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WorksheetsAgronomy
Total questions: 99
Worksheet time: 50mins
Name
Class
Date
1.
A conservation buffer is designed to accomplish which of the following goals?
a)
protect streams and lakes from sediment runoff
b)
protect manmade structures, such as roads or buildings, from potentially adverse effects of weather or human activities such as agriculture and timber harvest
c)
serve as living snow fences and grass hedges
d)
all of these
2.
Under the Conservation Reserve Plan (CRP), producers:
a)
voluntarily retire environmentally sensitive cropland for 10 to 15 years
b)
receive annual rental payments for the Commodity Credit Corporation
c)
Need not eliminate all invasive species to be eligible
d)
all of these
3.
Seed that are viable (alive) may fail to germinate when planted. Failure of this seed to germinate may be caused by:
a)
the seed being too old
b)
improper storage of the seed
c)
all of these
d)
hard seed coat or dormancy
4.
Which of the following crop species are primarily cross pollinated?
a)
wheat and soybean
b)
oats and barley
c)
none of these
d)
corn and alfalfa
5.
Application of nitrogen to legume forage crops such as alfalfa and red clover is not recommended since:
a)
forage crops do not require nitrogen for growth
b)
application of nitrogen to legumes can result in prussic acid poisoning
c)
Nitrogen is a dangerous chemical and should not be used on potential feed crops
d)
with the help of bacteria, these crops can fix atmospheric nitrogen
6.
You have a bunker silo that will hold 400 tons of wet corn silage packed at an average density. If you anticipate corn silage yields of 5 tons per acre of dry matter (harvested at 35% dry matter), how many acres of corn will you need to plant in order to fill your bunker silo at harvest? Round your answer to the nearest whole number.
a)
35 acres
b)
42 acres
c)
24 acres
d)
28 acres
7.
Each year, millions of acres of winter wheat in the central Plains of the US are utilized as a dual purpose crop (forage and grain). The wheat is grazed early in the growing season and cattle are subsequently removed. In order to get a grain crop, the livestock must be removed before:
a)
tillering stage
b)
first flag leaf
c)
none of these
d)
jointing stage
8.
The first mechanical seed drill was invented in 1730 by:
a)
Cyrus Doolittle
b)
John Deere
c)
Eli Whitney
d)
Jethro Tull
9.
Your neighbor had a field sprayed about two weeks ago while it was windy. Over the period your lawn and flowers started turning yellow and died. Your shrubs also have some die back. Which of the following herbicide modes of action most likely caused this damage?
a)
Growth regulator
b)
Pigment inhibitor
c)
Cell membrane disruptor
d)
Amino acid inhibitor
10.
Which of the following species is a monocot?
a)
Common ragweed
b)
Soybean
c)
Buckhorn plantain
d)
Sorghum
11.
Legumes can fix nitrogen from the atmosphere. Which of the following is a legume?
a)
Corn
b)
Sunflower
c)
Canada thistle
d)
White clover
12.
Which of the following is considered a secondary nutrient?
a)
Nitrogen
b)
Phosphorus
c)
Potassium
d)
Calcium
13.
Which soil texture tends to have the highest Cation Exchange Capacity range?
a)
Course (sands)
b)
Medium (silts)
c)
Fine (clays)
d)
Organic soils
14.
At which stage does corn require the most water?
a)
Early tassel
b)
Milk
c)
Prior to 12-leaf stage
d)
Silking
15.
Which of the following pesticide formulations is most damaging to spray equipment?
a)
Emulsifiable concentrate (EC)
b)
Flowable (F)
c)
Dry flowables (DF)
d)
Wettable powder (WP)
16.
What is the most important concept when applying pesticides?
a)
Calibrate the sprayer
b)
Use correct PPE
c)
Proper storage
d)
Read and follow the label
17.
Which of the following is most toxic?
a)
Grain alcohol with an LD50 of 1200
b)
A fungicide with an LD50 of 12000
c)
A herbicide with an LD of 2300
d)
An insecticide with an LD of 700
18.
Generally, which nutrient deficiency causes tissues to turn yellow at a pH above 7.2?
a)
phosphorus
b)
iron
c)
boron
d)
manganese
19.
Which of the following nutrients is most mobile in soil solution?
a)
iron
b)
calcium
c)
phosphorus
d)
boron
20.
Which of the following soil types would have the highest organic matter?
a)
silt loam
b)
sandy clay loam
c)
sand
d)
muck
21.
You are applying Aatrex 4E at a rate of 1 quart per acre using 10 gallons of water per acre of application. You are traveling at 4.5 MPH, the nozzles are 20 inches apart, and your boom length is 90 feet. How much Aatrex and water would you need for an 8 acre field?
a)
80 gallons of Aatrex and 2 gallons of water
b)
8 gallons of Aatrex and 20 gallons of water
c)
1 quart of Aatrex and 10 gallons of water
d)
2 gallons of Aatrex and 80 gallons of water
22.
On what part of the plant does a bollworm feed?
a)
flowers
b)
foliage
c)
roots
d)
fruit
23.
Which of the following groups of essential elements are classified as micronutrients?
a)
Mn, K, and Ca
b)
P, N, and K
c)
Mg, Ca, and S
d)
Zn, Mn, and Mb
24.
Maganese is essential to a crop plant for which of the following reasons?
a)
activation of enzymes
b)
adjustment of stomatal movement
c)
necessary for normal mitotic divisions
d)
photosynthesis
25.
Plants grown on alkaline soils can suffer ill effects from:
a)
Mo and Mg toxicity
b)
Al and Mn toxicity
c)
increased nitrification
d)
Al and Mn deficiency
26.
A pesticide is most likely to move offsite if it has which of the following characteristics?
a)
high solubility
b)
strongly absorbed to soil colloids
c)
rapidly degraded by soil organisms
d)
high volatility
27.
To raise the potassium level of the soil in your field from 130 to 150 you would probably want to spread _______ on your field.
a)
DAP
b)
Triple super phosphate
c)
Urea ammonium nitrate
d)
Potash
28.
A pesticide that can only be handled and applied by a certified applicator is called a ______ use pesticide.
a)
general
b)
special
c)
licensed
d)
restricted
29.
Soil herbicides that exhibit differential selectivity are generally based on what?
a)
placement
b)
physiological morphogenesis
c)
all of these
d)
differential metabolism
30.
You are applying 2,4-D and it is important that you minimize spray drift. Which of the following nozzle types would be the WORST choice to use?
a)
flood jet
b)
flat-fan EVS
c)
flat-fan
d)
hollow cone
31.
A "transgenic" crop is any plant that:
a)
has been transported across wide geographic regions
b)
has been backcrossed to a "wild genotype" parent plant
c)
is a cross between two genetically related species
d)
has one or more foreign genes inserted via molecular techniques
32.
What plant characteristics should NOT be a primary consideration when selecting a cultivar for planting?
a)
yield performance
b)
disease resistance
c)
maturity group
d)
seed size
33.
Farmer Sarah has a half section of dryland wheat in western Kansas. She has her wheat custom harvested and is quoted a cost of $11 per acre plus $0.21 per bushel Sarah expects a yield of 45 bushels per acre. What are her total harvest costs?
a)
3024
b)
3502
c)
15.95
d)
6544
34.
How many acres are there in a rectangular parcel of land that measures 900 feet long and 620 feet wide?
a)
9.6
b)
55.8
c)
5.8
d)
12.8
35.
Grassy weeds can be identified based on morphological traits such as:
a)
plant tissue and analysis
b)
petiole length
c)
none of these
d)
auricles and ligules
36.
Plant pathogens consist of four main groups. They are:
a)
fungi, weeds, bacteria, and viruses
b)
insects, weeds, fungi, and bacteria
c)
fungi, insects, bacteria, and viruses
d)
viruses, fungi, bacteria, and nematodes
37.
Which of the following diseases are bacteria most likely to cause?
a)
Verticilium, Rhizoctonia, or Fusarium stalk rots
b)
Vegetable Soft Rots
c)
Tobacco Mosaic (TMV), Tomato Spotted Wilt (TSWV)
d)
Smuts
38.
Nematodes are:
a)
flagellated fungal hyphae
b)
rod shaped bacteria
c)
viroids
d)
tiny little parasitic worms
39.
Which of the following would be an advantage of increased organic matter?
a)
improves soil tilth
b)
provides a "storehouse" for nutrients
c)
provides surface protection
d)
all of these are advantages
40.
Generally, which of the following nutrient deficiencies causes interveinal chlorosis?
a)
nitrogen
b)
potassium
c)
sulfur
d)
manganese
41.
Liebig's 1840 "Law of the Minimum" stated that:
a)
the most available nutrient will limit yield
b)
it was against the law to apply more than a minimum amount of manure on sloping fields
c)
maximum yields could be achieved using minimum fertilizer inputs
d)
the least available nutrient will limit yield
42.
Tomato spotted wilt virus (TSWV) affects which of the following crops?
a)
Tomatoes
b)
Peppers
c)
Peanuts
d)
All of these
43.
The fertilizer recommendations that a farmer receives with the soil test results typically vary the most with
a)
time of year
b)
method of application
c)
the level of conservation tillage the farmer uses
d)
crop and yield goal
44.
You are planting 35 acres of pinto beans. You want to plant 60 pounds of viable seed per acre. The seed you purchased is 95% pure with a germination of 93%. How many actual pounds must you plant?
a)
2211 pounds
b)
1855 pounds
c)
2100 pounds
d)
2377 pounds
45.
Which of the following tillage systems and residues would provide the most water infiltration 1 hour after a rain?
a)
no tillage, bare surface
b)
no tillage, 40% residue cover
c)
plowed, disked, cultivated with a bare surface
d)
no tillage, 80% residue cover
46.
Which of the following is a micro-nutrient that would cause the leaves to appear somewhat striped when the pH is high and it becomes deficient?
a)
Boron
b)
Calcium
c)
Potassium
d)
Zinc
47.
Which of the following activities is most apt to result in a long-term soil pH increase?
a)
application of high rates of animal manure
b)
application of fertilizers containing ammonia
c)
acid rain
d)
irrigation with water containing high levels of salt
48.
A corn producer wants to apply a total of 300 pounds of nitrogen per acre on his corn field. He has spread 10 tons per acre of dry manure with an average analysis of 15 pounds of nitrogen per ton. How many additional pound of nitrogen must he apply?
a)
120
b)
283
c)
None, he has applied enough already.
d)
150
49.
Which of the following nutrients is most mobile in the plant?
a)
phosphorus
b)
calcium
c)
magnesium
d)
nitrogen
50.
The loam soil textural group contains many subdivisions. An ideal loam may be defined as:
a)
a mixture of predominantly sand with a little clay
b)
a mixture of mostly sand and clay with a small amount of silt
c)
none of these
d)
a mixture of sand, silt, and clay particles that exhibits light and heavy properties in about equal proportions
51.
Which of the following soil types would require the greatest amount of lime to bring up a low pH condition?
a)
sandy clay loam
b)
clay
c)
silt loam
d)
clay loam
52.
The highest concentration of phosphorus in a plant is usually found in the
a)
stems
b)
leaf
c)
root
d)
seed
53.
Given that the atomic weight of phosphorus is 31 and oxygen is 16, what is the percentage of phosphorus in 100 pounds of P₂O₅?
a)
0.55
b)
0.391
c)
0.2
d)
0.437
54.
The carbon/nitrogen (C/N) ratio in soil is important for at least two reasons. First, competition for available nitrogen results when residues having a high C/N ratio are added to soils. Second, because this ratio is relatively constant in solids, the maintenance of carbon (and hence soil organic matter) is largely dependent on:
a)
soil textural class
b)
cation exchange capacity of soil
c)
soil pH
d)
soil nitrogen level
55.
You are with a non-FFA friend at a local home and garden supply store and you pass through the fertilizer aisle. Your friend notices that all of the bags have three numbers on them, each separated by a hyphen. Your friend also notices a bag that has a very high first number and much lower second and third numbers. You explain to your friend that this designation means that the fertilizer:
a)
has a high phosphorus content and is intended to stimulate root growth
b)
high a high potassium content and is intended to help promote healthy plants
c)
costs a lot more than the rest
d)
has a high nitrogen content and is probably intended for lawn application
56.
You have a rice field that measures 1350 ft. by 1452 ft. Your soil test recommends that you apply 100 pounds of nitrogen per acre to this field. How much urea (46-0-0) do you need to apply to this field to meet the recommendations?
a)
6.11 tons
b)
1 ton
c)
271.7 pounds
d)
4.89 tons
57.
What is nitrification?
a)
the conversion of an element from the inorganic to the organic form
b)
the biochemical process whereby ammoniacal nitrogen is released from nitrogen containing organic compounds
c)
the biochemical reduction of nitrate to gaseous nitrogen
d)
the biochemical oxidation of ammonium to nitrate
58.
Which nutrient must be applied, if deficient, for all grain crops?
a)
zinc
b)
manganese
c)
boron
d)
all of these
59.
When using the Feekes Scale for staging wheat growth, to what does stage 10 refer?
a)
tillering stage
b)
flowering
c)
second node visible
d)
in boot
60.
In corn production, R1 refers to:
a)
tassel emerged
b)
3rd leaf collar fully emerged
c)
emergence
d)
silking
61.
Phosphorus is essential to a crop plant for which of the following reasons?
a)
structural component of DNA
b)
structural component of RNA
c)
structural component of energy transfer molecules (ATP, ADP)
d)
all of the answers listed
62.
Hypogeal seedling emergence is characteristic of:
a)
most legumes
b)
cotton
c)
none of these
d)
corn and garden peas
63.
Photosynthesis is the process whereby plants convert solar energy into chemical energy. This process consists of a "dark" reaction and a "light" reaction. The "dark" reaction refers to:
a)
generation of ATP
b)
cyclic and non-cyclic photophosphorylation
c)
none of these
d)
synthesis of glucose from CO₂ and H₂
64.
Vernalization is a common requirement for temperate climate species before reproduction can occur. This term refers to:
a)
the requirement for short winter days to induce flowering
b)
a plant's ability to survive cold winter weather
c)
an indeterminate flowering habit
d)
cold treatment of a plant or a seed
65.
Which of the following plants is a dicotyledonous (2 sets of chromosomes) species in the botanical family Gramineae?
a)
alfalfa
b)
cotton
c)
buckhorn plantain
d)
corn
66.
Why do some plants not re-grow after they are cut?
a)
they are annuals and in-determinant
b)
they are perennials and determinant
c)
they are perennials and indeterminant
d)
they are annuals and determinant
67.
Parallel venation in a plant leaf would be characteristic of which of the following plants?
a)
buckwheat
b)
Soybean
c)
all of these
d)
corn
68.
Which of the following plant diseases is caused by a virus?
a)
Powdery mildew of red clover
b)
Stewart's Wilt
c)
Blue stem of tobacco
d)
Barley yellow dwarf
69.
Which of the following diseases are viruses most likely to cause?
a)
Verticilium, Rhizoctonia, or Fusarium stalk rots
b)
Vegetable Soft Rots
c)
Smuts
d)
Tobacco Mosaic (TMV), Tomato Spotted Wilt (TSWV)
70.
Which of the following insects is considered a beneficial or predatory insect?
a)
aphid
b)
Mexican beet beetle
c)
Japanese beetle
d)
Lady beetle
71.
Which of the following factors in seed germination are NOT enzymatically controlled?
a)
Absorption of oxygen
b)
Increase in respiration
c)
Initiation of cell division
d)
Imhibition of water
72.
Over 50% of the world's food supply comes from three crop sources. They are:
a)
corn, soybeans, and wheat
b)
rice, potatoes, and wheat
c)
soybeans, corn, and rice
d)
corn, rice, and wheat
73.
A bushel of corn at 15.5% moisture weighs 56 pounds. How much does a bushel of corn weigh at 19% moisture?
a)
61.4 pounds
b)
57.5 pounds
c)
51 pounds
d)
68.6 pounds
74.
The main purpose of flooding a rice field is to control weeds. However, deep water can negatively impact rice production. How?
a)
Reduced leaf area
b)
Reduced grain yield
c)
increased plant height but reduced tillering
d)
All of the answers listed
75.
How is a sugarcane field established?
a)
It is seeded with a conventional grain drill
b)
By broadcast seeding
c)
With transplanted seedlings
d)
It is planted using sugarcane stem pieces called brillets
76.
Which of these conditions favor the spread of a new disease from South America into the US, such as Soybean Asian Rust?
a)
cool, dry weather in the southeastern US
b)
cold winters in the southern US
c)
all of these
d)
large tropical storms and hot, humid weather
77.
You are applying Banvel 4F at a rate of 1/2 pint per acre using 20 gallons of water per acre of application. You are traveling at 4.5 MPH. The nozzles are 20 inches apart. What is the output for each nozzle?
a)
.20 GPM
b)
.15 GPM
c)
.50 GPM
d)
.30 GPM
78.
A pesticide is most likely to pollute groundwater if it has which of the following characteristics?
a)
high volatility
b)
strongly absorbed to soil colloids
c)
rapidly degraded by soil organisms
d)
high solubility
79.
Looking at an Atrazine 4F label, what does the F stand for?
a)
fine mixed
b)
first added
c)
strength rating
d)
flowable
80.
You are applying Prowl 3.3EC at a rate of 2 pints per acre using 20 gallons of water per acre of application. You are traveling at 4.5 MPH. The field size is 1000 feet by 1089 feet. The nozzles are 20 inches apart. How much herbicide and water will you need to treat the field?
a)
50 gallons of Prowl and 500 gallons of water
b)
10 gallons of Prowl and 200 gallons of water
c)
500 gallons of Prowl and 20 gallons of water
d)
6.25 gallons of Prowl and 500 gallons of water
81.
A Colorado producer has a center pivot sprinkler irrigating 200 acres of pinto beans. To control weeds, he will chemigate 4.2 ounces of herbicide per acre on his field. How many gallons of herbicide must he use to do this application?
a)
4.2
b)
47
c)
840
d)
6.5
82.
Conservation programs, such as CRP (Conservation Reserve Program) and EQIP (Environmental Quality Incentives Program) are administered by which of the following governmental agencies?
a)
Homeland Security
b)
Environmental Protection Agency (EPA)
c)
Conservation and Environmental Quality Agency
d)
National Resource Conservation Service (NRCS)
83.
USDA defines "Highly Erodible Land" (HEL) as land having an erodibility index (EI) of 8 or more. This EI is a ratio of the inherent erodibility of a soil to the soil loss tolerance. The soil loss tolerance, or "T" value, is:
a)
the tons (T) of soil lost per year if the land was continuously clean tilled
b)
an estimate of the total soil lost due to water erosion only
c)
all of these
d)
an estimate of the rate of soil erosion that can occur on a given soil without significant long-term productivity loss
84.
Generally, which nutrient deficiency causes tissues to turn purple?
a)
iron
b)
nitrogen
c)
sulfur
d)
phosphorus
85.
The smallest particle in soil is:
a)
silt
b)
sand
c)
loam
d)
clay
86.
Which of the following would be a disadvantage for applying manure to a field?
a)
increased organic matter
b)
added soil nutrients
c)
all are advantages
d)
potential nitrogen runoff
87.
Fertilizers are chemical compounds. The ratio of elements in a particular fertilizer (chemical) can be easily calculated by knowing the weight of the individual components. Given that the atomic weight of potassium is 39.1 (and you have two of these!) and oxygen is 16, what is the percentage of potassium in 200 pounds of K₂O?
a)
0.5
b)
0.45
c)
0.391
d)
0.83
88.
The primary source of error from a soil test is:
a)
laboratory analysis
b)
soil that is too wet
c)
none of these
d)
field sampling technique
89.
A fertilizer is being advertised as an all purpose 13-13-13. What does the 13-13-13 indicate?
a)
very, very, very bad luck
b)
13% urea, 13% P₂O₅, 13% K₂O
c)
None of these
d)
13% nitrogen, 13% phosphorus, 13% potassium
90.
Giberellins used as a plant growth regulator
a)
induce shoot cells and are used to thin fruit
b)
prolong storage
c)
induce stem shortening
d)
intensify enzyme production and stimulate cell growth
91.
What part of a plant cell contains non-nuclear DNA?
a)
nucleus
b)
chloroplasts
c)
cell wall
d)
mitochondria
92.
In soybean growth staging, which of the following refers to full bloom?
a)
R8
b)
VC
c)
V4
d)
R2
93.
As a rice, wheat, or other grain crop plant emerges through the soil surface, the primary leaf or plumate is protected by the:
a)
rhizome
b)
coleoptiles
c)
mesocotyl
d)
hypocotyls
94.
The vascular tissue in a crop plant that conducts nutrients is the:
a)
xylem
b)
parenchyma
c)
hypocomida
d)
phloem
95.
Peanut plants grow:
a)
with pods forming from flowers above the ground
b)
with nodules forming on the roots that become nuts
c)
with pods in the axils of branches and petioles
d)
with pods forming at the end of pegs below ground
96.
Which of the following is a warm season (C4) grass?
a)
orchardgrass
b)
Kentucky bluegrass
c)
Tall fescue
d)
bermudagrass
97.
Why do some forage plants not re-grow after they are cut?
a)
They are determinant
b)
They are in-determinant
c)
All of these
d)
They are annuals
98.
The leaf blade of a grass plant is attached to a leaf sheath, which in turn attaches to the stem of the plant at the:
a)
ligules
b)
auricles
c)
stemmata
d)
node
99.
Phototropism is caused by plant hormones that cause a plant to:
a)
have downward growth of roots
b)
have upward growth of stems
c)
all of these
d)
lean toward a light source
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