WorksheetsAgronomy Test
Total questions: 35
Worksheet time: 18mins
Which of the following essential nutrients is considered a secondary nutrient?
a. phosphorus
b. calcium
c. potassium
d. manganese
e.zinc
From the following list, which oral LD50 value represents the most toxic poison?
a.300 mg/kg
b.480 mg/kg
c.5000 mg/kg
d.101 mg/kg
If you wanted to increase the CEC (cation exchange capacity) of your soil, which of the
following additives would you
add to your soil?
a.apply ammonium sulfate to the soil at least once a year
b.rotate your crops annually
c.add organic matter (compost, manure, green manure crops, etc.) to your soil
d.moldboard plow your soil to incorporate crop residues
If a plant continues to produce more leaves and stems after it has begun to flower, that growth habit is called which of the following:
a.dioecious
b.epinasty
c.determinate
d.monoecious
e.indeterminate
If you were using a chlorophyll meter to determinethe nutrient status of a corn crop, which nutrient below is most likely to be correlated with the level of chlorophyll?
N
P
K
Fe
S
If a 10-25-10 fertilizer costs $450/U.S.ton (2,000 lbs in aU.S. ton), how much did you pay per pound of all the nutrients present (round to the nearest penny)?
a.$0.27/lb
b.$0.50/lb
c.$0.89/lb
d.$1.01/lb
A farmer has all-inclusive production costs for his crop of $884per acre. The farmer sold the crop ahead of harvest season using a future’s contract for $5.20 per bushel so how many bushels per acre does the farmer need to achieve to cover just the production costs?
a.170 bushels per acre
b.180 bushels per acre
c.200 bushels per acre
d.225 bushels per acre
Which of the following is a plant available form of nitrogen?
a.N2
b.NH3
c.NO3
d.NO2
e.NO
A raceme is considered a type of what?
a.tiller
b.inflorescence
c.root structure
d.leaf structure
Which of the following plants are considered examples of pulses?
a.barley, rye, rice
b.white clover, alfalfa, crimson clover
c.canola, flax, corn
d.peas, lentils, dried beans
What is the primary role of phosphorus in plant growth?
a.enzymatic activation
b.carbohydrate metabolism
c.energy transfer and storage
d.stomata(water) regulation
The hilium of a bean seed is what?
a.the thin shell covering of the seed
b.where the radicle first emerges from a germination seed
c.where the seed is attached to the pod
d.where the first leaves form
A mixture of proteins that gives bread its elastic texture is called what?
a.gluten
b.glucosinates
c.amino acids
d.omega 3’s
Corn is an example of what type of plant?
a.dicot
b.monoecious plant
c.dioecious plant
d.legume
e.gynoecious
The plant structure that develops because of a fertilized flower on the peanut plant is called a what?
a.stolon
b.rhizome
c.corm
d.boll
e.peg
In a corn crop, stage R2 refers to what?
a.denting
b.50% milk line
c.tasseling
d.blister
How many acres are in one section?
a.160 acres
b.640 acres
c.333 acres
d.400 acres
Purple seed stain is a common disease found in which of the following crops?
a.corn
b.cotton
c.canola
d.soybeans
e.barley
In cool moist springs, the ergot fungus can infect the floret of certain grasses and develops a fruiting body,a hard dry sclerotium inside the husk of the floret. This blackish sclerotiamimics to some degree the grain produced by the grass crop. The most common grain infected and one that can impact bread makingis which of the following?
a.Wild rice
b.Oats
c.Rye
d.Corn
Why is it important to spray preemergence herbicides before a rain or scheduled irrigation?
a.to decrease the chances of chemical runoff
b.to increase the rate of chemical breakdown
c.to decrease the rate of microbial activity
d.to move the herbicide into the weed germination zone
A definition of an annual plant is which of the following?
a.a plant that grows one year then flowers and reproduces the next
b.a plant that reproduces only by vegetative parts
c.a plant that grows, flowers and reproduces in one growing season
d.a plant that lives more or less indefinitely, keeps coming back each year
The fixation of nitrogen from the atmosphere occurs in which group of plants?
a.cereal grains such as wheat barley, oats
b.legumes such as clovers, peas, alfalfa, beans
c.vegetable crops such as carrots, squash, watermelon
d.oilseed crops such as canola
The release of a substance by one plant that is toxic to another plant is known by what term?
a.alleopathy
b.symbiosis
c.abiotic
d.autotrophic
You buy a 50-lb bag of fertilizer with a grade of 14-5-10. With respect to pounds of nutrientsas represented by the bag’s label, what did you buy?
7 lbs of nitrogen (N), 2.5 lbs of P, and 10 lbs of K2O
14 lbs of N, 5 lbs of P2O5, and 10 lbs of K2O
7 lbs of N, 2.5 lbs of P, and 4.15 lbs of K2O
7 lbs of N, 2.5 lbs of P2O5, and 5 lbs of K2O
Which soil structure would be typical for a good seed bed?
a.massive
b.platy
c.granular
d.blocky
Which of the following have chewing mouth parts?
a.aphids
b.earwigs
c.adult moths
d.leafhoppers
Of the following practices, which one is important to follow to insure the safety of pollinating bees?
a.avoid unnecessary insecticide use
b.use low hazard insecticide formulations
c.time spray application when bees are inactive.
d.all of the above
Carrots raised for seed are examples of what type of plant?
a.annuals
b.perennials
c.biennials
d.spring annuals
Lodging in grains tends to happen because a grower has applied an excess of which nutrient when growing conditions are good?
a.sulfur
b.potassium
c.phosphorous
d.nitrogen
Vernalization is a process some plants require to flower and produce seed. An example of a crop that needs vernalization is which of the following?
a.winter wheat
b.sweet corn
c.dent corn
d.cotton
Ginned cotton is cotton that has undergone what?-
a.had the seed removed
b.boll opening
c.flowering
d.has had a defoliate applied
Seeding emergence is hindered by which of the following?
a.plow pans
b.deep clay layers
c.surface crusting
d.warm, wet weather
Some weeds show herbicide resistance because:
a.weeds are finding ways to reproduce in different methods
b.the same herbicide has been used year after year
c.more organic farming is taking place
d.their seeds live in the soil for many years
How are loess soils deposited?
a.wind
b.glaciers
c.water
d.equipment
Chlorosis can be defined as what?
a.failure of flowers to produce pollen
b.failure of roots to absorb water
c.shrinking or narrowing of the xylem
d.pale, yellow or bleached leaves
