Question 1

You would be most likely to find P deficient plants in which location?

Accepted Answer

A)  a vegetable garden in India 
B)  a corn field in sub-Saharan Africa 
C)  a pasture in the Netherlands 
D)  a Douglas Fir forest in Oregon 
E)  an apple orchard in New York. 
A)  a vegetable garden in India 
B)  a corn field in sub-Saharan Africa 
C)  a pasture in the Netherlands 
D)  a Douglas Fir forest in Oregon 
E)  an apple orchard in New York.

Question 2

Leguminous forest trees, such as Locust, enrich the soil in nitrogen, to the benefit of non- nitrogen fixing plants growing nearby.

Accepted Answer

A) True 
 B)False

Question 3

Compared to the same soil used for cropland, a forested soil would be expected to lose _____ total P to streams draining the watershed.

Accepted Answer

A)  less 
B)  about the same amount of 
C)  more 
A)  less 
B)  about the same amount of 
C)  more

Question 4

In an alkaline soil, much of the iron in most iron chelates is rapidly replaced in the chelate complex by which other metallic nutrient?

Accepted Answer

A)  Ca 
B)  Zn 
C)  Mn 
D)  Cu 
E)  K 
A)  Ca 
B)  Zn 
C)  Mn 
D)  Cu 
E)  K

Question 5

In what range of soil pH is phosphorus generally most available to plants?

Accepted Answer

A)  3.5-4.5 
B)  4.5-5.5 
C)  5.5-7.0 
D)  7.0-8.0 
E)  >8.0 
A)  3.5-4.5 
B)  4.5-5.5 
C)  5.5-7.0 
D)  7.0-8.0 
E)  >8.0

Question 6

Forests in decline because of acid deposition can often be brought back to high productivity with just a few applications of nitrogen fertilizer.

Accepted Answer

A) True 
 B)False

Question 7

The sulfur dioxide in the atmosphere ______.

Accepted Answer

A)  can be an important source of sulfur nutrition for plants 
B)  is a major contributor to "acid rain" 
C)  comes from fires such as fossil fuel burning, volcanoes and forest fires 
D)  all of the above 
E)  none of the above 
A)  can be an important source of sulfur nutrition for plants 
B)  is a major contributor to "acid rain" 
C)  comes from fires such as fossil fuel burning, volcanoes and forest fires 
D)  all of the above 
E)  none of the above

Question 8

Which of the following nutrient elements is usually present in the soil solution as a simple cation?

Accepted Answer

A)  B 
B)  Zn 
C)  Cl 
D)  Mo 
E)  all of the above 
A)  B 
B)  Zn 
C)  Cl 
D)  Mo 
E)  all of the above

Question 9

Grass clippings from a healthy lawn can be expected to contain approximately ___% N (on a dry weight basis).

Accepted Answer

A)  0.01 
B)  0.2 
C)  0.5 
D)  3.0 
E)  7.5 
A)  0.01 
B)  0.2 
C)  0.5 
D)  3.0 
E)  7.5

Question 10

The principal form of sulfur taken up by plants is ____.

Accepted Answer

A)  sulfate 
B)  sulfur esters 
C)  sulfides 
D)  elemental sulfur 
E)  gypsum 
A)  sulfate 
B)  sulfur esters 
C)  sulfides 
D)  elemental sulfur 
E)  gypsum

Question 11

Highly weathered soils low in available sulfur in their A horizons often have adequate supplies of available sulfur in deeper, clay-rich horizons.

Accepted Answer

A) True 
 B)False

Question 12

Methemoglobinemia is principally a potential threat to _____.

Accepted Answer

A)  babies drinking water high in sulfate 
B)  adults drinking water high in sulfate 
C)  babies drinking water high in nitrate 
D)  adults drinking water high in nitrate 
E)  all of the above 
A)  babies drinking water high in sulfate 
B)  adults drinking water high in sulfate 
C)  babies drinking water high in nitrate 
D)  adults drinking water high in nitrate 
E)  all of the above

Question 13

The opposite process from mineralization is _______.

Accepted Answer

A)  immobilization 
B)  nitrification 
C)  denitrification 
D)  ammonification 
E)  none of the above 
A)  immobilization 
B)  nitrification 
C)  denitrification 
D)  ammonification 
E)  none of the above

Question 14

Plants obtain nitrogen from the soil by taking up ______.

Accepted Answer

A)  soluble anions 
B)  soluble cations 
C)  soluble organic compounds 
D)  all of the above 
E)  none of the above 
A)  soluble anions 
B)  soluble cations 
C)  soluble organic compounds 
D)  all of the above 
E)  none of the above

Question 15

Simply spraying a solution to coat the seeds before planting often provides enough of which micronutrient to meet the needs of the crop?

Accepted Answer

A)  B 
B)  Mo 
C)  Cu 
D)  Mn 
E)  Zn 
A)  B 
B)  Mo 
C)  Cu 
D)  Mn 
E)  Zn

Question 16

About half the nitrogen in the A horizon of most soils becomes available to plants over the course of a whole year in a warm, humid climate.

Accepted Answer

A) True 
 B)False

Question 17

Compared to gypsum, elemental sulfur is sometimes considered a more desirable fertilizer material because _____

Accepted Answer

A)  plants respond to sulfur more rapidly 
B)  it is less dependent on warm, moist conditions for availability 
C)  it contains more nutrient sulfur, kilogram for kilogram, than gypsum 
D)  it causes less soil acidity than gypsum 
E)  all of the above 
A)  plants respond to sulfur more rapidly 
B)  it is less dependent on warm, moist conditions for availability 
C)  it contains more nutrient sulfur, kilogram for kilogram, than gypsum 
D)  it causes less soil acidity than gypsum 
E)  all of the above

Question 18

The great majority of nitrogen (95 to 98%) in soils can be found in the form of _____.

Accepted Answer

A)  primary minerals 
B)  secondary minerals 
C)  dissolved cations 
D)  dissolved anions 
E)  organic compounds 
A)  primary minerals 
B)  secondary minerals 
C)  dissolved cations 
D)  dissolved anions 
E)  organic compounds

Question 19

Applied to agricultural crops, the term lodging refers to ________.

Accepted Answer

A)  pre-mature fruit drop as a result of N deficiency 
B)  infestation with a high number of insect larvae lodged in the fruits or seeds 
C)  short, stubby plants starving for N or S 
D)  plants falling over, often as a result of too much N 
E)  plants losing their leaves because of a N imbalance 
A)  pre-mature fruit drop as a result of N deficiency 
B)  infestation with a high number of insect larvae lodged in the fruits or seeds 
C)  short, stubby plants starving for N or S 
D)  plants falling over, often as a result of too much N 
E)  plants losing their leaves because of a N imbalance

Question 20

In various parts of the world, soil phosphorus is associated with which of the following environmental problems?

Accepted Answer

A)  soil degradation because of depletion of soil phosphorus 
B)  eutrophication of lakes because of a build-up of soil P in the watersheds 
C)  toxic levels of phosphate in groundwater supplies 
D)  both A and B 
E)  all of the above 
A)  soil degradation because of depletion of soil phosphorus 
B)  eutrophication of lakes because of a build-up of soil P in the watersheds 
C)  toxic levels of phosphate in groundwater supplies 
D)  both A and B 
E)  all of the above

You would be most likely to find P deficient plants in which location?

Leguminous forest trees, such as Locust, enrich the soil in nitrogen, to the benefit of non- nitrogen fixing plants growing nearby.

Compared to the same soil used for cropland, a forested soil would be expected to lose _____ total P to streams draining the watershed.

In an alkaline soil, much of the iron in most iron chelates is rapidly replaced in the chelate complex by which other metallic nutrient?

In what range of soil pH is phosphorus generally most available to plants?

Forests in decline because of acid deposition can often be brought back to high productivity with just a few applications of nitrogen fertilizer.

The sulfur dioxide in the atmosphere ______.

Which of the following nutrient elements is usually present in the soil solution as a simple cation?

Grass clippings from a healthy lawn can be expected to contain approximately ___% N (on a dry weight basis).

The principal form of sulfur taken up by plants is ____.

Highly weathered soils low in available sulfur in their A horizons often have adequate supplies of available sulfur in deeper, clay-rich horizons.

Methemoglobinemia is principally a potential threat to _____.

The opposite process from mineralization is _______.

Plants obtain nitrogen from the soil by taking up ______.

Simply spraying a solution to coat the seeds before planting often provides enough of which micronutrient to meet the needs of the crop?

About half the nitrogen in the A horizon of most soils becomes available to plants over the course of a whole year in a warm, humid climate.

Compared to gypsum, elemental sulfur is sometimes considered a more desirable fertilizer material because _____

The great majority of nitrogen (95 to 98%) in soils can be found in the form of _____.

Applied to agricultural crops, the term lodging refers to ________.

In various parts of the world, soil phosphorus is associated with which of the following environmental problems?

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

Practical Nutrient Management

Soil Erosion and Its Control

Soils and Chemical Pollution

Filters

Exam 12: Nutrient Cycles and Soil Fertility

You would be most likely to find P deficient plants in which location?

Leguminous forest trees, such as Locust, enrich the soil in nitrogen, to the benefit of non- nitrogen fixing plants growing nearby.

Compared to the same soil used for cropland, a forested soil would be expected to lose _____ total P to streams draining the watershed.

In an alkaline soil, much of the iron in most iron chelates is rapidly replaced in the chelate complex by which other metallic nutrient?

In what range of soil pH is phosphorus generally most available to plants?

Forests in decline because of acid deposition can often be brought back to high productivity with just a few applications of nitrogen fertilizer.

The sulfur dioxide in the atmosphere ______.

Which of the following nutrient elements is usually present in the soil solution as a simple cation?

Grass clippings from a healthy lawn can be expected to contain approximately ___% N (on a dry weight basis).

The principal form of sulfur taken up by plants is ____.

Highly weathered soils low in available sulfur in their A horizons often have adequate supplies of available sulfur in deeper, clay-rich horizons.

Methemoglobinemia is principally a potential threat to _____.

The opposite process from mineralization is _______.

Plants obtain nitrogen from the soil by taking up ______.

Simply spraying a solution to coat the seeds before planting often provides enough of which micronutrient to meet the needs of the crop?

About half the nitrogen in the A horizon of most soils becomes available to plants over the course of a whole year in a warm, humid climate.

Compared to gypsum, elemental sulfur is sometimes considered a more desirable fertilizer material because _____

The great majority of nitrogen (95 to 98%) in soils can be found in the form of _____.

Applied to agricultural crops, the term lodging refers to ________.

In various parts of the world, soil phosphorus is associated with which of the following environmental problems?

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

Practical Nutrient Management

Soil Erosion and Its Control

Soils and Chemical Pollution

Filters