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Crops > Chapter 14 > Flashcards

Chapter 14 Flashcards

1
Q

The incorporation of plant residues into soil increases their rate of decay

A

True

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2
Q

Moldboard plowing leaves adequate residue cover top protect the soil

A

False

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3
Q

Excessive plowing can lead to the loss of organic matter

A

True

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4
Q

Primary tillage smoothes the seedbed for planting

A

False

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5
Q

Conventional tillage requires less time and energy than conversation tillage

A

False

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6
Q

No-till is commonly used on wet soils in northern regions

A

False

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7
Q

A benefit to the ridge till system is earlier planting

A

True

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8
Q

Fall plowing can facilitate earlier planting

A

True

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9
Q

Good soil-to-seed contact is important for planting success

A

True

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10
Q

Oxygen is no a factor in seed germination

A

False

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11
Q

Light is a requirement for germination for most crop species

A

True

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12
Q

The mechanism of dormancy can result in germination being staggered over years

A

True

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13
Q

Seed of some cereal crops undergoes after-ripening before germination

A

True

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14
Q

The initiation of metabolic processes int he seed occurs after germination

A

False

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15
Q

At low seeding rates, plant populations are not utilizing resources optimally

A

True

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16
Q

Typical row spacing of corn and soybean have increased since the 1950s

A

False

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17
Q 
On approximately how much planted land is conventional tillage used in the United States? 
        A. 1/10 
        B. 1/4
        C. 1/3
        D. 1/2
A

B. 1/4

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18
Q 
Which piece of equipment shears off sections of soil and flips them over? 
        A. Chisel Plow 
        B. Moldboard Plow 
        C. Cultivator 
        D. Disk Plow
A

B. Moldboard Plow

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19
Q 
How much residue does moldboard plowing typically leave? 
        A. 0 to 15 percent 
        B. 10 to 25 percent 
        C. 20 to 30 percent 
        D. greater than 30 percent
A

B. 10 to 25 percent

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20
Q 
Which of the following crops leaves the most residue after harvest? 
        A. Wheat
        B. Soybean 
        C. Corn 
        D. Barley
A

C. Corn

21
Q

Most farmers get their seed by:
A. Trading with neighbors
B. Buying with private seed companies
C. Purchasing from land-grant universities
D. Saving from the previous year

A

B. Buying with private seed companies

22
Q 
Seed planted too deep will: 
        A. Exhaust their energy reserves 
        B. Dry out and die
        C. Emerge too early 
        D. Take up too much nitrogen
A

A. Exhaust their energy reserves

23
Q 
The general rule for planting depth is to go no deeper than: 
        A. Twice the seed diameter 
        B. Five times the seed diameter 
        C. 10 times the seed diameter 
        D. 20 times the seed diameter
A

C. 10 times the seed diameter

24
Q 
Which crop is more likely to be negatively affected by crusting of the soil surface? 
        A. Soybean 
        B. Corn 
        C. Wheat 
        D. Oats
A

A. Soybean

25
Q 
In which soil should seed be planted the deepest?
        A. Clay 
        B. Silt 
        C. Loam 
        D. Sand
A

D. Sand

26
Q 
Dormant seeds usually have around what percentage of moisture? 
        A. 5 percent 
        B. 15 percent 
        C. 30 percent 
        D. 50 percent
A

B. 15 percent

27
Q 
Hard seed is an example of what type of barrier to germination? 
        A. Physical 
        B. Chemical 
        C. Age 
        D. Physiological
A

A. Physical

28
Q 
Hard seed must undergo what process before planting? 
        A. Storing 
        B. Chilling 
        C. Heating 
        D. Scarification
A

D. Scarification

29
Q 
Broadcast seeding is most likely to be used with which of the following crops? 
        A. Corn 
        B. Soybean 
        C. Alfalfa 
        D. Field Bean
A

C. Alfalfa

30
Q 
Which of the following would most likely be used to plant a restored prairie? 
        A. Cultipacker Seeder
        B. Grain Drill 
        C. No-Till Grassland Drill 
        D. Row Crop Planter
A

C. No-Till Grassland Drill

31
Q 
Which of the following would most likely be used to plant corn? 
        A. Cultipacker Seeder 
        B. Grain Drill 
        C. No-Till Grassland Drill 
        D. Row Crop Planter
A

D. Row Crop Planter

32
Q 
Which of the following would be planted earliest in the year? 
        A. Corn 
        B. Small Grains 
        C. Cotton 
        D. Soybean
A

B. Small Grains

33
Q

_______ is the percentage of soil surface covered with remains of the last crop

A

Residue

34
Q

_______ tillage leaves a minimum of 30 percent residue

A

Conservation

35
Q

The primary tillage implement used in mulch tillage is the _______

A

Chisel Plow

36
Q

The system where planters with disk openers slice through crop residues and deposit the seed is called _______

A

No-Till

37
Q

The system that involves tilling a narrow 8- to 12-inch band in corp residue in the fall and planting the row crop the following spring is called _______

A

Ridge

38
Q

The process that ensures genetic integrity and quality of seed is called _______

A

Seed Certification

39
Q

_______ referes to seed viability and purity

A

Pure Live Seed (PLS)

40
Q

_______ is the failure of a seed to germinate despite having all the required factors for germination met

A

Dormancy

41
Q

The two equipment methods of seeding are ______ and _______

A

Broadcasting and Drilling

42
Q

_______ seeding is broadcast seeding of a corp when the ground is frozen

A

Frost

43
Q

Wheat

A

40-50 degrees F (4-10 degrees C)

44
Q

Soybean

A

50-60 degrees F (10-16 degrees C)

45
Q

Corn

A

50-60 degrees F (10-16 degrees C)

46
Q

Alfalfa

A

40-50 degrees F (4-10 degrees C)

47
Q

Rice

A

50-60 degrees F (10-16 degrees C)

48
Q

Flax

A

40-50 degrees F (4-10 degrees C)

Crops (14 decks)

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