EXAM 2025/2026 WITH ACTUAL CORRECT
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If you count 10 plants in 5 sq ft of a field at several points in that field,, what is the approximate
plant population?
a. 45,000 plants per acre
b. 85000 plants per acre
c. 125000 plants per acre
d. 145000 plants per acre
b. 85000 plants per acre
Seeding rate is __ plant population.
a. always less than
b. always greater than
c. equal too
d. less than or equal too
b. always greater than
Advantages of starter fertilizer include _____.
a. less weed infestation
b. lower irrigation cost
c. less erosion
d. more vigorous stand
d. more vigorous stand
The crop growth stage where roots, stems and eaves develop is _________.
a. veg
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,b. flowing
c. germination
d. maturation
a. veg
Growing degree days are not useful in determining when to _____
a. top dress nitrogen
b. harvest
c. initiate tillage
d. apply pesticides
c. initiate tillage
If the bas temperature is 60 F, the daily temp is 80 F and the max is 95 F how many heat units
have accumulated?
a. 20
b. 60
c. 80
d. 0
a. 20
In many crops night length is important in triggering __________.
a. germination
b. flowering
c. photosynthesis
d. vernalization
b. flowering
The growing point of a grass is _.
a. leaf tip
b. root tip
c. flower
d. intercalary meristem
d. intercalary meristem
The optimum temperature for crop growth and development _____ with crop growth stage.
a. increase
b. decreases
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,c. changes
d. does not change
c. changes
Water needs of a crop typically increase during the season to maximum, followed by
____________.
a. a second increase at harvest
b. a level period until harvest
c. a decline to harvest
d. rainfall
c. a decline to harvest
Which of the following accelerates canopy closure ?
a. wide rows
b. narrow rows
c. upright plant growth
d. lower plant population
b. narrow rows
A plant that lives 10 years is a __________
perennial
Crop root growth can be affected by ____________.
a. diseases
b. insects
c. acid soils
d. all of the above
d. all of the above
Which root system concentrates nutrient uptake in surface soil?
a. membranous
b. filamentous
c. tab
d. fibrous
d. fibrous
A crop should be replanted when stand is lost due to some stress, when _______________.
a. it is economically justified
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, b. when the field looks bad
c. when your neighbor replants
d. when you have no crop insurance
a. it is economically justified
Which of the following may eliminate the possibility of replanting?
a. late first planting
b. good weather
c. good seed supply
d. seed fertility
a. late first planting
When diagnosing a crop production problem in the field, you should ____.
a. consider diseases then fertility problems
b. consider herbicide damage first
c. compare damaged areas with normal areas
d. wait until problem has existed
c. compare damaged areas with normal areas
Which of the following is probably not helpful in diagnosing a crop problem in the field?
a. cropping history
b. pesticide history
c. seeding depth
d. days of sunlight
d. days of sunlight
______ is used to locate a poistion in a field.
a. GIS
b. GPS
c. GUS
d. UPS
b. GPS
___ is used to apply fertilizers, pesticides and seeds at different rates across a field.
a. GPS
b. UPS
c. VRT
d. CRT
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