Chapter 17 Flashcards
A bushel of corn or soybean weighs 60 pounds (27 kilograms).
False
Seeds at physiological maturity are dry enough for storage.
False
Generally, when soybeans are harvested, the leaves have fallen off the plants.
False
After combing, grain is clean of residue.
True
Above-optimum moisture levels in seeds increase the rate of respiration.
True
Grain storage always improves grain quality.
False
The decision to dry grain crops artificially versus naturally can be dependent on energy prices.
True
Harvest forages generally contain mature seed.
False
Silage yields are usually up to 50 percent higher per acre than hay yields.
True
High cell wall content is associated with increased intake and digestibility.
False
Many modern beef and dairy operations rely more on stored grains than on grazing to feed livestock.
True
The process of fermentation during silage production turns lactic acid into glucose.
False
Cotton is mature when the bolls begin to close.
False
Sugar content is the most important quality for sugar beets.
True
Potato size is the main determinant in harvesting.
True
Corn is typically harvested at grain moisture levels of:
A. 13 percent
B. 20 percent
C. 25 percent
D. 33 percent
C. 25 percent
Soybean is typically harvested at grain moisture levels of:
A. 13 percent
B. 20 percent
C. 25 percent
D. 33 percent
A. 13 percent
Swathing would most likely be part of harvesting for which crop?
A. corn
B. oats
c. soybean
D. sugar beet
B. oats
Manual harvesting of grains was first replaced by which machine?
A. combine
B. reaper
C. binder
D. cradle
B. reaper
The minimum temperature for storage fungi growth is:
A. 20 degrees F
B. 30 degrees F
C. 40 degrees F
D. 50 degrees F
C. 40 degrees F
The most frequent cause of loss during grain storage is:
A. insects
B. fungi
C. rodents
D. bacteria
B. fungi
The loss of forage nutrients during harvest frequently can be up to:
A. 5 percent
B. 25 percent
C. 40 percent
D. 60 percent
B. 25 percent
Forage feeding value is described as”
A. forage quality
B. intake
C. nutritive value
D. antiquality factors
A. forage quality
Thorns would be categorized as which of the following?
A. forage quality
B. intake
C. nutritive value
D. antiquality factors
D. antiquality factors
As the crop matures from vegetative to flowering stages, which of the following occurs?
A. Forage yield decreases and forage quality decreases
B. Forage yield decreases and forage quality increases
C. Forage yield increases and forage quality increases
D. Forage yield increases and forage quality decreases
D. Forage yield increases and forage quality decreases
The stocking rate is:
A. number of paddocks in a pasture
B. amount of hay in a bale
C. amount of silage in a silo
D. animals on pasture per acre
D. animals on pasture per acre
The leading hay crop in the United States is:
A. smooth bromegrass
B. red clover
C. alfalfa
D. timothy
C. alfalfa
Drying hay in the field takes about how many days?
A. 1 to 5
B. 6 to 10
C. 11 to 15
D. over 15
A. 1 to 5
What is the most important determinant of quality in a tobacco crop?
A. leaf color
B. nicotine content
C. grain yield
D. moisture content
B. nicotine content
