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Certified Crop Advisor- Soil and Water Management Exam. 81 Questions With 100% Correct Answers 2024. CA$16.54   Add to cart
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Certified Crop Advisor- Soil and Water Management Exam. 81 Questions With 100% Correct Answers 2024.
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  • Certified Crop Advisor- Soil And Water Management

Certified Crop Advisor- Soil and Water Management Exam. 81 Questions With 100% Correct Answers 2024.

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  • March 23, 2024
  • 7
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • certified crop advisor soil and water management

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  • Certified Crop Advisor- Soil and Water Management
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Certified Crop Advisor- Soil and Water
Management Exam. 81 Questions With 100%
Correct Answers 2024.
Which of the following is negatively charged?

anion

Cations are held on the CEC by _____ charges on clay and organic matter .

Positive

Which of the following clays contributes most to CEC if the same amount of each clay is present ?

montmorillonite

Potassium fixation occurs when which of the following clays is present in soil ?

Illite

If a soil has an EC of 0.6 siemens meter and contains 20 percent sodium on the CEC , it is a
_________soil .

saline - sodic

What is the textural class of soil that is 10 percent clay and 35 percent sand ?

Silt Loam

Which of the following increases as a soil's clay content increases ?

Surface Area

Which of the soil textures listed below has the highest porosity and lowest bulk density ?

Clay

The maximum value for plant available water is_____________.

The difference field capacity and wilting point

Which of the following textural classes has the largest potential available water ?

silt loam

Which kind of soil structure would be typical for a good seed bed ?

Granular

Soil structure modifies the physical properties of soil_____________.

Texture

, Good structure in the subsoil improves ________________.

root elongation

Soil microorganisms cause_________ in soil structure when crop residues are added to soil .

Increases

The bulk density of 100 cm³ of dry soil that weighs 145 g is_______ g / cm³ .

1.45

Which of the following soil textures has the greatest % porosity ?

clay

Which of the following can decrease bulk density ?

incorporating compost

In a typical row crop production system , most of the soil organic matter originates from_________.

crop residues

The stable form of soil organic matter is called______________.

humus

When organic materials decompose , most of the C ends up as ________________.

CO₂

Which of the following is not an example of a contribution of soil organic matter to soil properties ?

increased molybdenum availability

Soil organic matter is a source of ___________for crops .

nitrogen potassium

In order to increase soil organic matter levels , _____________must be markedly reduced or
eliminated .

weed control

Which of the following is most important in carbon sequestration ?

Reducing tillage

Which of the following favors increased soil microbial activity ?

increase in soil water content from 20 to 40 percent of water holding capacity

Which of the following organic materials would be expected to mineralize the most nitrogen

dairy manure

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