Chapter 20 Flashcards
The first use of soybeans in North America was as a grain crop.
False
The largest producer of soybeans in the world is the United States
True
The seed of cultivated soybeans is always yellow in color.
False
Determinant soybean varieties are generally grown in the southern states.
False
Soybeans do not require nitrogen fertilizer.
True
Peanuts are best adapted to temperate regions.
False
Alfalfa can have taproots as deep as 20 feet (6 meters).
True
Seed production of alfalfa is primarily in California and other western states.
True
Sweet clover was once commonly used as a nitrogen source.
True
Vetches are commonly grown in tropical regions as green manure crops.
False
Benefits of using native legumes agronomically include natural adaptation and increasing diversity.
True
Most of the field pea production in the United States is used as dried peas for soup or for livestock feed.
True
Crimson clover is adapted to hot and dry conditions.
False
How many maturity groups do soybeans have?
A. 7
B. 11
C. 13
D. 15
C. 13
Which of the following would be classified as _____ bean?
A. kidney bean
B. green bean
C. snow pea
D. soybean
A. kidney bean
Field beans are native to:
A. Asia
B. Europe
C. Africa
D. the Americas
D. the Americas
Field beans need to be cooked because
A. they contain toxic compounds.
B. the oligosaccharides contribute to gas formation
C. the protein will be unavailable
D. they are too difficult to chew
C. the protein will be unavailable
Peanuts are native to:
A. Africa
B. Europe
C. North America
D. South America
D. South America
Which of the following is NOT generally used as a grain legume?
A. chickpea
B. alfalfa
C. lupine
D. lentils
B. alfalfa
Up to how many times can alfalfa be harvested in a season?
A. only once
B. twice
C. five times
D. seven times
C. five times
Which of the following is sown on more acres in the United States?
A. white clover
B. red clover
C. sweet clover
D. sainfoin
B. red clover
Which of the following has stolons?
A. white clover
B. red clover
C. sweet clover
D. alfalfa
A. white clover
For which of the following is birdsfoot trefoil most suited?
A. hay
B. silage
C. pasture
D. grain
C. pasture
Which of the following is best adapted to dry conditions?
A. white clover
B. red clover
C. alfalfa
D. sainfoin
D. sainfoin
How much of the peanut crop produced in the United States is consumed as peanut butter?
A. 20 percent
B. 30 percent
C. 40 percent
D. 50 percent
D. 50 percent
Which of the following is NOT a typical color type for field pea?
A. green
B. brown
C. yellow
D. cream
B. brown
