TURF 435 EXAM 1 – 2 QUESTIONS & ANSWERS
Which of the following elements is NOT a base cation?
a) Cobalt b) Sodium c) Calcium d) Potassium e) Magnesium - Answer -Cobalt
Which of the following is considered a plant essential micronutrient?
a) Iodine b) Antimony c) Phosphorus d) Arsenic e) None of these choices - Answer -
None of these choices
Which of the following is the BEST piece of advice to follow when considering a foliar
fertilizer application to creeping bentgrass putting greens in mid-August?
a) Add several biostimulants to the tank
b) Try to make the foliar fertilizer application around 1 pm
c) Apply less than 0.4 lbs nutrients per 1000 ft2
d) Apply less than 0.2 lbs nutrients per 1000 ft2
e) Spontaneously formulate a 'witch's brew' with as many old, funky fungicides you can
find - Answer -Apply less than 0.2 lbs nutrients per 1000 ft2
When managing creeping bentgrass putting greens, which of the following soil chemical
parameters would you want to exceed a level of 10?
a) soil pH
b) ECe (in mS/cm)
c) ESP (%)
d) CEC (in meq / 100 g soil)
e) none of the above - Answer -CEC (in meq / 100 g soil)
, A good rule of thumb to follow when applying the soil lab lime recommendation to raise
the soil pH of the upper 6" of the profile in a mature, thatchy, and acidic turfgrass lawn is
to
a) broadcast lime over the top like fertilizer
b) invest in an acid injection system
c) mechanically cultivate the lawn prior to applying the lime
d) wait for your soil pH to raise itself
e) None of the above ideas are any good at all - Answer -broadcast lime over the top
like fertilizer
Which of the following clay minerals typically possesses the greatest CEC?
a) humus
b) kaolinite
c) quartz
d) smectite
e) calcite - Answer -Humus
Which of the following is NOT a possible fate of carbon-rich organic matter deposits to
soil?
a) Osmotic conversion to unobtainium
b) Oxidation to CO2
c) Transformation into humus
d) Assimilation into microbial biomass
e) All are possible fates of OM deposition - Answer -Osmotic conversion to unobtainium
An acidic soil with an ESP of 18%, a SAR value of 15, and an ECp of 4.8 mS/cm is
classified as
a) sodic
b) normal
c) saline
d) saline-sodic
e) sodic, possibly saline-sodic - Answer -saline-sodic
When constructing new greens, and considering an organic amendment for blending
into the sand rootzones (offsite, prior to delivery), the two most important factors in
organic amendment selection are:
a) odor & C:N ratio
b) quality control & C:N ratio
c) odor & CEC
d) all of these choices - Answer -quality control & C:N ratio
Which of the following nutrient acquisition mechanisms is inhibited at cooler soil temps?
a) Diffusion
b) Biological transport
c) Mass flow
Which of the following elements is NOT a base cation?
a) Cobalt b) Sodium c) Calcium d) Potassium e) Magnesium - Answer -Cobalt
Which of the following is considered a plant essential micronutrient?
a) Iodine b) Antimony c) Phosphorus d) Arsenic e) None of these choices - Answer -
None of these choices
Which of the following is the BEST piece of advice to follow when considering a foliar
fertilizer application to creeping bentgrass putting greens in mid-August?
a) Add several biostimulants to the tank
b) Try to make the foliar fertilizer application around 1 pm
c) Apply less than 0.4 lbs nutrients per 1000 ft2
d) Apply less than 0.2 lbs nutrients per 1000 ft2
e) Spontaneously formulate a 'witch's brew' with as many old, funky fungicides you can
find - Answer -Apply less than 0.2 lbs nutrients per 1000 ft2
When managing creeping bentgrass putting greens, which of the following soil chemical
parameters would you want to exceed a level of 10?
a) soil pH
b) ECe (in mS/cm)
c) ESP (%)
d) CEC (in meq / 100 g soil)
e) none of the above - Answer -CEC (in meq / 100 g soil)
, A good rule of thumb to follow when applying the soil lab lime recommendation to raise
the soil pH of the upper 6" of the profile in a mature, thatchy, and acidic turfgrass lawn is
to
a) broadcast lime over the top like fertilizer
b) invest in an acid injection system
c) mechanically cultivate the lawn prior to applying the lime
d) wait for your soil pH to raise itself
e) None of the above ideas are any good at all - Answer -broadcast lime over the top
like fertilizer
Which of the following clay minerals typically possesses the greatest CEC?
a) humus
b) kaolinite
c) quartz
d) smectite
e) calcite - Answer -Humus
Which of the following is NOT a possible fate of carbon-rich organic matter deposits to
soil?
a) Osmotic conversion to unobtainium
b) Oxidation to CO2
c) Transformation into humus
d) Assimilation into microbial biomass
e) All are possible fates of OM deposition - Answer -Osmotic conversion to unobtainium
An acidic soil with an ESP of 18%, a SAR value of 15, and an ECp of 4.8 mS/cm is
classified as
a) sodic
b) normal
c) saline
d) saline-sodic
e) sodic, possibly saline-sodic - Answer -saline-sodic
When constructing new greens, and considering an organic amendment for blending
into the sand rootzones (offsite, prior to delivery), the two most important factors in
organic amendment selection are:
a) odor & C:N ratio
b) quality control & C:N ratio
c) odor & CEC
d) all of these choices - Answer -quality control & C:N ratio
Which of the following nutrient acquisition mechanisms is inhibited at cooler soil temps?
a) Diffusion
b) Biological transport
c) Mass flow
