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Fertilizers and Soil Amendments Flashcards | StudBud
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Fertilizers and Soil Amendments
Fertilizers and Soil Amendments
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1
Which of the following is NOT a correct statement for plant tissue sampling procedures?
Taking any plant part for sampling is acceptable
The samples should be taken between mid-morning and mid-afternoon
Rainy weather should be avoided when taking samples
Plant tissue samples should be free of soil particles
2
Which of the following terms refers to the size of soil particles?
Soil texture
Soil composition
Soil structure
Soil pH
3
Which of the following is NOT true about plant tissue analysis?
It can identify an appropriate time for harvest
It will identify diseases present in the plant
It can diagnose existing nutrient problems in plants
It can be used to fine-tune fertilization strategies
4
Which of the following is NOT true about soil sampling?
It helps prevent over-usage of fertilizers
It can determine the most current fertility status of a soil
It can indicate the amount of available nutrients in soil
It is expensive and not an accurate indicator of soil pH
5
Which of the following is a true statement about fertilizers?
Inorganic fertilizers supply some nutrients but do affect soil properties.
Applying heavy amounts of fertilizer is always good for plants
The nutrient content of inorganic fertilizers is not well known.
Fertilizers guarantee minimum % of nutrients & don't affect soil properties
6
Which of the following is NOT a secondary macronutrient?
Copper
Magnesium
Calcium
Sulfur
7
Which of the following best describes a loam soil?
Soil particles which vary in size and resemble cookie crumbs
Soil particles which are smooth and small in size
Soil which contains high organic matter content
Soil which contains relatively equivalent portions of sand, silt and clay
8
Which of the following is a NOT a true statement about fertilizers?
Urea is a synthesized inorganic substance.
When organic or inorganic fertilizers are applied properly, they are safe
Inorganic fertilizers are known as commercial or synthetic fertilizers.
Organic fertilizers have increased crop yields during the last 100 years
9
Which of the following is another name for micronutrients?
Small nutrients
Non-mineral nutrients
Major nutrients
Trace elements
10
Which of the following is NOT a characteristic of organic matter?
Organic matter improves both water and nutrient-holding capacity.
Organic matter rids soil of organisms which aids in soil fertility.
Organic matter improves water infiltration.
Organic matter improves soil aeration.
11
Which of the following is NOT an advantage of inorganic fertilizers?
They are beneficial in adding organic matter to the soil
Exact amounts of nutrients are given on the fertilizer bag
Mass production of inorganic fertilizers made the industry cost efficient
They are quickly available to plants for nutrient uptake
12
How are plants supplied with non-mineral nutrients?
Fertilizers and soil amendments
Fertilizers
Water and air
Soil amendments
13
All but which of the following is a non-mineral nutrient?
Carbon
Hydrogen
Oxygen
Argon
14
Which of the following is NOT a primary nutrient?
Potassium
Nitrogen
Calcium
Phosphorus
15
Which of the following is a true statement?
Using a soil test & plant tissue analysis together will have best results
Plant tissue analysis is the best assessment of nutrient levels in soil.
Soil tests are most useful during the growing season to predict needs.
Soil tests are useful during the growing season to monitor nutrient uptake.
16
Which of the following is a true statement about soil?
Soil must contain water, nutrients and organisms to produce plant growth.
Ideal soil contains large amounts of silt w/ equal portions of clay & sand.
When nutrients leach out of the soil, it prevents toxicity in plants.
Soil structure and pH determine nutrient availability to plants.
17
Which of the following amendments is NOT high in salt content?
Manure
Sphagnum peat
Composted biosolids
Wood ash
18
Which of the following is NOT a true statement about lime?
It gives large amounts of calcium & magnesium when applied to acidic soils
It is commonly thought of as a fertilizer but is primarily a soil amendment
It is an organic amendment
It is an inorganic amendment
19
Which of the following is NOT an advantage of organic fertilizers?
They can increase water-holding capacity
They can increase soil drainage
They quickly release nutrients for plant uptake
They can decrease the runoff of nutrients into local water systems
20
Which of the following is NOT a plant tissue sample which can be collected for analysis?
The top of the plant
The most recently matured leaf
The outermost undamaged leaf
The newest leaf on the plant
21
Which of the following is NOT true about primary nutrients?
They consist of nitrogen, phosphorus and potassium
They are a group of macronutrients
They are usually supplied by fertilizer application
They are needed in small quantities
22
Fertile soil should contain all BUT which of the following?
Proper pH balance
Tightly compacted soil structure
Sufficient nutrients and minerals
Microbial communities
23
Which of the following is NOT a type of soil aggregate?
Crumby
Platy
Granular
Blocky
24
Which of the following is NOT true about soil pH?
Soil pH does not affect the availability of nutrients
When soil pH is high, micronutrients tend to be less available
Acidic soil has a pH less than seven
It is a measure of the alkalinity or acidity of soil
25
Which of the following is NOT a common problem associated with inorganic fertilizers?
They can cause toxic residues to appear in fruits & vegetables
They can dry out, or desiccate, seedlings and young plants
They are often subject to leaching
They may release insufficient nutrients & can deplete nitrogen in the soil
26
Which type of nutrients is needed in large amounts by plants?
Secondary nutrients
Non-mineral nutrients
Macronutrients
Micronutrients
27
Which of the following is NOT effective as a soil amendment and a fertilizer?
Compost
Peat
Biosolids-based products
Manure
28
Which of the following is NOT a factor to consider when selecting soil amendments?
Soil texture
pH of the amendment
Soil structure
Soil salinity
29
What is the optimum pH range for most plants?
5.5 - 6.5
5.0 - 6.5
6.5 - 7.5
6.0 - 7.5
30
Which of the following is NOT a true statement about fertilizers?
Organic fertilizers are growing due to their reduced effect on environment.
Organic fertilizers are more apt to leach nutrients than inorganic.
Improper application of fertilizers can have negative effects on plants
Inorganic fertilizers are an inexpensive way to supplement plant nutrients.
31
Which of the following is a true statement about soil amendments?
Amending a soil is the same thing as mulching.
Soil amendments should be buried within the soil to be most effective.
Soil amendments supply a guaranteed percentage of nutrients.
Soil amendments are used to improve chemical & physical properties of soil.
32
Which of the following is a true statement about organic fertilizer?
Organic fertilizer is produced artificially
Organic fertilizer is not certified by the USDA
Organic fertilizer is also known as a commercial fertilizer
Organic fertilizer is composed of materials found in nature
33
Which of the following best describes leaching?
Nutrients accumulate in water then are supplied to plants through the soil.
Water carries nutrients below roots where they are unavailable to plants.
Nutrients come from groundwater & streams and appear in soil for plant use.
Water brings nutrients from below roots so they are available to plants.
34
Which of the following best describes soil fertility?
The amount of nutrients available in a soil
An inexpensive way to maintain plant health and maximize crop productivity
The quality or ability of a soil to provide nutrients to plants
A measure of soil quality which stays constant throughout a growing season
35
When is the best time to test soil?
Right after fertilizer application
In the winter or during growing season
After harvest and before fall fertilization, or before spring fertilization
When soil is very wet
