Name: 
 

2010 Ohio State Agronomy Test



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1 

Which of the following is considered surface water?
a
aquifer
c
road ditch
b
underground spring
d
well
 

 2 

When referring to Restricted Use Pesticides, which of the following statements is true?
a
Only certified applicators may purchase them, but anyone can apply them
b
Anyone can purchase them, but the applicator must be licensed.
c
Only certified applicators may purchase or apply them
d
None of the above
 

 3 

Which of the following formulations tends to clog spray equipment more than the others?
a
EC
b
F
c
RTU
d
WP
 

 4 

What is LD50?
a
A liquid herbicide with 50% active ingredient
b
A flowable with 50% active ingredient
c
Lethal dose to 50% of a test population
d
50% spreader sticker content
 

 5 

Which of the following best matches a caution signal word on a label?
a
May be harmful if swallowed.
b
May be harmful or fatal if swallowed
c
Causes permanent eye damage.
d
Fatal if swallowed.
 

 6 

Which of these is an example of a trade name?
a
Balance 3 MEC
c
primosulfuron
b
Glyphosate
d
isoxaflutole
 

 7 

A pesticide that can be absorbed and circulated in the plant is called
a
persistent
b
systemic
c
residue
d
volatile
 

 8 

An organism that causes disease in other organisms is called a
a
predator
b
carcinogen
c
pathogen
d
inert pest
 

 9 

A spill kit should consist of:
a
sturdy gloves, footwear and apron
c
emergency phone numbers
b
an ABC fire extinguisher
d
All of these are correct
 

 10 

What are nematodes?
a
parasitic round worms
c
specialized bacteria
b
plant pathogenic fungi
d
microplasms
 

 11 

Jeff Stachler owns a vegetable farm. The soil tests show he needs to apply 155 lbs. of nitrogen per acre to meet his yield goal for sweet corn. He has decided to apply urea which contains approximately 46% nitrogen to his half section (320 acres) which will be in a crop. If urea costs $.49 per pound, what will it cost him to fertilize the field? (round to two decimal points)
a
$52,834.78
c
$24,304
b
$75.95
d
$3,493.70
 

 12 

Which of the following is not a primary nutrient for plant growth?
a
Nitrogen
b
Phosphorus
c
Calcium
d
Potassium
 

 13 

Ergot, a disease of cereal grains, may have been responsible for the Salem Witch Trials. It forms black sclerotia that overwinter. This is caused by what agent?
a
bacteria
b
nematode
c
fungi
d
virus
 

 14 

Johnsongrass is a serious weed problem in crops such as corn and sugarcane because
a
It perreniates and spreads by rhizomes
b
It is resistant to most corn and sugarcane herbicides
c
It produces a lot of seed
d
all are correct
 

 15 

A friend wants to plant his 55 acre cucumber field with a population of 24,000 plants per acre. The recommended seeding rate for the selected variety is 7 pounds per acre. The germination rate is 98%. How many pounds of seed does he need to plant to cover the field?
a
393
b
385
c
55
d
24000
 

 16 

If the recommended seeding rate for oats is 13 to 21 seeds per foot within a 7 inch row, what would happen if the rate was increased to 58 seeds per foot within a 7 inch row?
a
Nothing would happen
c
Disease and lodging would increase
b
Increased yield and better straw
d
An increase in tiller numbers
 

 17 

Depth of fertility soil sampling should;
a
Vary with the amount of fertilizer used
b
Be several feet
c
Reflect the depth of tillage and crop characteristics
d
Stay in the to two inches of soil
 

 18 

You are doing an application of Balance Pro prior to planting your corn crop. Your nozzles are 36 inches apart. Your speed is 5.0 MPH. You are applying 15 gallons of spray per acre. What is your nozzle output?
a
0.45 GPM
b
0.15 GPM
c
0.23 GPM
d
0.36 GPM
 

 19 

Which of the following species is a creeping perennial?
a
corn
c
Canada thistle
b
dandelion
d
pigweed
 

 20 

Which of the following is the best way to avoid herbicide resistance?
a
Rotate crops using Roundup-Ready technology.
b
plant the same crop and use the same herbicide at a higher rate.
c
plant the same crop and combine different herbicide families.
d
rotate crops using different herbicide families.
 

 21 

Your soybean yield potential is 60 bushels per acre. Your soil test result for phosphate is 45 ppm acres. How much 0-26-26 do you need to add to meet the recommendation?
a
50 pounds per acre
c
95 pounds per acre
b
45 pounds per acre
d
173 pounds per acre
 

 22 

Your soybean yield potential is 30 bushels per acre. Your soil test result for phosphate is 45 ppm per acre. How much 0-26-26 do you need to add to meet the recommendation?
a
none is needed
c
10 pounds per acre
b
30 pounds per acre
d
40 pounds per acre
 

 23 

When you apply 200 pounds per acre of 8-11-0 to your lawn, how much nitrogen are you applying?
a
200 pounds
c
16 pounds
b
160 pounds
d
72 pounds
 

 24 

You are planting grain sorghum into an old 23 acre orchardgrass hay field. Your yield goal is 75 cwt per acre and the orchardgrass should take 65 lbs of nitrogen to achieve this yield goal. How much 34-0-0 do you need to apply to meet the recommendation for the field?
a
65 pounds
c
4397 pounds
b
1495 pounds
d
3487 pounds
 

 25 

The reason for adding liquid fertilizer solution to pesticide applications is to:
a
Aid in the penetration and absorption of the pesticide
b
Optimize the pesticide’s ability
c
Aid in the translocation of the pesticide to the active site
d
All of these are correct
 



 
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