tank mix in a 75 gallon-per-acre (GPA) carrier volume.
Which of the following types of plant nutrient acquisition is not limited to the turfgrass
plant; i.e., involves at least one other organism? - Answer -Biological transport
A 40 lb bag of mono-ammonium phosphate (MAP; 11-52-0) contains how many lbs of
N, P2O5, and K2O? - Answer -4.4 lbs N, 20.8 lbs P2O5, and 0 lbs K2O
A 50 lb bag of di-ammonium phosphate (DAP; 18-46-0) contains how many lbs of N,
P2O5, and K2O? - Answer -9 lbs N, 23 lbs P2O5, and 0 lbs K2O
This primary nutrient is very important in early stages of turfgrass growth. So important,
germinating seedlings deficient in it rarely survive. - Answer -Phosphorus (P)
Often recognized as 'The Father of Agronomy', his 'Law of the Minimum' remains a
fundamental axiom in plant nutrition: - Answer -Justus von Liebig
Which textural component of soil is dominated by secondary minerals? - Answer -Clay
The oldest and most stable form of soil organic matter is: - Answer -humus
Which of the following is NOT a possible fate of organic matter additions to soil? -
Answer -Symbiotic sodium sublimation
Which of the following soil properties contribute most to soil cation exchange capacity
(CEC)? - Answer -Clay content/type and organic matter
The carbon to nitrogen (C:N) ratio of young, fresh organic matter tilled into soil prior to
seeding determines whether: - Answer -there will be gain or loss of plant available N
Two common brand names of inorganic diatomaceous earth mineral amendments are: -
Answer -Axis & Prescription Soil Amendment (PSA)
Soil CEC = 11 meq / 100 g soil
Exchangeable Ca = 5.8 meq / 100 g soil
Exchangeable Mg = 1.9 meq / 100 g soil
Exchangeable K = 0.3 meq / 100 g soil
Exchangeable Na = 0.0 meq / 100 g soil
On the basis of the above-shown routine soil analysis results, what is the base
saturation (%) of the soil? - Answer -72.7 %
, Imagine you submitted a soil sample for routine analysis, and received the following
results:
Soil CEC = 8 meq / 100 g soil
Exchangeable Ca = 5.9 meq / 100 g soil
Exchangeable Mg = 1.4 meq / 100 g soil
Exchangeable K = 0.5 meq / 100 g soil
Exchangeable Na = 0.2 meq / 100 g soil
What is the base saturation (%) of the soil? - Answer -100 %
Imagine you submitted a soil sample to the Pennsylvania State University Agricultural
Analytical Services Laboratory (PSU-AASL) for routine analysis, and received the
following results:
Soil CEC = 7.1 meq / 100 g soil
Exchangeable Ca = 3.6 meq / 100 g soil
Exchangeable Mg = 1.1 meq / 100 g soil
Exchangeable K = 0.1 meq / 100 g soil
Which of the following is the most accurate assessment of the soil base saturation (%)?
- Answer -None of these options
Carl is going to core-aerify (5/8" tine-2"centers) and backfill his sandy tees with an
inorganic amendment. He wants to increase the soil CEC in the top 3" from the current
level of 1.8 meq/100 g soil to 4.0 meq/100 g soil. How many lbs of 'Diatom-POWA!!'
(CEC=48 meq / 100 g) will he need to incorporate per acre of tees? - Answer -48,035
lbs Diatom-POWA!
Availability of the following plant essential nutrient is not affected by soil pH: - Answer -
Chlorine (Cl)
A soil with a pHw of 7 contains 100 times more active acidity than a soil with pHw 5. -
Answer -False
You intended to renovate your lawn to turf-type Tall Fescue (TTTF), submitted a soil
sample, and received a report. Info provided in the report includes:
Total soil CEC = 10 meq / 100 g soil
Soil pHw=5.4
Now Spring is approaching, and you've changed your mind. You now intend to sod
Kentucky Bluegrass. How will the lime recommendation (LR) vary across these two
species? (choose the BEST answer) - Answer -Kentucky Bluegrass will have a greater
LR than TTTF
Please order the following cool-season turfgrass genera by their acidity tolerance (1 =
greatest, 5 = least):
The Bentgrasses
The Wheatgrasses
The Fescues
The Ryegrasses
Which of the following events best qualifies as foliar fertilization? - Answer -Two hours
after fairways are mowed, spray-application of a contact fungicide + ammonium nitrate
tank mix in a 75 gallon-per-acre (GPA) carrier volume.
Which of the following types of plant nutrient acquisition is not limited to the turfgrass
plant; i.e., involves at least one other organism? - Answer -Biological transport
A 40 lb bag of mono-ammonium phosphate (MAP; 11-52-0) contains how many lbs of
N, P2O5, and K2O? - Answer -4.4 lbs N, 20.8 lbs P2O5, and 0 lbs K2O
A 50 lb bag of di-ammonium phosphate (DAP; 18-46-0) contains how many lbs of N,
P2O5, and K2O? - Answer -9 lbs N, 23 lbs P2O5, and 0 lbs K2O
This primary nutrient is very important in early stages of turfgrass growth. So important,
germinating seedlings deficient in it rarely survive. - Answer -Phosphorus (P)
Often recognized as 'The Father of Agronomy', his 'Law of the Minimum' remains a
fundamental axiom in plant nutrition: - Answer -Justus von Liebig
Which textural component of soil is dominated by secondary minerals? - Answer -Clay
The oldest and most stable form of soil organic matter is: - Answer -humus
Which of the following is NOT a possible fate of organic matter additions to soil? -
Answer -Symbiotic sodium sublimation
Which of the following soil properties contribute most to soil cation exchange capacity
(CEC)? - Answer -Clay content/type and organic matter
The carbon to nitrogen (C:N) ratio of young, fresh organic matter tilled into soil prior to
seeding determines whether: - Answer -there will be gain or loss of plant available N
Two common brand names of inorganic diatomaceous earth mineral amendments are: -
Answer -Axis & Prescription Soil Amendment (PSA)
Soil CEC = 11 meq / 100 g soil
Exchangeable Ca = 5.8 meq / 100 g soil
Exchangeable Mg = 1.9 meq / 100 g soil
Exchangeable K = 0.3 meq / 100 g soil
Exchangeable Na = 0.0 meq / 100 g soil
On the basis of the above-shown routine soil analysis results, what is the base
saturation (%) of the soil? - Answer -72.7 %
, Imagine you submitted a soil sample for routine analysis, and received the following
results:
Soil CEC = 8 meq / 100 g soil
Exchangeable Ca = 5.9 meq / 100 g soil
Exchangeable Mg = 1.4 meq / 100 g soil
Exchangeable K = 0.5 meq / 100 g soil
Exchangeable Na = 0.2 meq / 100 g soil
What is the base saturation (%) of the soil? - Answer -100 %
Imagine you submitted a soil sample to the Pennsylvania State University Agricultural
Analytical Services Laboratory (PSU-AASL) for routine analysis, and received the
following results:
Soil CEC = 7.1 meq / 100 g soil
Exchangeable Ca = 3.6 meq / 100 g soil
Exchangeable Mg = 1.1 meq / 100 g soil
Exchangeable K = 0.1 meq / 100 g soil
Which of the following is the most accurate assessment of the soil base saturation (%)?
- Answer -None of these options
Carl is going to core-aerify (5/8" tine-2"centers) and backfill his sandy tees with an
inorganic amendment. He wants to increase the soil CEC in the top 3" from the current
level of 1.8 meq/100 g soil to 4.0 meq/100 g soil. How many lbs of 'Diatom-POWA!!'
(CEC=48 meq / 100 g) will he need to incorporate per acre of tees? - Answer -48,035
lbs Diatom-POWA!
Availability of the following plant essential nutrient is not affected by soil pH: - Answer -
Chlorine (Cl)
A soil with a pHw of 7 contains 100 times more active acidity than a soil with pHw 5. -
Answer -False
You intended to renovate your lawn to turf-type Tall Fescue (TTTF), submitted a soil
sample, and received a report. Info provided in the report includes:
Total soil CEC = 10 meq / 100 g soil
Soil pHw=5.4
Now Spring is approaching, and you've changed your mind. You now intend to sod
Kentucky Bluegrass. How will the lime recommendation (LR) vary across these two
species? (choose the BEST answer) - Answer -Kentucky Bluegrass will have a greater
LR than TTTF
Please order the following cool-season turfgrass genera by their acidity tolerance (1 =
greatest, 5 = least):
The Bentgrasses
The Wheatgrasses
The Fescues
The Ryegrasses
