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WorksheetsCitrus - Written Exam (2015)
Total questions: 25
Worksheet time: 13mins
Which of the following statements best describes Florida's climate?
Florida has an arid subtropical climate
Florida has a dry tropical climate
Florida has a humid subtropical climate
Florida has a wet tropical climate
Optimum growth of citrus in Florida occurs at:
55-100 degrees Fahrenheit
80-90 degrees Fahrenheit
35-50 degrees Fahrenheit
over 100 degrees Fahrenheit
Which of the following varieties of citrus is most cold hardy?
Calamondin
Grapefruit
Sweet Orange
Trifoliate Orange
A budded citrus tree in Florida usually contains:
A scion
A rootstock
Both a scion and a rootstock
Neither a scion nor a rootstock
Regreening is most likely to occur on Valencia oranges grown in Florida after:
February
March
April
May
To be classified as a "seedless" orange, the fruit must contain:
0 seeds
less than 6 seeds
less than 60 seeds
less than 100 seeds
The principal early season sweet orange grown in Florida is the:
Hamlin
Pineapple
Valencia
March Seedless
Temples and Murcotts are examples of:
Tangors
Tangelos
Mandarins
Sweet Oranges
Which of the the following rootstocks has been most widely used since 2003?
Swingle
Carrizo
Cleopatra
Smooth Flat Seville
Since the implementation of the Citrus Nursery Stock Certification Program (Florida Rule 5B-62), young citrus trees are now required to be grown in:
Texas and Arizona
Sandy soil field conditions located near commercial groves
California and New Mexico
Approved greenhouses located at least one mile from commercial citrus groves
Which of the following has been used to switch Ambersweet scions to other scions?
Air layering
Inarching
Marcottage
Topworking
If it doesn't rain within a week, young, non-bearing trees need about ______ gallons of water per week.
5
10
25
100
The third number on a bag of fertilizer refers to:
The percentage of nitrogen
The percentage of potassium
The percentage of calcium
The percentage of magnesium
The term "scouting" refers to:
Inspecting the grove for pests and diseases
Checking the grove for mature fruit
Checking the grove for wildlife habitat
Inspecting the spray equipment for leaks
Which of the following is the vector of the citrus greening disease (HLB)?
Grasshoppers
Citrus Leafminers
Asian Citrus Psyllids
Fuller Rose Beetle
Trees that have several different cultivators budded onto one rootstock are referred to as:
Multipurpose trees
Cocktail trees
Hybrid trees
Genetically Modified trees
Citranges and citrumelos are examples of:
Intercultivar hybrids
Interspecific hybrids
Intergeneric hybrids
Complex hybrids
In sandy soils the most favorable soil pH for growing citrus is:
Acid (3.4 to 4.5)
Slightly acid (5.5 to 6.5)
Slightly alkaline (7.5 to 8.5)
Alkaline (9.5 to 10.5)
When does freeze damage begin to occur?
When the air temperature falls below 20 degrees Fahrenheit
When the air temperature falls below 28 degrees Fahrenheit
When the air temperature falls below 33 degrees Fahrenheit
When the air temperature falls below 60 degrees Fahrenheit
The term "temperature inversion" means that:
The air forms layers which become progressively warmer from the ground up
The air forms in layers which become progressively cooler from the ground up
The air is the same temperature at the ground as it is in the clouds
It is colder in the daytime than it is at night
The average rainfall in the citrus growing region of Florida is approximately
32 inches per year
52 inches per year
72 inches per year
102 inches per year
Which of the following is most likely a hybrid?
Pineapple Orange
Meyer Lemon
Eureka Lemon
Key Lime
To achieve maximum cold hardiness, satsumas should be budded onto:
Trifoliate Orange rootstock
Swingle Citrumelo rootstock
Sour Orange rootstock
Rough Lemon rootstock
The disease called "scab" is caused by:
An insect
A fungus
A virus
A mite
Rust Mite populations are generally highest during:
spring
summer
fall
winter
