CSES 2040- Exam 3 UPDATED ACTUAL Questions and CORRECT Answers
Measurement of the degree to which the ESP
CEC is occupied by sodium
Which is the description of a saline soil? high in all salts
Soils that are high in sodium are prone to dispersion
A sodic soil ESP > 15%
What do we add to flocculate soils? calcium
Why is water that is high in bicarbonates an makes effects of Na worse - takes Ca/Mg out of solution
issue?
T/F An Auburn University soil test has a False
calibrated and effective soil test for
nitrogen
The Haber-Bosch process industrialized fixation of atmospheric N
Who regulates fertilizers and the the state
guaranteed analysis on fertilizer labels?
Saturated paste extracts (for soil) are most EC and pH
correctly used for
A grower took their soil samples to a depth 40
of 6 inches. The results say that they have
20 ppm extractableK. How much is that in
pounds per acre?
When fertilizer is applied in a band directly pop-up
on the seed it is called:
The type of organic matter that still would litter
have identifiable leaves, stems etc
Greatest human source of emitted carbon burning fossil fuel
dioxide to the atmosphere is?
, How do VAM help plants survive stress? fungal mycelium essentially increase rooting
Which is a sign that you may have hard foggy haze on glasses and/or facuets
water?
The most visible form of wind erosion suspension
How to prevent splash erosion? mulches
What were the approximate dates for the 1840s to 1860s
Guano Boom?
Who instituted the Guano Islands Act? 1856-US said any deserted island in the world with guano could be claimed by the
What did it say? US. 94 islands claimed. The Act is still in effect- we still have ~15 islands.
synthesize ammonia (NH3) Inorganic nitrogen from organic nitrogen (N2) and
hydrogen (H2) gases. This process is vital for the production of fertilizers, as
The Haber-Bosch process does what? ammonia is a key component in nitrogen-based fertilizers. Without the Haber-Bosch
process, modern agriculture would struggle to produce the quantities of food
needed to sustain the world's population.
What two things have to be on the fertilizer This is the minimum level of fertilizer nutrients expressed as a percentage.Also tells
label for a guaranteed analysis? us the source of the fertilizer nutrients.
Who regulates the guaranteed analyses? State
Inorganic: Contains no carbon. Examples are: ammonium sulfate (AS) (NH4)2SO4 21-
How does an inorganic fertilizer differ from 0-0. Ammonium nitrate (AN) 34-0-0 NH4NO3. Potassium chloride (KCl) 0-0-60
organic? Organic: Contains carbon. EXCEPT CO2, HCO3, CO3. Urea CO(NH2)2 46-0-0 (a
synthetic organic) Manures, Chicken litter, biosolids
Soluble: Readily available for plant use, Urea, ammonium sulfate, calcium nitrate,
Rapid plant response, Tend to be cheapest. BUT-if incorrectly applied can cause
damage to seed or plants. Can be environmentally damaging- loss to groundwater
or through runoff, Immediate nutrient release, Rapid crop response, Possibility of turf
burn, Overapplication can lead to environmental issues. Tend to be inexpensive,
Examples: urea, (NH4)2 SO4, AN, calcium nitrate, potassium nitrate, Most often our
foliar, sources, too.
Slow Release: Controlled release, The nutrient is metered out over time (weeks to
How does a soluble fertilizer differ from
months), Protected environmental quality, Possibly fewer passes through the field,
slow-release?
Tend to be more expensive, has higher nutrient use efficiency. To be classified as
slow release N carrier, the slow release, components must be identified on the label
and constitute at least 15% of the total N in the fertilizer, Basically, the plant nutrients
are metered out to the growing crop over time. Chemically slow release-a reaction is
made at manufacturing to make them slow release. Physically slow release- a soluble
fertilizer (typically urea) covered with a polymer, wax or other film to make it slow
release. Organic sources that must have the organic N mineralized to nitrate-N and
ammonium-N.
Why is the P and K on the guaranteed It is our old method of analysis. It has nothing to do with what is in the bag or what
analysis reported as K2O and P2O5? the plant uses.
What is the name of the process by which Haber-Bosch process.
almost all synthetic N fertilizers are made?
The general name of the soil-test Mehlich (1 and 3)
extractant used in the southeast US?
Saturated paste extracts are correctly used It IS what we use for electric conductivity and soil pH
for TWO soil variables - what are those?
T or F - we have a calibrated soil test for N, False
from which we make fertilizer
recommendations?
Measurement of the degree to which the ESP
CEC is occupied by sodium
Which is the description of a saline soil? high in all salts
Soils that are high in sodium are prone to dispersion
A sodic soil ESP > 15%
What do we add to flocculate soils? calcium
Why is water that is high in bicarbonates an makes effects of Na worse - takes Ca/Mg out of solution
issue?
T/F An Auburn University soil test has a False
calibrated and effective soil test for
nitrogen
The Haber-Bosch process industrialized fixation of atmospheric N
Who regulates fertilizers and the the state
guaranteed analysis on fertilizer labels?
Saturated paste extracts (for soil) are most EC and pH
correctly used for
A grower took their soil samples to a depth 40
of 6 inches. The results say that they have
20 ppm extractableK. How much is that in
pounds per acre?
When fertilizer is applied in a band directly pop-up
on the seed it is called:
The type of organic matter that still would litter
have identifiable leaves, stems etc
Greatest human source of emitted carbon burning fossil fuel
dioxide to the atmosphere is?
, How do VAM help plants survive stress? fungal mycelium essentially increase rooting
Which is a sign that you may have hard foggy haze on glasses and/or facuets
water?
The most visible form of wind erosion suspension
How to prevent splash erosion? mulches
What were the approximate dates for the 1840s to 1860s
Guano Boom?
Who instituted the Guano Islands Act? 1856-US said any deserted island in the world with guano could be claimed by the
What did it say? US. 94 islands claimed. The Act is still in effect- we still have ~15 islands.
synthesize ammonia (NH3) Inorganic nitrogen from organic nitrogen (N2) and
hydrogen (H2) gases. This process is vital for the production of fertilizers, as
The Haber-Bosch process does what? ammonia is a key component in nitrogen-based fertilizers. Without the Haber-Bosch
process, modern agriculture would struggle to produce the quantities of food
needed to sustain the world's population.
What two things have to be on the fertilizer This is the minimum level of fertilizer nutrients expressed as a percentage.Also tells
label for a guaranteed analysis? us the source of the fertilizer nutrients.
Who regulates the guaranteed analyses? State
Inorganic: Contains no carbon. Examples are: ammonium sulfate (AS) (NH4)2SO4 21-
How does an inorganic fertilizer differ from 0-0. Ammonium nitrate (AN) 34-0-0 NH4NO3. Potassium chloride (KCl) 0-0-60
organic? Organic: Contains carbon. EXCEPT CO2, HCO3, CO3. Urea CO(NH2)2 46-0-0 (a
synthetic organic) Manures, Chicken litter, biosolids
Soluble: Readily available for plant use, Urea, ammonium sulfate, calcium nitrate,
Rapid plant response, Tend to be cheapest. BUT-if incorrectly applied can cause
damage to seed or plants. Can be environmentally damaging- loss to groundwater
or through runoff, Immediate nutrient release, Rapid crop response, Possibility of turf
burn, Overapplication can lead to environmental issues. Tend to be inexpensive,
Examples: urea, (NH4)2 SO4, AN, calcium nitrate, potassium nitrate, Most often our
foliar, sources, too.
Slow Release: Controlled release, The nutrient is metered out over time (weeks to
How does a soluble fertilizer differ from
months), Protected environmental quality, Possibly fewer passes through the field,
slow-release?
Tend to be more expensive, has higher nutrient use efficiency. To be classified as
slow release N carrier, the slow release, components must be identified on the label
and constitute at least 15% of the total N in the fertilizer, Basically, the plant nutrients
are metered out to the growing crop over time. Chemically slow release-a reaction is
made at manufacturing to make them slow release. Physically slow release- a soluble
fertilizer (typically urea) covered with a polymer, wax or other film to make it slow
release. Organic sources that must have the organic N mineralized to nitrate-N and
ammonium-N.
Why is the P and K on the guaranteed It is our old method of analysis. It has nothing to do with what is in the bag or what
analysis reported as K2O and P2O5? the plant uses.
What is the name of the process by which Haber-Bosch process.
almost all synthetic N fertilizers are made?
The general name of the soil-test Mehlich (1 and 3)
extractant used in the southeast US?
Saturated paste extracts are correctly used It IS what we use for electric conductivity and soil pH
for TWO soil variables - what are those?
T or F - we have a calibrated soil test for N, False
from which we make fertilizer
recommendations?
