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Agronomy 2015

Total questions: 101

Worksheet time: 51mins

Name
Class
Date
1.

Which of these crops is/are usually grown as hybrid/s?

a)

corn and soybeans

b)

corn

c)

corn and grain sorghum

d)

grain sorghum

e)

soybean

2.

Cations are held on the CEC by ___ charges on clay and organic matter.

a)

positive

b)

gravitational

c)

negative

d)

neutral

3.

Applying fertilizer through an irrigation system is called_____________.

a)

fertigation

b)

banding

c)

broadcasting

d)

foliar application

4.

Which of the following is NOT one of the three sides of the disease development triangle?

a)

pathogen

b)

host

c)

enivronment

d)

antigen

5.

Which of the following is the least available source of nutrients?

a)

soil minerals

b)

oganic matter

c)

soil solution

d)

cation exchange sites

6.

Harvest date is affected by

a)

seed quality

b)

excess soil P

c)

neutral soil pH

d)

hybrid or variety

7.

Immobilization of inorganic N during decomposition will be most likely if the material decomposing has a C:N ratio of ______?

a)

10

b)

35

c)

30

d)

15

8.

Excessive moisture generally ____ nutrient uptake.

a)

does not change

b)

increases only N

c)

increases

d)

decreases

9.

Which of the following is used to identify a broadleaf weed seedling?

a)

cotyledons

b)

ligules

c)

pubescent collar

d)

auricles

10.

Which of the following is not detrimental to soil structure?

a)

maintaining crop residue

b)

field traffic

c)

conventional tillage

d)

Tilling the soil when wet

11.

Which of the following would potentially lead to reduced seeding rate?

a)

optimum soil moisture

b)

adverse weather

c)

increased seed size

d)

no-till

12.

Which of the following is most likely the result of seeding a summer crop too early?

a)

less seedling disease

b)

reduced germination

c)

higher yield

d)

more lodging

13.

The crop growth stage where roots, stems, and leaves develop is ____________.

a)

flowering

b)

vegetative

c)

germination

d)

maturation

14.

What is the minimum test weight per bushel for US number 2 corn?

a)

60 lbs

b)

55 lbs

c)

56 lbs

d)

58 lbs

15.

What type of soil has nutrients that pass through quickly?

a)

silt soils

b)

clay soils

c)

sandy soils

16.

Reed Canarygrass' appropriate stage of maturity for harvest.

a)

1/4 to 1/2 bloom

b)

seed heads emerged

c)

bud to 1/10th bloom

d)

late boot stage

e)

blooms emerged

17.

The structure labeled 99 refers to what female part of a complete flower?

a)

style

b)

ovary

c)

pistil

d)

stigma

e)

petal

18.

Smooth Bromegrass' appropriate stage of maturity for harvest.

a)

late boot stage

b)

seed heads emerged

c)

bud to 1/10th bloom

d)

1/4 to 1/2 bloom

e)

blooms emerged

19.

The structure labeled 92 refers to what part of a male complete flower

a)

stamen

b)

petal

c)

sepal

d)

filament

e)

anther

20.

What is the Carrying Capacity of a grazing system?

a)

the amount of weight allowed on the pastures

b)

the total amount of forage dry matter produced annually

c)

the percentage of the annual forage production that will be actually harvested by the grazing livestock

d)

the stock rate that is economically and environmentally sustainable for a particular grazing unit throughout the grazing season

21.

________________is a major way insects feed.

a)

digesting

b)

regurgitating

c)

piercing-sucking

d)

licking

22.

The structure labeled 95 refers to what part of a complete flower?

a)

stamen

b)

petal

c)

anther

d)

sepal

e)

filament

23.

Good soil structure in the subsoil improves ____________.

a)

root elongation

b)

germination

c)

water table development

d)

anaerobioses

24.

Which of the following pathogens usually survives only in tissue?

a)

fungi

b)

virus

c)

bacteria

d)

nematode

25.

What is the difference between rotational grazing and management intensive grazing?

a)

rotational grazing involves grass pastures whereas management intensive grazing involves legume pastures only

b)

rotational grazing is for sheep whereas management intensive is for cattle

c)

rotational grazing involves two to seven pastures whereas management intensive involves eight or more pastures

d)

there is no difference

26.

This warm season grass is often called “Ice Cream” grass since it is high in nutrition and palatability. It is also highly productive but prefers loamy soils with adequate moisture.

a)

Big Bluestem

b)

Sideoats grammagrass

c)

Bermudagrass

d)

Little Bluestem

e)

Eastern Gamma grass

27.

Orchardgrass' appropriate stage of maturity for harvest

a)

late boot stage

b)

blooms emerged

c)

1/4 to 1/2 bloom

d)

bud to 1/10th bloom

e)

seed heads emerged

28.

Which of the following accelerates canopy closure?

a)

narrow rows

b)

upright plant growth habit

c)

wide rows

d)

lower plant population

29.

Symbiotic nitrogen fixation is the process where atmospheric nitrogen is converted to ammonia in the root nodules of

a)

legumes

b)

grasses

c)

fungi

d)

lichens

30.

What are N E Lact., N E Gain, and N E Maint. estimated from?

a)

TDN

b)

A.D. Fiber

c)

Crude Protein

d)

N.D. Fiber

31.

With everything else being equal which soil conditions cause the deepest soil compaction?

a)

wet soil

b)

dry soil

c)

moist soil

d)

soil moisture has no effect on compaction

32.

What type of soil has small pore spaces?

a)

silt soils

b)

clay soils

c)

sandy soils

33.

What kind of erosion removes a thin layer of soil?

a)

sheet

b)

gully

c)

rill

d)

splash

34.

Runoff decreases as ______ increases.

a)

slope

b)

surface residue

c)

ET

d)

precipitation

35.

The structure labeled 100 refers to what female part of a complete flower?

a)

petal

b)

style

c)

pistil

d)

stigma

e)

ovary

36.

Alfalfa's appropriate stage of maturity for harvest

a)

Blooms emerged

b)

1/4 to 1/2 bloom

c)

bud to 1/10th bloom

d)

late boot stage

e)

seed heads emerged

37.

Any factor that ________ runoff and ________ surface protection, increases erosion.

a)

increases, decreases

b)

decreases, increases

c)

increases, increases

d)

decreases, decreases

38.

Seeding rate is ______ plant population.

a)

less than or equal to

b)

always less than

c)

always more than

d)

equal to

39.

Which would you do first if a pesticide spill occurs?

a)

control the spill

b)

contain the spill

c)

cleanup the spill

d)

call the emergency coordinator

40.

Field are fallow to conserve ______.

a)

water

b)

pesticides

c)

energy

d)

nutrients

41.

At what moisture content would you want to sell soybeans?

a)

18%

b)

13%

c)

25%

d)

10%

42.

The structure labeled 96 refers to what part of a complete flower?

a)

sepal

b)

filament

c)

stamen

d)

petal

e)

anther

43.

is used to locate a position in a field

a)

GPS

b)

GIS

c)

GUS

d)

UPS

44.

Wheat planting should be delayed after the “fly–free” (Hessian fly) date that ranges from _________ at the Iowa line to __________ at the Arkansas line.

a)

Oct 8 and Sept 14

b)

Sept 28 and Oct 17

c)

Oct 1 and Sept 1

d)

Sept 10 and Oct 10

45.

A limitation of GM (Genetically Modified) plants is

a)

a lack of tolerance to wet soils

b)

high fertilizer needs

c)

a short stature

d)

a lack of marketability in some countries

46.

The keys to reducing the amounts of fertilizer nitrogen entering ground and surface waters are to _______ crop uptake and to _____ loss pathways such as leaching and runoff.

a)

maximize, minimize

b)

maximize, maximize

c)

minimize, minimize

d)

maximize, maximize

47.

Which of the following factors is usually most important in determining when to plant?

a)

soil pH

b)

soil moisture

c)

soil aeration

d)

seeding rate

48.

There is a lot of talk in the news about “Glyphosate Resistant Horseweed”. What caused this to happen?

a)

using generic glyphosate

b)

not rotating crops

c)

using glyphosate every year on the same field

d)

rotating herbicides

49.

The structure labeled 98 refers to what female part of a complete flower?

a)

ovary

b)

stigma

c)

pistil

d)

petal

e)

style

50.

What type of soil has large pore spaces?

a)

silt soils

b)

sandy soils

c)

clay soils

51.

are used to maintain natural enemies of insect pests.

a)

GM organisms

b)

disinfectants

c)

refuges

d)

insecticides

52.

What is the most specific level of classification of plants and animals?

a)

Kingdom

b)

Species

c)

Class

d)

Division

53.

How many acres are in the S 1/2, of the S1/2 of Section 29?

a)

40

b)

160

c)

60

d)

80

54.

The Universal Soil Loss Equation, A=RKLSCP uses many factors to calculate soil erosion. What does R stand for in the equation?

a)

conservation practice factor

b)

tolerance factor

c)

rainfall factor

d)

soil erodibility factor

55.

In the standard germination test, viable seeds _ .

a)

mold

b)

germinate

c)

turn blue

d)

stay dormant

56.

Which of the following site characteristics increases the potential for soil and water pollution by a pesticide?

a)

high organic soil matter

b)

clay texture

c)

a deep water table

d)

high erosion

57.

Advantages of starter fertilizer include ____.

a)

less erosion

b)

more vigorous stand

c)

lower irrigation costs

d)

Less weed infestation

58.

What is Bt corn?

a)

corn that has been treated with a certain insecticide

b)

corn that has been left too long in the grain dryer and has lost quality

c)

corn that is no longer available to commercial growers

d)

corn that has been genetically modified to protect itself from insects by producing a larvae killing compound

59.

At what growth stage are soybeans most sensitive to moisture stress?

a)

vegetative

b)

pod development

c)

physiological maturity

d)

flowering

e)

flowering and pod development

60.

A local expert trained to aid the producer in making cotton production decisions is called a ________________

a)

crop expert

b)

cotton picker

c)

cotton buyer

d)

cotton consultant

61.

Acute pesticide poisoning is how poisonous a pesticide is to humans after ____ exposure(s).

a)

one

b)

two

c)

five

d)

repeated

62.

Timothy's appropriate stage of maturity for harvest

a)

seed heads emerged

b)

late boot stage

c)

1/4 to 1/2 bloom

d)

blooms emerged

e)

bud to 1/10th bloom

63.

What type of soil gradually absorbs nutrients?

a)

sandy soils

b)

clay soils

c)

silt soils

64.

The structure labeled 94 referes to what male part of a complete flower?

a)

anther

b)

stamen

c)

sepal

d)

filament

e)

petal

65.

The structure labeled 97 refers to what female part of a complete flower?

a)

style

b)

stigma

c)

ovary

d)

pistil

e)

petal

66.

From what kind of wheat do you make spaghetti, macaroni, and noodles?

a)

soft red winter

b)

hard red winter

c)

white

d)

duram

e)

hard red spring

67.

Which of the following increases soil water storage?

a)

evapotranspiration

b)

deep percolation

c)

runoff

d)

precipitation

68.

What type of soil has nutrients held tightly?

a)

silt soils

b)

clay soils

c)

sandy soils

69.

What type of soil has hit water-holding capacity

a)

silt soils

b)

clay soils

c)

sandy soils

70.

If a nutrient is released to the soil during the decomposition of an organic mineral, ____________ has occurred.

a)

mineralization

b)

antagonism

c)

soil mining

d)

immobilization

71.

Which of the following characteristics are used to identify grass weed seedlings?

a)

pubescent cotyledons

b)

leaf arrangement

c)

simple versus compound leaf

d)

presence or absence of ligules

72.

Organic solutes tend to move more slowly in soils as soil content increases.

a)

oxygen

b)

gravel

c)

sand

d)

organic matter

73.

Which of the following factors allow a pest to overcome host plant resistance?

a)

pest genetic diversity

b)

good fertility

c)

timely planting

d)

narrow pest gene pool

74.

Starter fertilizer is commonly recommended for

a)

all crops

b)

pastures

c)

no-till

d)

clean-till

75.

Which of the following helps weeds survive and be competitive?

a)

low seed production

b)

lack of seed dormancy

c)

high growth rate

d)

lack of shade tolerance

76.

Pollination is in an open-pollinated variety

a)

artificial

b)

negligible

c)

controlled

d)

natural

77.

A plant that lives 10 years is classified as a _.

a)

perennial

b)

summer annual

c)

winter annual

d)

biennial

78.

What type of soil has low water-holding capacity?

a)

sandy soils

b)

silt soils

c)

clay soils

79.

Seedling emergence is hindered by __________.

a)

warm weather

b)

deep water tables

c)

surface crusting

d)

plow pans

80.

Which of the following must exist for ET to occur?

a)

relative humidity gradient

b)

sun spots

c)

wind

d)

high temperature

81.

Red Clover's appropriate stage of maturity for harvest

a)

blooms emerged

b)

1/4 to 1/2 bloom

c)

seed heads emerged

d)

bud to 1/10th bloom

e)

late boot stage

82.

By what method(s) is rice planted?

a)

drilled-seeded and planted in 30 inch rows

b)

drill-seeded

c)

drill-seeded and water-seeded

d)

water-seeded

e)

planted in 30 inch rows

83.

If a legume is grown in rotation with a grain crop, the nitrogen fertilizer rate for the grain crop will be as compared to a monoculture of the grain crop.

a)

unchanged

b)

eliminated

c)

increased

d)

reduced

84.

If a forage has cells with thin walls what would you expect to find in the hay analysis?

a)

high N.D. Fiber

b)

low A.D. Fiber and N.D. Fiber

c)

low A.D. Fiber

d)

high A.D. Fiber and N.D. Fiber

85.

Which of these crops is/are usually grown as hybrid/s?

a)

corn and grain sorghum

b)

grain sorghum

c)

corn and soybean

d)

soybean

e)

corn

86.

The stable form of organic matter is called ____.

a)

humus

b)

fulvic acid

c)

pumice

d)

illite

87.

Crop root growth can be affected by ____________.

a)

insects

b)

diseases

c)

acid soil

d)

all of these

88.

What type of soil has the best water-holidng capacity?

a)

clay soil

b)

silt soils

c)

sandy soils

89.

Over application of phosphorus is often the result of using for fertilizer.

a)

10-20-10

b)

animal manures

c)

potash

d)

34-0-0

90.

What is the majority – 60%, of the corn produced in the United States used for?

a)

plastics

b)

corn flakes

c)

animal feed

d)

ethanol

91.

Which of the following is LEAST helpful in identifying a pest?

a)

pest characteristics

b)

soil series

c)

crop

d)

symptoms and patterns of damage

92.

Sunflower heads move toward the sun. This is an example of _____.

a)

osmosis

b)

phototropism

c)

photoperiodism

d)

photosynthesis

93.

Which of the following is not true?

a)

hard wheat is coarser than soft wheat

b)

soft wheat granules are harder to control and will clog flour sifters

c)

soft wheat is used mainly for cookies, cakes and doughnuts

d)

most bread is made from soft wheat

94.

Respiration produces carbon dioxide, water and ___.

a)

Glucose

b)

Carbon dioxide

c)

Energy

d)

Oxygen

95.

A condition which favors symbiotic nitrogen fixation is _____________?

a)

low soil nitrate

b)

low soil pH

c)

wet soil

d)

molybdenum deficiency

96.

The structure labeled 93 referes to what male part of a complete flower

a)

anther

b)

sepal

c)

filament

d)

stamen

e)

petal

97.

What type of soil has a mixture of pore spaces?

a)

sandy soils

b)

clay soils

c)

silt soils

98.

Crop sensitivity to a pesticide can vary with ____.

a)

resistance

b)

soil humidity

c)

persistence

d)

crop growth stage

99.

Yield monitors are ___________________.

a)

used to estimate crop yields prior to harvest

b)

used to estimate yield variation within a field

c)

always compatible with mapping software

d)

independent of combine speed

100.

In most situations, surface soil ______________ will be lower after water erosion occurs.

a)

clay content

b)

pH

c)

CEC

d)

organic matter content

101.

What would be a good final corn population (plants/acre)?

a)

60,000

b)

30,000

c)

120,000

d)

15,000

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