Question 1

Why do desert soils have significantly less than 5% organic matter?

Accepted Answer

Not enough rain

Answer

It Don't Matter

Answer

Soil is to thick

Answer

Caliche

Question 2

Which type of soil has the largest particle size?

Accepted Answer

Sand

Answer

Silt

Answer

Loam

Answer

Clay

Question 3

Which of the following are types of soil texturing method?

Accepted Answer

Ribbon & Jar

Answer

Sifting & Lifting

Answer

Ribbon & Sifting

Answer

Jar & Sifting

Question 4

Why can you not practically alter soil texture?

Accepted Answer

Not financially feasible

Answer

Very practical on a large scale

Answer

Takes to long

Answer

Easy to incorporate organic matter

Question 5

Which of the following is NOT a type of salt that accumulates in soil?

Accepted Answer

Nitrogen (N)

Answer

Potassium (K)

Answer

Sodium (Na)

Answer

Calcium (Ca)

Question 6

How does soil become saline?

Accepted Answer

Application of fertilizers

Answer

Leaching Requirement

Answer

Good irrigation water

Answer

Deep Watering

Question 7

Which is NOT a way to knock off Sodium (Na+)?

Accepted Answer

Adding Fertilizer

Answer

Leaching Requirement

Answer

Deep Watering

Answer

Adding Gypsum

Question 8

Which of the following is NOT an issue with caliche?

Accepted Answer

Low pH can cause nutrient  deficiencies in plants

Answer

Reduces water movement through soil profile

Answer

Leads to salt accumulation and reduced aeration in soil

Answer

Restricts root growth to upper levels of soil

Question 9

How do you know if you need to apply gypsum to soil?

Accepted Answer

All answers listed

Answer

Soil cracks when dry

Answer

Rainwater soaks in more slowly than irrigation water

Answer

Soil won’t absorb water

Question 10

If you have a soil jar test and determine that the sample is 40% Sand, 25% Silt and 35% Clay what is the type of soil?

Accepted Answer

Clay loam

Answer

Sandy clay loam

Answer

Silt loam

Answer

Silty clay

Question 11

Which of the following is a symptom of Nitrogen (N) deficiency?

Accepted Answer

Yellowing of older leaves, bottom of plant

Answer

Uncontrolled growth

Answer

Foliage may drop early in spring

Answer

Older leaves turning a dark green or reddish purple

Question 12

Which of the following is a symptom of  Iron (Fe) deficiency?

Accepted Answer

Interveinal chlorosis (yellowing leaf with green veins)

Answer

Leaves may have necrotic spots

Answer

Found on older growth

Answer

Burnt leaf tips

Question 13

Which of the following is a complete fertilizer?

Accepted Answer

21-7-14

Answer

21-0-0

Answer

0-20-0

Answer

36-0-0

Question 14

What does N-P-K stand for?

Accepted Answer

Nitrogen, Phosphorus & Potassium

Answer

Nitrogen, Plutonium & Platinum

Answer

Nitrogen, Potassium & Phosphorus

Answer

Neon, Palladium & Phylum

Question 15

Which of the following is a disadvantage of Organic fertilizer?

Accepted Answer

Pathogens & weeds

Answer

Lightweight

Answer

Labor intensive to make

Answer

Requires less fertilizer application

Question 16

Which of the following is a disadvantage of Inorganic (chemical) fertilizer?

Accepted Answer

Can be energy-intensive to make

Answer

Lighter weight

Answer

Less material required

Answer

May provide more predictable results

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