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Crops > Chapter 17 > Flashcards

Chapter 17 Flashcards

1
Q

A bushel of corn or soybean weighs 60 pounds (27 kilograms)

A

False

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2
Q

Seeds at physiological maturity are dry enough for storage

A

False

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3
Q

Generally when soybeans are harvested, the leaves have fallen off the plants

A

True

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4
Q

After combining, grain is clean of residue

A

True

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5
Q

Above-optimum moisture levels in seeds increase the rate of respiration

A

True

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6
Q

Grain Storage always improves grain quality

A

False

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7
Q

The decision to dry grain crops artificially versus naturally can be dependent on energy prices

A

True

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8
Q

Harvest forages generally contain mature seed

A

False

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9
Q

Silage yields are usually up to 50% higher per acre than hay yields

A

True

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10
Q

High cell wall content is associated with increased intake and digestibility

A

False

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11
Q

Many modern beef and dairy operations rely more on stored grains than on grazing to feed livestock

A

True

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12
Q

The process of fermentation during silage production turns lactic acid into glucose

A

False

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13
Q

Cotton is mature when the bolls being to close

A

False

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14
Q

Sugar content is the most important quality of sugar beets

A

True

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15
Q

Potato size is the main determinant in harvesting

A

True

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16
Q 
Corn is typically harvested at grain moisture levels of: 
        A. 13 Percent 
        B. 20 Percent 
        C. 25 Percent 
        D. 33 Percent
A

C. 25 Percent

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17
Q 
Soybean is typically harvested at grain moisture levels of: 
        A. 13 Percent 
        B. 20 Percent 
        C. 25 Percent 
        D. 33 Percent
A

A. 13 Percent

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18
Q 
Swathing would most likely be part of harvesting for which crop? 
        A. Corn
        B. Oats 
        C. Soybean
        D. Sugar Beet
A

B. Oats

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19
Q 
Manual harvesting of grains was first replaces by which machine? 
        A. Combine 
        B. Reaper 
        C. Binder 
        D. Cradle
A

B. Reaper

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20
Q 
The minimum temperature for storage fungi growth is: 
        A. 20 Degrees 
        B. 30 Degrees 
        C. 40 Degrees 
        D. 50 Degrees
A

C. 40 Degrees

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21
Q 
The most frequent cause of loss during grain storage is: 
        A. Insects 
        B. Fungi 
        C. Rodents 
        D. Bacteria
A

B. Fungi

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22
Q 
The loss of forage nutrients during harvest frequently can be up to: 
        A. 5 Percent 
        B. 25 Percent 
        C. 40 Percent 
        D. 60 Percent
A

B. 25 Percent

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23
Q 
Forage feeding value is described as: 
        A. Forage Quality 
        B. Intake 
        C. Nutritive Value 
        D. Antiquality Factors
A

A. Forage Quality

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24
Q 
Thorns would be categorized as which of the following? 
        A. Forage Quality 
        B. Intake 
        C. Nutritive Value 
        D. Antiquality Value
A

D. Antiquality Value

25
Q

As the crop matures from vegetative to flowering stages, which of the following occurs?
A. Forage yield decreases and forage quality decreases
B. Forage yield decreases and forage quality increases
C. Forage yield increases and forage quality increases
D. Forage yield increases and forage quality decreases

A

D. Forage yield increases and forage quality decreases

26
Q 
The stocking rate is: 
        A. Number of paddocks in a pasture 
        B. Amount of hay in a bale 
        C. Amount of silage in a silo 
        D. Animals on pasture per acre
A

D. Animals on pasture per acre

27
Q 
The leading hay crop in the United States is: 
        A. Smooth Bromegrass 
        B. Red Clover 
        C. Alfalfa 
        D. Timothy
A

C. Alfalfa

28
Q 
Drying hay in the field takes about how many days? 
        A. 1 to 5 
        B. 6 to 10 
        C. 11 to 15 
        D. Over 15
29
Q 
What is the most important determinant of quality in  tobacco crop? 
        A. Leaf Color 
        B. Nicotine Content 
        C. Grain Yield 
        D. Moisture Content
A

B. Nicotine Content

30
Q

At the end of the season, the completion of the production cycle for a crop is the _______

31
Q

_______ is an old English term that describes a unit of volume for measuring crop yield

32
Q

__________ is the stage of development in grains when the maximum accumulation of dry matter in the seed occurs

A

Physiological Matter

33
Q

__________ is the moisture content of the crop when grain can be harvested with a combine with minimum field loss

A

Harvest Maturity

34
Q

_______ is when crop plants fall over in the field

35
Q

_______ is the process of shelling grain

36
Q

Tied bundles of small grains are called _______ and tied bundles of corn are called _______

A

Sheares and Shocks

37
Q

After removal of the ears of corn, the remaining stalks, leaves and husks are called _______

38
Q

_______ agriculture is the use of computers sensing and data collection equipment to allow for accurate, site-specific management decisions

39
Q

The toxic compounds that storage fungi can form are called ________

A

Mycotoxins

40
Q

The vegetative portion of plants used for livestock feed are ________

41
Q

The three components of forage quality are _______, ______, and ________

A

Intake, Nutritive Value and Antiquality Factor

42
Q

________ of forages is the direct utilization of forages by grazing animals in the field

43
Q

________ grazing is the system where animals have a large pasture and move about freely. ________ grazing is where pasture is divided into paddocks and grazing is controlled

A

Continuous and Rotational

44
Q

The two types of grazing lands are _______ and ______

A

Pasture and Rangeland

45
Q

Cotton can be harvested using a ______ or a _______

A

Picker or Stripper

46
Q

_______ are rows of cut forage fluffed to increase air flow

47
Q

High-moisture forage that is stored anaerobically is called ______

48
Q

Stems have leaves but NO flowers

A

Vegetative

49
Q

Stems have flower buds but none are open

50
Q

Flowers are open

51
Q

Flowers have pollinated and set seed

52
Q

Plant has only leaves

A

Vegetative

53
Q

Stems have elongated, but NO flowers have formed

A

Stem Elongation

54
Q

Inflorescence is enclosed in sheath of the last leaf

55
Q

Grasses are pollinating

56
Q

Mature seed is present

57
Q

80 to 85 Percent

A

Direct Cut

58
Q

60 to 75 Percent

59
Q

40 to 60 Percent

Crops (14 decks)

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