Crop Production Ch 13
false
A 2-year rotation is generally adequate to control pests.
oats
A common companion crop to alfalfa is:
peanut
A common crop grown in rotation with cotton is:
corn-soybean
A common example of a 2-year rotation in the Midwest is:
wheat planted in fall with corn planted in spring
An example of a double crop system that would be grown in a state such as Illinois is:
false
By cropping corn continuously, producers can expect 10 percent yield gains over corn in rotation.
false
Continuous cropping is the planned sequence of different crops grown over years on the same land.
true
Corn and soybean are crops that tend to be grown in monocultures.
all answers are correct; herbicides, mowing, rolling
Cover crops are killed using which method?
false
Farmers who have CRP plantings receive a one-time payment for enrollment.
true
Green manures can be used as a substitute for synthetic fertilizers.
polyculture
Growing two or more crops together in the same place during a growing season is called:
true
Hay mixtures using species such as alfalfa and grasses are an example of mixed intercropping.
true
Increased biodiversity is generally desirable in an agroecosystem
true
Living mulches have only been used to a limited extent due to management challenges.
false
Multiple cropping is often practiced in areas with short growing seasons.
true
One way to diversify the landscape is through conservation plantings.
false
Polyculture systems are easier to manage than monoculture systems.
false
Studies have not shown a positive environmental impact as a result of the CRP program.
alley cropping
The agroforestry system where trees are grown in rows with an annual or perennial crop between is called:
false
The nitrogen from legumes can provide enough nutrition for a subsequent corn crop.
living mulch
The polyculture system where annual grain crops are planted into a suppressed perennial sod is:
cover cropping
The type of multiple cropping system where a crop is planted (but not for harvesting) during or following the cash crop is:
95 percent
What percentage of the Corn Belt is planted with corn and soybean?
False
When biodiversity is considered, the concept of richness refers to the distribution or relative abundance of the individuals of a species.
silvopasture
Which is a type of agroforestry system that combines trees with pastures for livestock utilization?
rye
Which of the following crops is known to have allelopathic effects?
shelter belts
are rows of trees at the end of fields that slow wind velocity and protect crops and buildings from wind erosion and wind damage
Riparian Buffers
are swaths of trees, shrubs, or grasses planted along the banks of streams, rivers, wetlands, or lakes
continuous
cropping is when the same crop is gown for 2 or more years on the same land
green manure
crops grown to be plowed under to improve soil quality are ___ crops
allelopathic
plants that contain compounds that inhibit the growth of other plants are
biodiversity
refers to all the species of living organism in an agroecosytem
Contour strip cropping
the form of strip cropping commonly used for conserving soil on sloping erodible land is
yield stability
the insurance that a polyculture can provide against total crop failure is called
strip cropping
the ploycultrue system where crops are gown in monoculture in adjacent rows is called
rotation effects
the process that causes beneficial consequences on yield for unknown reasons is called
multiple cropping
the sequential production of two or more different crops from the same piece of land
monoculture
the system that involves growing a single crop within a field during the growing seasons is a
richness and evenness
the two components of biodiversity are
mixed intercropping
the type of polyculture can provide against total crop failure is called
