Question 1

The P factor in the Universal soil-loss equation is concerned with all but one of the following:

Accepted Answer

A)  contour tillage 
B)  strip-cropping 
C)  soil erodibility 
D)  terraces 
E)  vegetative covers 
A)  contour tillage 
B)  strip-cropping 
C)  soil erodibility 
D)  terraces 
E)  vegetative covers C

Question 2

Ridge-till systems show promise in the management of somewhat poorly drained soils of the Midwest.

Accepted Answer

A) True 
 B)False  True

Question 3

On which of the land use capability classes is suggested use restricted to non-production purposes, only wildlife and recreational purposes being appropriate?

Accepted Answer

A)  I 
B)  II 
C)  VI 
D)  IV 
E)  VIII 
A)  I 
B)  II 
C)  VI 
D)  IV 
E)  VIII E

Question 4

Wind erosion accounts for about what percent of the total soil erosion losses in the United States?

Accepted Answer

A)  5% 
B)  10% 
C)  20% 
D)  35% 
E)  75% 
A)  5% 
B)  10% 
C)  20% 
D)  35% 
E)  75%

Question 5

Slope length is generally of greater significance in determining erosion rate than is steepness of slope.

Accepted Answer

A) True 
 B)False

Question 6

Yields of row crops on poorly drained soils are generally somewhat higher with no-tillage systems than with conventional tillage systems.

Accepted Answer

A) True 
 B)False

Question 7

The surface soil pH is generally higher on no-tillage plots than on comparable conventionally tilled plots.

Accepted Answer

A) True 
 B)False

Question 8

"Living" terraces involving rows of deep rooted grasses planted on the contour would be considered as contributing to which factor in the Universal soil-loss equation?

Accepted Answer

A)  R 
B)  K 
C)  L 
D)  S 
E)  P 
A)  R 
B)  K 
C)  L 
D)  S 
E)  P

Question 9

The effects of conservation tillage on soil erosion would be more pronounced in fields cropped continuously to corn than in fields cropped to soybean.

Accepted Answer

A) True 
 B)False

Question 10

Conservation tillage systems are said to have all of the following advantages but one over conventional tillage systems

Accepted Answer

A)  its labor and energy requirements are lower 
B)  it encourages higher microbial population numbers in the soil 
C)  it involves the use of less toxic weed control practices 
D)  it increases the hydraulic conductivity of the soil 
E)  it reduces soil erosion 
A)  its labor and energy requirements are lower 
B)  it encourages higher microbial population numbers in the soil 
C)  it involves the use of less toxic weed control practices 
D)  it increases the hydraulic conductivity of the soil 
E)  it reduces soil erosion

Question 11

The T values are the maximum losses of soil by erosion that can be tolerated without a reduction in the soil's long term productivity.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following statements about soil erosion is not true?

Accepted Answer

A)  Soil erosion losses per hectare of cropped land are higher in Asia and Africa than the United States. 
B)  The rate of soil erosion loss in the United States declined from 1980 to 1995. 
C)  Downstream off-site costs of erosion are often higher than those in upstream fields from which the soil came. 
D)  Soil erosion losses of potassium exceed those of nitrogen and phosphorus. 
E)  Less than 20 percent of the total soil erosion in the United States comes from croplands. 
A)  Soil erosion losses per hectare of cropped land are higher in Asia and Africa than the United States. 
B)  The rate of soil erosion loss in the United States declined from 1980 to 1995. 
C)  Downstream off-site costs of erosion are often higher than those in upstream fields from which the soil came. 
D)  Soil erosion losses of potassium exceed those of nitrogen and phosphorus. 
E)  Less than 20 percent of the total soil erosion in the United States comes from croplands.

Question 13

The key to preventing soil erosion by water on both farmland and landscaping job sites is ____.

Accepted Answer

A)  To keep the soil surface covered with vegetation. 
B)  To provide adequate surface and subsurface drainage. 
C)  To grade or till the soil until a smooth surface is achieved. 
D)  To keep the soil moist (with irrigation if necessary). 
E)  To practice good landscape sanitation by clearing away any weeds and old plant residues. 
A)  To keep the soil surface covered with vegetation. 
B)  To provide adequate surface and subsurface drainage. 
C)  To grade or till the soil until a smooth surface is achieved. 
D)  To keep the soil moist (with irrigation if necessary). 
E)  To practice good landscape sanitation by clearing away any weeds and old plant residues.

Question 14

In explaining erosion processes to a friend, which of the following would you say about accelerated erosion?

Accepted Answer

A)  It refers to sediment carried by water flowing at ever greater velocity. 
B)  It involves a much less rapid process than geological erosion. 
C)  It is greatly enhanced by the splash effect of raindrops impacting bare soil. 
D)  It is increasing in intensity in the United States, especially in the past 10 years. 
E)  it removes more nitrogen from the surface soil than calcium 
A)  It refers to sediment carried by water flowing at ever greater velocity. 
B)  It involves a much less rapid process than geological erosion. 
C)  It is greatly enhanced by the splash effect of raindrops impacting bare soil. 
D)  It is increasing in intensity in the United States, especially in the past 10 years. 
E)  it removes more nitrogen from the surface soil than calcium

Question 15

The Revised Universal Soil-Loss Equation (RUSLE) is more site-specific, more accurate in predicting soil loss, and more quickly compares alternative procedures than does USLE.

Accepted Answer

A) True 
 B)False

Question 16

Hydraulic conductivity is commonly higher in soils on which conventional tillage systems have been used than where no-tillage systems have been followed.

Accepted Answer

A) True 
 B)False

Question 17

The universal soil-loss equation (USLE) suggests that soil erosion loss is a product of all but one of the following factors:

Accepted Answer

A)  soil drainage 
B)  climate 
C)  slope length 
D)  sloped steepness 
E)  vegetative cover 
A)  soil drainage 
B)  climate 
C)  slope length 
D)  sloped steepness 
E)  vegetative cover

Question 18

A soil has been managed using a no-till system for 10 years following many years of conventional tillage operations. Which of the following changes in surface soil properties would you expect due to the no-till management system?

Accepted Answer

A)  the earthworm population would decline 
B)  soil pH would increase 
C)  aggregate stability would decline 
D)  organic matter content would increase 
E)  bulk density would increase 
A)  the earthworm population would decline 
B)  soil pH would increase 
C)  aggregate stability would decline 
D)  organic matter content would increase 
E)  bulk density would increase

Question 19

Which of the following statements is true?

Accepted Answer

A)  Sheet erosion is most obvious from a distance. 
B)  Gully erosion carries the most sediment away from lands in the United States. 
C)  Rill erosion is the most serious in forested areas. 
D)  Rill erosion is initiated before water concentrates in small 1-2 cm channels. 
E)  Rill erosion channels can be removed by ordinary cultivation. 
A)  Sheet erosion is most obvious from a distance. 
B)  Gully erosion carries the most sediment away from lands in the United States. 
C)  Rill erosion is the most serious in forested areas. 
D)  Rill erosion is initiated before water concentrates in small 1-2 cm channels. 
E)  Rill erosion channels can be removed by ordinary cultivation.

Question 20

Which of the USDA land use capability classes (LUC) is most suitable for the production of row crops?

Accepted Answer

A)  I 
B)  II 
C)  VI 
D)  IV 
E)  VIII 
A)  I 
B)  II 
C)  VI 
D)  IV 
E)  VIII

The P factor in the Universal soil-loss equation is concerned with all but one of the following:

Ridge-till systems show promise in the management of somewhat poorly drained soils of the Midwest.

On which of the land use capability classes is suggested use restricted to non-production purposes, only wildlife and recreational purposes being appropriate?

Wind erosion accounts for about what percent of the total soil erosion losses in the United States?

Slope length is generally of greater significance in determining erosion rate than is steepness of slope.

Yields of row crops on poorly drained soils are generally somewhat higher with no-tillage systems than with conventional tillage systems.

The surface soil pH is generally higher on no-tillage plots than on comparable conventionally tilled plots.

"Living" terraces involving rows of deep rooted grasses planted on the contour would be considered as contributing to which factor in the Universal soil-loss equation?

The effects of conservation tillage on soil erosion would be more pronounced in fields cropped continuously to corn than in fields cropped to soybean.

Conservation tillage systems are said to have all of the following advantages but one over conventional tillage systems

The T values are the maximum losses of soil by erosion that can be tolerated without a reduction in the soil's long term productivity.

Which of the following statements about soil erosion is not true?

The key to preventing soil erosion by water on both farmland and landscaping job sites is ____.

In explaining erosion processes to a friend, which of the following would you say about accelerated erosion?

The Revised Universal Soil-Loss Equation (RUSLE) is more site-specific, more accurate in predicting soil loss, and more quickly compares alternative procedures than does USLE.

Hydraulic conductivity is commonly higher in soils on which conventional tillage systems have been used than where no-tillage systems have been followed.

The universal soil-loss equation (USLE) suggests that soil erosion loss is a product of all but one of the following factors:

A soil has been managed using a no-till system for 10 years following many years of conventional tillage operations. Which of the following changes in surface soil properties would you expect due to the no-till management system?

Which of the following statements is true?

Which of the USDA land use capability classes (LUC) is most suitable for the production of row crops?

The Soils Around Us

Formation of Soils From Parent Materials

Soil Classification

Soil Architecture and Physical Properties

Soil Water: Characteristics and Behavior

Soil and the Hydrologic Cycle

Soil Aeration and Temperature

The Colloidal Fraction: Seat of Soil Chemical and Physical Activity

Soil Acidity, Alkalinity, Aridity and Salinity

Organisms and Ecology of the Soil

Soil Organic Matter Overview

Nutrient Cycles and Soil Fertility

Practical Nutrient Management

Soils and Chemical Pollution

Filters

Exam 14: Soil Erosion and Its Control

The P factor in the Universal soil-loss equation is concerned with all but one of the following:

Ridge-till systems show promise in the management of somewhat poorly drained soils of the Midwest.

On which of the land use capability classes is suggested use restricted to non-production purposes, only wildlife and recreational purposes being appropriate?

Wind erosion accounts for about what percent of the total soil erosion losses in the United States?

Slope length is generally of greater significance in determining erosion rate than is steepness of slope.

Yields of row crops on poorly drained soils are generally somewhat higher with no-tillage systems than with conventional tillage systems.

The surface soil pH is generally higher on no-tillage plots than on comparable conventionally tilled plots.

"Living" terraces involving rows of deep rooted grasses planted on the contour would be considered as contributing to which factor in the Universal soil-loss equation?

The effects of conservation tillage on soil erosion would be more pronounced in fields cropped continuously to corn than in fields cropped to soybean.

Conservation tillage systems are said to have all of the following advantages but one over conventional tillage systems

The T values are the maximum losses of soil by erosion that can be tolerated without a reduction in the soil's long term productivity.

Which of the following statements about soil erosion is not true?

The key to preventing soil erosion by water on both farmland and landscaping job sites is ____.

In explaining erosion processes to a friend, which of the following would you say about accelerated erosion?

The Revised Universal Soil-Loss Equation (RUSLE) is more site-specific, more accurate in predicting soil loss, and more quickly compares alternative procedures than does USLE.

Hydraulic conductivity is commonly higher in soils on which conventional tillage systems have been used than where no-tillage systems have been followed.

The universal soil-loss equation (USLE) suggests that soil erosion loss is a product of all but one of the following factors:

A soil has been managed using a no-till system for 10 years following many years of conventional tillage operations. Which of the following changes in surface soil properties would you expect due to the no-till management system?

Which of the following statements is true?

Which of the USDA land use capability classes (LUC) is most suitable for the production of row crops?

The Soils Around Us

Formation of Soils From Parent Materials

Soil Classification

Soil Architecture and Physical Properties

Soil Water: Characteristics and Behavior

Soil and the Hydrologic Cycle

Soil Aeration and Temperature

The Colloidal Fraction: Seat of Soil Chemical and Physical Activity

Soil Acidity, Alkalinity, Aridity and Salinity

Organisms and Ecology of the Soil

Soil Organic Matter Overview

Nutrient Cycles and Soil Fertility

Practical Nutrient Management

Soils and Chemical Pollution

Filters