Turf 435 Unit 2 Exam Questions AND Correct Answers
A fertilizer with an average prill size of 1.75mm is designated what size guide number (SGN)?
greens grade
100
13.5
135
none of these choices - ✔✔none of these choices
Application of which of the following fertilizers: 13-0-44 or 46-0-0 or 21-0-0 (circle one) could result in
turfgrass uptake of all three plant-available forms of nitrogen? Please identify three available N forms
and describe associated. transformations (N cycle processes) on the circled fertilizer? - ✔✔46-0-0
3 plant available forms:
1. nitrate (NO3-)
2. ammonium (NH4+)
3. urea (CO(NH2)2)
As discussed, and presented the Basic turfgrass Nutrition packet, turfgrass N requirements are BEST
considered on a lbs per 1000ft^2 per _____ ______ basis. - ✔✔growing month
gaseous loss of ammonia from a turfgrass system - ✔✔D. volatilization
Gaseous loss of nitrate-N from warm, water-logged soil is termed _______ - ✔✔dentrification
If you want to fertilize your fairways with quick release N at a rate of 0.4 lbs N per 1000ft^2, how much
granular urea (46-0-0) would you apply per acre fairways? - ✔✔1 acre = 4356 ft
x= 37.87 lbs of granular urea (46-0-0)
, Indicating leaves of annual bluegrass appear what color when P deficient? - ✔✔Yellowing
Liquid potassium fertilizers that contain ____________ have been shown to enhance turfgrass
resistance to Phylum and Phytopthera disease. - ✔✔phosphonate
loss of nitrate from well-drained, porous soil - ✔✔C. leaching
microbial conversion of NH4 to NO3 - ✔✔B. nitrification
Microbial conversion of organic-N to plant-available N is termed _________ - ✔✔mineralization
Rank the following cool season turf grasses in the order of their general N Requirements (from greatest=
1, to least= 3):
____ Hybrid Kentucky Bluegrass ___ Greeting bentgrass ____fine fescue - ✔✔2 Hybrid Kentucky
Bluegrass
1 Greeting bentgrass
3 fine fescue
Rank the following cool season turf grasses in the order of their general N Requirements (from greatest=
1, to least= 3):
____ rough bluegrass ___ chewing fescue ____ annual bluegrass - ✔✔2 rough bluegrass
3 chewing fescue
1 annual bluegrass
Rank the following synthetic organic fertilizers in the order of their general N Requirements (from
greatest= 1, to least= 3):
____ methylene urea ___ methyl urea ____ urea form - ✔✔2 methylene urea
1 methylol urea
3 urea form
A fertilizer with an average prill size of 1.75mm is designated what size guide number (SGN)?
greens grade
100
13.5
135
none of these choices - ✔✔none of these choices
Application of which of the following fertilizers: 13-0-44 or 46-0-0 or 21-0-0 (circle one) could result in
turfgrass uptake of all three plant-available forms of nitrogen? Please identify three available N forms
and describe associated. transformations (N cycle processes) on the circled fertilizer? - ✔✔46-0-0
3 plant available forms:
1. nitrate (NO3-)
2. ammonium (NH4+)
3. urea (CO(NH2)2)
As discussed, and presented the Basic turfgrass Nutrition packet, turfgrass N requirements are BEST
considered on a lbs per 1000ft^2 per _____ ______ basis. - ✔✔growing month
gaseous loss of ammonia from a turfgrass system - ✔✔D. volatilization
Gaseous loss of nitrate-N from warm, water-logged soil is termed _______ - ✔✔dentrification
If you want to fertilize your fairways with quick release N at a rate of 0.4 lbs N per 1000ft^2, how much
granular urea (46-0-0) would you apply per acre fairways? - ✔✔1 acre = 4356 ft
x= 37.87 lbs of granular urea (46-0-0)
, Indicating leaves of annual bluegrass appear what color when P deficient? - ✔✔Yellowing
Liquid potassium fertilizers that contain ____________ have been shown to enhance turfgrass
resistance to Phylum and Phytopthera disease. - ✔✔phosphonate
loss of nitrate from well-drained, porous soil - ✔✔C. leaching
microbial conversion of NH4 to NO3 - ✔✔B. nitrification
Microbial conversion of organic-N to plant-available N is termed _________ - ✔✔mineralization
Rank the following cool season turf grasses in the order of their general N Requirements (from greatest=
1, to least= 3):
____ Hybrid Kentucky Bluegrass ___ Greeting bentgrass ____fine fescue - ✔✔2 Hybrid Kentucky
Bluegrass
1 Greeting bentgrass
3 fine fescue
Rank the following cool season turf grasses in the order of their general N Requirements (from greatest=
1, to least= 3):
____ rough bluegrass ___ chewing fescue ____ annual bluegrass - ✔✔2 rough bluegrass
3 chewing fescue
1 annual bluegrass
Rank the following synthetic organic fertilizers in the order of their general N Requirements (from
greatest= 1, to least= 3):
____ methylene urea ___ methyl urea ____ urea form - ✔✔2 methylene urea
1 methylol urea
3 urea form
