Question 1

Copper deficiency is most likely to occur under which of the following soil conditions?

Accepted Answer

A) soil with pH 4.3 and subject to frequent flooding 
B) well drained loamy sand Ultisol with pH 6.1 
C) silt loam soil with pH 7.0 
D) muck soil (Saprist) with pH 5.5 
E) poorly drained calcareous soil with pH 7.6 
A) soil with pH 4.3 and subject to frequent flooding 
B) well drained loamy sand Ultisol with pH 6.1 
C) silt loam soil with pH 7.0 
D) muck soil (Saprist) with pH 5.5 
E) poorly drained calcareous soil with pH 7.6 D

Question 2

It is common for some plants growing on a particular soil to suffer from a micronutrient deficiency while other plants growing on the same soil are well supplied with the nutrient in question.

Accepted Answer

A) True 
 B)False  True

Question 3

Which of the following nutrient elements is usually present in the soil solution as an undissociated acid?

Accepted Answer

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

Question 4

The data in the following Table suggest the occurrence of a positive synergism between two nutrients.

Accepted Answer

A) True 
 B)False

Question 5

The availability of which of the following micronutrients is commonly affected by soil redox potential?

Accepted Answer

A) manganese 
B) zinc 
C) cobalt 
D) boron 
E) all of the above 
A) manganese 
B) zinc 
C) cobalt 
D) boron 
E) all of the above

Question 6

Micronutrient deficiencies are more likely to occur where inorganic chemical fertilizers, rather than organic manures, have been used to stimulate vigorous plant growth.

Accepted Answer

A) True 
 B)False

Question 7

Mycorrhizae help plants overcome deficiencies of zinc, copper, and other micronutrients by increasing the plant uptake of these elements from soil.

Accepted Answer

A) True 
 B)False

Question 8

Histosols (organic soils) are typically well supplied with nitrogen and phosphorus but deficient in most micronutrients.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following micronutrients is least commonly found to be deficient in plants?

Accepted Answer

A) manganese 
B) iron 
C) copper 
D) boron 
E) chlorine 
A) manganese 
B) iron 
C) copper 
D) boron 
E) chlorine

Question 10

Plants generally convert oxidized iron to its reduced form by means of organic reducing agents before the iron is taken up or utilized by the plant.

Accepted Answer

A) True 
 B)False

Question 11

Boron is commonly deficient in acid soils because chemical reactions under acid conditions make it less available for plant uptake .

Accepted Answer

A) True 
 B)False

Question 12

Applying 10 kg/ha of which of the following nutrients would most likely cause toxicity to plants?

Accepted Answer

A) manganese 
B) iron 
C) copper 
D) boron 
E) chlorine 
A) manganese 
B) iron 
C) copper 
D) boron 
E) chlorine

Question 13

Plants that are efficient at taking iron up from a calcareous soil are known to employ which of the following methods?

Accepted Answer

A) lower pH of their rhizosphere 
B) produce reducing agents that reduce Fe3+ to Fe2+ in the rhizosphere. 
C) produce organic compounds that can form stable chelates with iron. 
D) all of the above 
E) none of the above 
A) lower pH of their rhizosphere 
B) produce reducing agents that reduce Fe3+ to Fe2+ in the rhizosphere. 
C) produce organic compounds that can form stable chelates with iron. 
D) all of the above 
E) none of the above

Question 14

Roots of monocotyledonous plant (e.g.grasses) have been shown to take in the entire organo-metallic complex when utilizing chelated sources of micronutrients such as iron.

Accepted Answer

A) True 
 B)False

Question 15

Molybdenum deficiency is most likely to occur under which of the following soil conditions?

Accepted Answer

A) soil with pH 6.3 and subject to frequent flooding 
B) well drained calcareous soil with pH 8.1 
C) well drained humid region loamy sand with pH 5.0 
D) muck soil (Saprist) with pH 5.5 
E) poorly drained calcareous soil with pH 7.6 
A) soil with pH 6.3 and subject to frequent flooding 
B) well drained calcareous soil with pH 8.1 
C) well drained humid region loamy sand with pH 5.0 
D) muck soil (Saprist) with pH 5.5 
E) poorly drained calcareous soil with pH 7.6

Question 16

Manganese toxicity is most likely to be a problem under which soil conditions?

Accepted Answer

A) clay loam Ultisol, pH 4.3, subject to frequent flooding 
B) well drained calcareous soil, pH 8.1 
C) well drained humid region loamy sand, pH 5.0 
D) muck soil (Saprist) with pH 5.5 
E) poorly drained calcareous soil with pH 7.6 
A) clay loam Ultisol, pH 4.3, subject to frequent flooding 
B) well drained calcareous soil, pH 8.1 
C) well drained humid region loamy sand, pH 5.0 
D) muck soil (Saprist) with pH 5.5 
E) poorly drained calcareous soil with pH 7.6

Question 17

Plant symptoms such as interveinal chlorosis on new leaves suggest a deficiency of which micronutrient?

Accepted Answer

A) Zn 
B) Fe 
C) Mn 
D) all of the above 
E) none of the above 
A) Zn 
B) Fe 
C) Mn 
D) all of the above 
E) none of the above

Question 18

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 19

Molybdenum toxicity is most likely to occur under which soil conditions?

Accepted Answer

A) soil with pH 4.3 and subject to frequent flooding 
B) well drained calcareous soil with pH 8.0 
C) excessively well drained humid region loamy sand with pH 5.0 
D) muck soil (Saprist) with pH 5.5 
E) poorly drained calcareous soil with pH 8.0 
A) soil with pH 4.3 and subject to frequent flooding 
B) well drained calcareous soil with pH 8.0 
C) excessively well drained humid region loamy sand with pH 5.0 
D) muck soil (Saprist) with pH 5.5 
E) poorly drained calcareous soil with pH 8.0

Question 20

Application of FeSO4 or ZnSO4 to many soils is much less effective than the addition of the same amount of micronutrient in the form of a chelate.

Accepted Answer

A) True 
 B)False

Copper deficiency is most likely to occur under which of the following soil conditions?

It is common for some plants growing on a particular soil to suffer from a micronutrient deficiency while other plants growing on the same soil are well supplied with the nutrient in question.

Which of the following nutrient elements is usually present in the soil solution as an undissociated acid?

The data in the following Table suggest the occurrence of a positive synergism between two nutrients.

The availability of which of the following micronutrients is commonly affected by soil redox potential?

Micronutrient deficiencies are more likely to occur where inorganic chemical fertilizers, rather than organic manures, have been used to stimulate vigorous plant growth.

Mycorrhizae help plants overcome deficiencies of zinc, copper, and other micronutrients by increasing the plant uptake of these elements from soil.

Histosols (organic soils) are typically well supplied with nitrogen and phosphorus but deficient in most micronutrients.

Which of the following micronutrients is least commonly found to be deficient in plants?

Plants generally convert oxidized iron to its reduced form by means of organic reducing agents before the iron is taken up or utilized by the plant.

Boron is commonly deficient in acid soils because chemical reactions under acid conditions make it less available for plant uptake .

Applying 10 kg/ha of which of the following nutrients would most likely cause toxicity to plants?

Plants that are efficient at taking iron up from a calcareous soil are known to employ which of the following methods?

Roots of monocotyledonous plant (e.g.grasses) have been shown to take in the entire organo-metallic complex when utilizing chelated sources of micronutrients such as iron.

Molybdenum deficiency is most likely to occur under which of the following soil conditions?

Manganese toxicity is most likely to be a problem under which soil conditions?

Plant symptoms such as interveinal chlorosis on new leaves suggest a deficiency of which micronutrient?

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

Molybdenum toxicity is most likely to occur under which soil conditions?

Application of FeSO₄ or ZnSO₄ to many soils is much less effective than the addition of the same amount of micronutrient in the form of a chelate.

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

Soil Colloids: Seat of Soil Chemical and Physical Activity

Soil Acidity

Soils of Dry Regions: Alkalinity, Salinity, and Sodicity

Organisms and Ecology of the Soil

Soil Organic Matter

Nitrogen and Sulfur Economy of Soils

Soil Phosphorus and Potassium

Practical Nutrient Management

Soil Erosion and Its Control

Soils and Chemical Pollution

Geographic Soils Information

Prospects for Global Soil Quality

Filters

Exam 15: Micronutrients and Other Trace Elements

Copper deficiency is most likely to occur under which of the following soil conditions?

It is common for some plants growing on a particular soil to suffer from a micronutrient deficiency while other plants growing on the same soil are well supplied with the nutrient in question.

Which of the following nutrient elements is usually present in the soil solution as an undissociated acid?

The data in the following Table suggest the occurrence of a positive synergism between two nutrients.

The availability of which of the following micronutrients is commonly affected by soil redox potential?

Micronutrient deficiencies are more likely to occur where inorganic chemical fertilizers, rather than organic manures, have been used to stimulate vigorous plant growth.

Mycorrhizae help plants overcome deficiencies of zinc, copper, and other micronutrients by increasing the plant uptake of these elements from soil.

Histosols (organic soils) are typically well supplied with nitrogen and phosphorus but deficient in most micronutrients.

Which of the following micronutrients is least commonly found to be deficient in plants?

Plants generally convert oxidized iron to its reduced form by means of organic reducing agents before the iron is taken up or utilized by the plant.

Boron is commonly deficient in acid soils because chemical reactions under acid conditions make it less available for plant uptake .

Applying 10 kg/ha of which of the following nutrients would most likely cause toxicity to plants?

Plants that are efficient at taking iron up from a calcareous soil are known to employ which of the following methods?

Roots of monocotyledonous plant (e.g.grasses) have been shown to take in the entire organo-metallic complex when utilizing chelated sources of micronutrients such as iron.

Molybdenum deficiency is most likely to occur under which of the following soil conditions?

Manganese toxicity is most likely to be a problem under which soil conditions?

Plant symptoms such as interveinal chlorosis on new leaves suggest a deficiency of which micronutrient?

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

Molybdenum toxicity is most likely to occur under which soil conditions?

Application of FeSO4 or ZnSO4 to many soils is much less effective than the addition of the same amount of micronutrient in the form of a chelate.

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

Soil Colloids: Seat of Soil Chemical and Physical Activity

Soil Acidity

Soils of Dry Regions: Alkalinity, Salinity, and Sodicity

Organisms and Ecology of the Soil

Soil Organic Matter

Nitrogen and Sulfur Economy of Soils

Soil Phosphorus and Potassium

Practical Nutrient Management

Soil Erosion and Its Control

Soils and Chemical Pollution

Geographic Soils Information

Prospects for Global Soil Quality

Filters

Application of FeSO₄ or ZnSO₄ to many soils is much less effective than the addition of the same amount of micronutrient in the form of a chelate.