A. is an effect of one species on another through chemicals
B. can be used to suppress the germination and growth of weeds
C. the process by which many winter planted crops are converted to reproductive growth
D. all of the above
E. both a and b - C. the process by which many winter planted cro...
AGN 115 Exam 4 | 100% Correct Answers |
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Vernalization is
A. is an effect of one species on another through chemicals
B. can be used to suppress the germination and growth of weeds
C. the process by which many winter planted crops are converted to reproductive growth
D. all of the above
E. both a and b - ✔✔C. the process by which many winter planted crops are converted to reproductive
growth
In terms of agro-ecosystem diversity, an example of undesirable "simplification" of the system would be
the loss of predatory insects through indiscriminate use of a broad-spectrum insecticide. (Ch. 17)
True or False? - ✔✔True
Alleycropping, silvopasture, buffers, windbreaks, and forest farming are all examples of agroforestry
production systems.
True or False? - ✔✔True
Dung beetles are valuable for incorporating cattle waste back into the soil. Which of the following
considerations should be taken when applying pesticides for cattle parasites and flies to minimize
damage to dung beetle populations? (Grazing systems lecture)
A. select a compound known to do less damage to the "off-target" dung beetles, such as Moxidectin
instead of Ivermectim
B. Time the application of the pesticide so it does not coincide with dung beetle reproduction
C. consider the average stock density of cattle in the field where the pesticide is being applied
,D. all of the above are important considerations
E. both A and B are important considerations
F. both B and C are important considerations - ✔✔E. both A and B are important considerations
Generally speaking, the Hessian "Fly Free" date for SW Missouri is around October 14. (Pest
management Lec.)
True or False - ✔✔True
Select all FALSE statements about roller-crimping a cover crop.
Roller-crimping is most effective early in the morning.
Roller-crimping success requires waiting one week between rolling and planting for cover crop death.
Roller-crimping can potentially create residue cover of 85% or more for the growing season.
Roller-crimping works by breaking the cover crop stems in multiple places, eliminating the need to use
an herbicide to kill the cover crop. - ✔✔Roller-crimping success requires waiting one week between
rolling and planting for cover crop death.
Living mulch is _______. (Overview of Cover Crops and Green Manures, Preston Sullivan).
A. a cover crop established after harvesting the main crop and is used primarily to reduce nutrient
leaching from the soil profile.
B. a winter cover crop planted in late summer or fall to provide soil cover during the winter.
C. a cover crop planted alongside the main crop to attract pest insects away from the main crop in order
to reduce the need for pesticide application.
D. a cover crop that is interplanted with an annual or perennial cash crop - ✔✔D. a cover crop that is
interplanted with an annual or perennial cash crop
According to the assigned reading on pasture management, a surfactant is the process of using a boom
type sprayer, boom-buster nozzle, airplane, or helicopter to treat larger weed infestations with a solution
of herbicide and water.
, True or false - ✔✔False
A cover crop is
the use of plastic to cover winter vegetable crops to reduce runoff and increase soil temperature
any crop grown to provide soil cover. It can be incorporated as a "green manure".
trees planted across hillsides to reduce over land flow of runoff
always incorporated into the soil - ✔✔any crop grown to provide soil cover. It can be incorporated as a
"green manure".
The common type of tall fescue grass grown in Missouri has a fungal endophyte symbiont. The toxin
produced by the fungus can cause _______ disorders. [Select all correct answers.]
"fescue foot"
vernalization
"summer slump"
mycorrhizal associations
reproductive and milk production - ✔✔"fescue foot"
"summer slump"
reproductive and milk production
One benefit of high density grazing is that it requires less attention and time on the part of the livestock
manager.
True or False - ✔✔True
Examples of animal integration with crop systems include ______. (Ch 19)
A. Agroforestry and livestock
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