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Agronomy Quiz Questions and Answers
2024-2025
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This crop is: - ANSalfalfa
A common disease of wheat is leaf rust, which is caused by a fungus that does not
survive over winter in Kansas
...
In this example, the wind is called the: ANSvector
A common disease of wheat is streak mosaic, which is caused by a virus that is
transferred from volunteer plants to newly planted seedlings by the wheat curl mite
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Roundup herbicide
b
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corn rootworms
d
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all of the above
A crop consultant is calibrating a planter for sunflowers
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The machine has 30-inch row
spacing
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0 seeds/ac
A crop consultant is calibrating a row crop planter
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The planter has 30-inch row spacing
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He finds an average of 34 plants per 20 foot
length of row
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What is the plant population in plants
per acre? - ANS29,620 plants/acre
A crop consultant is evaluating an emergence problem in soybeans
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The row width is 15-inches
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a
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b
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- ANSa
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59% emergence
A crop consultant is evaluating an emergence problem in sunflowers
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The row width is 24-inches
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a
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b
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- ANSa
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60%
A crop consultant is evaluating an emergence problem in sunflowers
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The row width is two foot
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Calculate the final emerged plant population
in plants per acre and determine the percent emergence of the planted seeds
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4%
A crop planted to protect the soil from erosion, add nitrogen to the soil (if a legume is
used), and "trap" nutrients to reduce losses during the time between two crop seasons
is called a: - ANScover crop
A crop planted to protect the soil from erosion, add nitrogen to the soil (if a legume is
used), and "trap" nutrients to reduce losses during the time between two crop seasons
is called a: - ANScover crop
A crop planted to protect the soil from erosion, add nitrogen to the soil (if a legume is
used), and "trap" nutrients to reduce losses during the time between two crop seasons
is called a: - ANScover crop
A farmer delivers a truck load of wheat to the elevator that weighs 12
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The wheat
tests 12
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5 pounds per bushel
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00 per bushel
...
00
A farmer is going to plant his wheat at a rate of one and one half bushels per acre
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How
many bushels of seed will he need to purchase? - ANS120 bushels
A farmer is selecting flat fan spray nozzles to spray weeds
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8004
b
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9503

d
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11003 - ANSa
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i
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He has a 400 gal spray tank calibrated to spray at 20 gallons per acre (GPA)
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If the label recommends 3 pounds Weed-B-Done per acre, how much should be
added to one tankful?
b
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60
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$1
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a
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b
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20 at the local feed store
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- ANSa
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$1
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2% inert, 93% purity, 50 lbs net weight, and 375,000 seeds per pound
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This disease is caused by a fungal pathogen, and moves into Kansas from the
south and spreads by spores blown in the wind
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Many popular wheat
varieties are susceptible to the disease
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6 pounds a
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per acre
for bindweed control
...
i
...
Your
sprayer is calibrated to deliver 20 gallons per acre
...
How many gallons of
Kills-All 3L product should be added to the tank to apply the correct rate of herbicide? ANS5 gallons Kills-All/tank
A new chemical called triple bromo is recommended at a rate of 0
...
i
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You purchase a product called "Zap-Em-Dead 80 WDG" containing
triple bromo as the active ingredient (80% a
...
water dispersible granular formation)
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You have a sprayer with a 600
gallon tank, a 36-foot boom, and nozzle spacing of 20 inches
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This tool is called a: - ANSvertical tillage tool
A replicated variety performance test gives the results shown below
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Variety Yield bushel/acre
Wildcat 50
Cyclone 47
Cowboy 45
Husker 42
Average is 46 bushels/acre
L
...
D
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- ANS2,000,000
pounds
A soybean plant with unifoliate and three trifoliate leaves fully developed and no open
flowers is at growth stage: - ANSV4
According to NCRS guidelines, the minimum amount of crop residue which must remain
on the soil surface for a cropping system after planting to qualify as conservation tillage
is: - ANS30%
According to NCRS guidelines, the minimum amount of crop residue which must remain
on the soil surface for a cropping system after planting to qualify as conservation tillage
is: - ANS30%
According to NRCS guidelines, the minimum amount of crop residue which must remain
on the soil surface for a cropping system after planting to qualify as conservation tillage
is: - ANS30%
According to NRCS guidelines, the minimum amount of crop residue which must remain
on the soil surface for a cropping system to qualify as conservation tillage is: - ANS30%
After which reproductive growth stage will be the proper time to harvest corn for silage?
- ANSR5
Alfalfa weevil are generally most damaging in the: - ANSlarval stage prior to the first
spring cutting
An important environmental concern related to pesticide use is:
a
...
leaching of persistent chemicals or breakdown products into ground water
c
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effects on non-target organisms (native plants, adjacent crops, wildlife, fish, etc
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all of the above are issues which could threaten the future of pesticide use - ANSe
...
Your KSU
soil test results recommend 140 pounds of N per acre
...
What is the total cost of the
fertilizer plus application for the entire field? - ANS$8702
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All of them are classified as: - ANSsummer annual grasses
Because both oilseed and confectionary sunflowers grown in Kansas do not produce
additional leaves after they begin flowering, their growth habit is called: ANSdeterminate
Because most soybean varieties grown in Kansas continue to produce more leaves and
stems after they begin flowering, their growth habit is called: - ANSindeterminate
Because oilseed and confectionary sunflowers grown in Kansas do not produce
additional new leaves after they begin flowering, their growth habit is called: ANSdeterminate
Because soybeans continue to produce more leaves and stems after they begin
flowering, they have a(n) ______ growth habit
...
i
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Round to the nearest cent
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Weed-Out 5L (5 pounds of a
...
per gallon liquid) at a cost of $26
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b
...
i
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20 per pound of product
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$5
...
i
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$6
...
i
...
The
likely cause is: - ANSfescue toxicosis from an alkaloid produced by an endophyte
fungus living within plants
Cheat, downy brome, and jointed goatgrass are all problem weeds in wheat in Kansas
that are classified as: - ANSwinter annual grasses
Cheat, downy brome, and jointed goatgrass are particularly difficult to control in wheat
because they are _____________ weeds
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Soil management practices to
maintain or increase soil organic matter help counteract this trend by storing carbon in
soil, and farmers may now get compensation for these practices through carbon
exchange "cap and trade" programs
...
Soil management practices to
maintain or increase soil organic matter help counteract this trend by storing carbon in
soil
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The R3 stage is also
described as the: - ANSmilk stage
Corn is unusual because it has separate male and female flowers on each plant - the
tassel and the ear
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The descriptive terms for the other four reproductive stages, in sequential
order from R2 through R5, is: - ANSblister > milk > dough > dent
Corn reproductive growth stages start with silking (R1) and end with physiological
maturity (R6)
...
Random counts in the field result in an average of 14 soybean seeds per
square foot on the ground
...
Estimate
the yield loss in bushels per acre using the standard weight per bushel for soybeans
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4 bushels/acre
For which of the following Kansas crops might farmers grow either oilseed or
confectionary type varieties?
a
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wheat
c
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corn
e
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sunflower
For which of the following Kansas crops would seed selection involve picking a
variety/hybrid with the correct "maturity group" rating?
a
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soybean
c
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alfalfa - ANSb
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585 mg/kg
b
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6200 mg/kg
d
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6200 mg/kg
From the following list, the oral LD50 value representing the most toxic pesticide is:
a
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320 mg/kg
c
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30 mg/kg - ANSd
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Dual, Bicep)
Growing wheat every second year on particular field with no crop in the alternate years
is termed a(n) ______ cropping system
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I also fix my own
nitrogen from
the atmosphere
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- ANSalfalfa
If a farmer in Central Kansas planted both a Maturity Group 3 and a Maturity Group 4
variety on the same date, which of the following crops did he plant, and what will be the
most likely result?
a
...

b
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c
...

d
...

e
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- ANSb
...

If a farmer in Central Kansas planted both a Maturity Group 3 and a Maturity Group 4
variety on the same date, which of the following crops did he plant, and what will be the
most likely result? - ANSThe crop is soybean and the Group 3 variety would start
flowering first
If corn at the V4 stage was clipped off at ground level by an escaped cow, what will be
the most likely outcome? - ANSThe corn will grow back slowly from the original main
stem
If environmental conditions are optimal, the highest grain yield will be produced by
______ season maturity hybrids:
a
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medium
c
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full
If your soil pH is too low, the best practice is to apply: - ANSlime
In Kansas, freezing injury to winter wheat is most likely to occur: - ANSafter the jointing
stage through the flowering (anthesis) stage in the spring
Kansas usually ranks ___ in the U
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in winter wheat production
...
S
...
- ANSfirst
Most of the stored food energy used for germination in a corn seed is located in the: ANSendosperm
Much recent discussion has focused on using corn or sorghum residue after grain
harvest as a source of biomass for cellulosic ethanol production in the future
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leaching into groundwater (contaminating wells used for drinking water)
b
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denitrification releasing a "greenhouse gas" (contributing to global warming)
d
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none of the above are significant, since nitrogen is so tightly held in the soil - ANSd
...
E
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salts
c
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nitrates
e
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salts

Prior to harvest, a farmer wants to estimate the yield for her corn crop
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The ears average
18 rows around and 36 kernels long
...

Estimate the yield in bushels per acre using the standard weight per bushel for corn
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0 bushels/ac
Prior to harvest, a producer wants to estimate grain yield of corn
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Assume one ear per plant
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Using the standard
weight per bushel for corn, what is the estimated yield in bushels per acre? (round to
nearest whole number) - ANS164 bu/acre
Prior to harvest, a producer wants to estimate grain yield of corn
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Assume one ear per plant
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3 grams/kernel
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sorghums
b
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fescue
d
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native range (prairie) - ANSa
...
alfalfa
b
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tall fescue
d
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native range (prairie) - ANSd
...
The stems can be crushed to remove the sugary juice for easy
fermentation, and the stalks could be used for cellulosic ethanol
...
- ANSshort
day
Sprinkler irrigation systems have an advantage over furrow irrigation systems for all of
the following except:
a
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less energy required to pump and distribute water with sprinkler
c
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less land leveling needed with sprinkler
e
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less energy required to pump and
distribute water with sprinkler
Sprinkler irrigation systems have an advantage over furrow irrigation systems for all of
the following except:
a
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less leaching losses with sprinkler
c
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less land leveling needed with sprinkler
e
...
less energy
required to pump and distribute water with sprinkler
Sustainable cropping systems are generally characterized by:
a
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use of integrated pest management (IPM)
c
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use of stubble mulch reside management to control erosion
e
...
The
standard seed count for these soybean seed bags is: - ANS140,000

Syngenta corn hybrids are markets under the Agrisure product name with the
genetically engineered traits coded by abbreviations (ei
...
Which of these abbreviations indicates the presence of a trait for
glufosinate herbicide resistance (most commonly marketed under the trade name Ignite
or Liberty)?
a
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RW
c
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LL - ANSd
...
585 mg/kg
b
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6200 mg/kg
d
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27 mg/kg
The part of the plant cell where photosynthesis occurs is the: - ANSchloroplast
The part of the plant cell where respiration occurs is the: - ANSmitochondria
The phrase "dusting it in" when used in wheat production refers to: - ANSplanting the
seed shallow into a dry soil surface hoping for a rain so it can germinate later
The phrase "dusting it in" when used in wheat production refers to: - ANSplanting the
seed shallow into a dry soil surface hoping for a rain so it can germinate later
The practice of no-till planting grain sorghum into the stubble of a wheat crop
immediately after wheat harvest in late June is called: - ANSdouble cropping
The practice of no-till planting soybeans into the stubble of a wheat crop immediately
after wheat harvest in late June is called: - ANSdouble cropping
The purpose of adding agricultural lime to soil is to: - ANSraise the pH of acidic soils
The stage of growth of wheat where the plant is elongated and the spike is fully
enclosed in the last leaf is: - ANSboot
The standard test weight per bushel for corn is: - ANS56 pounds
The standard test weight per bushel for grain sorghum is: - ANS56 pounds
The standard test weight per bushel for soybean is: - ANS60 pounds
The standard test weight per bushel for wheat is: - ANS60 pounds
The stored food energy used for germination in a corn or wheat kernel is located in the:
- ANSendosperm
The stored food energy used for germination in a soybean seed is located in the: ANScotyledon

The term "inoculated seed" when used in soybean production refers to: - ANSseed
treated with nitrogen fixing bacteria to insure nitrogen fixation
The term "safened seed" when used in grain sorghum production refers to: - ANSseed
treated with a chemical to protect the seedlings from herbicide injury
The top crop in Kansas in 2010 in total acres harvested was ________, while the top
crop in total bushels and total value of production was ________
...
ANScorn and soybeans in the US; corn and wheat in Kansas
The wheat diseases leaf rust, stem rust, and stripe rust are all caused by: - ANSfungi
The wheat diseases soil borne mosaic, streak mosaic, and barley yellow dwarf are all
caused by: - ANSviruses
There is considerable controversy recently over the use of neonicotinoid insecticides
and their potential environmental impact
...
She counts down the row and finds an
average of 90 heads per 2-foot row section
...
Assume an
average of 25 seeds per head and 15,000 seeds per pound for wheat
...
- ANSjointing
To slow the development of insect resistance (Insect Resistance Management) in crops
genetically engineered with Bt technology, farmers have been required to plant a portion
(usually 20%) of the field to non-Bt hybrids as a "refuge
...
These legally regulated weeds are called: - ANSnoxious weeds
Weeds like field bindweed are not allowed in any quantity in seed for sale according to
state law
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15-20%
b
...
45-50%
d
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85-90% - ANSd
...
more water infiltration
b
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warmer soil temperature
d
...
less water erosion - ANSc
...
more water infiltration
b
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cooler soil temperature
d
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less overwintering of insect and disease pests - ANSe
...
alfalfa
b
...
wheat
d
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soybean - ANSe
...
corn
b
...
soybean
d
...
soybean
Which of the following crops produce seeds with the lowest percent protein?
a
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hard red winter wheat
c
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grain sorghum - ANSd
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urea
b
...
anhydrous ammonia
d
...
anhydrous ammonia
Which of the following fertilizer carriers has the lowest percent nitrogen analysis?
a
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urea-ammonium nitrate solution (UAN)
c
...
diammonium phosphate (DAP) - ANSd
...
native range
b
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tall fescue
d
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alfalfa - ANSe
...
fungi
b
...
viruses
d
...
adjuvants - ANSa
...
urea
b
...
anhydrous ammonia
d
...
ammonium polyphosphate - ANSa
...
urea
b
...
di-ammoniu phosphate (DAP)
d
...
anhydrous ammonia (NH3) - ANSd
...
alfalfa
b
...
bermudagrass
d
...
sudangrass - ANSd
...
alfalfa
b
...
wheat
d
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soybean - ANSb
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A) No-till farming
B) Intensive cover cropping
C) Spraying high rates of glyphosate herbicide
D) Chisel plowing every summer
E) Putting land into the CRP program - ANSD) Chisel plowing every summer

Which of the following soil parent materials was deposited by flowing streams or rivers?
a
...
residual material
c
...
alluvium - ANSd
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colluvium
b
...
loess
d
...
lacustrine - ANSc
...
WP
b
...
EC
d
...
EC
Which of the following standard abbreviations for pesticide formulations indicate a liquid
product? - ANSEC
Which of the following terms or acronyms found on a pesticide label defines the
protective equipment (type of clothing, gloves, goggles, respirator, etc
...
EPA number
b
...
PPE
d
...
signal word - ANSc
...
EPA number
b
...
PPE
d
...
signal word - ANSb
...
canola
b
...
safflower
d
...
canola
Winter wheat must b exposed to cold temperature to initiate head formation for
flowering
...
This process is called: - ANSvernalization
You are calibrating a prayer and you collect 287 ml of water in 15 seconds from an
individual nozzle
...
Use the following formula to determine the sprayer application rate in gal/acre
(GPA)
...
0 gal / acre
You are calibrating a sprayer and you collect 25
...
Nozzle spacing is 20 inches and the speed of travel is 7 miles
per hour
...

GPA = [(5940)(GPM)]/[(MPH)(Nozzle Spacing in Inches)] - ANS17 gal/acre
You are calibrating a sprayer and you collect 331 ml of water in 15 seconds from an
individual nozzle
...
Use the following formula to determine the sprayer application rate in gal/acre
(GPA)
...
3 gal/acre
You are calibrating a sprayer and you collect 400 ml of water in 15 seconds from an
individual nozzle
...

a
...
What is the application rate in gallons per acre? (you may use the shortcut formula)
GPA = (5940 x GPM)/(MPH x Nozzle Spacing in Inches) - ANSa
...
4 gal/min

b
...
1 gal/ac
You are calibrating a sprayer and you collect 8 ounces of water in 15 seconds from an
individual nozzle
...
Use the following formula to determine the sprayer application rate in gal/acre
(GPA)
...
85 gallons/acre
You wish to apply 1 inch of water to your field which is under a center pivot irrigation
system on a quarter section in western Kansas
...
There are 27,154 gallons per acre-inch
...
9 hours/field
You wish to apply 2,4-D at a rate of 0
...
You choose
the product called Wally's Miracle Kill 4L (4 pounds active ingredient per gallon)
...
How many acres can be sprayed with each tankful?
b
...
32
acres / tank
b
...

Your sprayer is calibrated for the label recommendation of 15 gallons of spray solution
per acre for marestail control
...
5 oz active
ingredient per acre
...
How many pounds of
OpTill should be added to your 450 gallon tank? - ANS3
...

Fertilizers available are UAN (32-0-0), DAP (18-46-0), and KCl (0-0-60)
...
- ANS4
...
Fertilizers available are UAN (32-0-0) at $400/ton and MAP (11-52-0) at $750/ton
...
How many pounds of MAP is needed per acre?
b
...
163
...
$175
...
Fertilizers available are
UAN (32-0-0), MAP (11-52-0), and KCl (0-0-60)
...
- ANS6154 pounds
MAP/field
Your soil test recommends 45 pounds K2O per acre for grain sorghum
...

Select the proper fertilizer and calculate how many pounds are needed for an 80 acre
field
...
Fertilizers available are UAN
solution (34-0-0), TSP (0-45-0), and muriate of potash (0-0-60)
...
- ANS160
tons/field
Your soil test report shows a pH of 4
...
4 tons ECCE lime per acre
...
What is the cost of the lime required for a 160 acre quarter-section field? ANS$12,800/field



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