Question

Which of the following is not true concerning cover crops?
a.
they prevent soil erosion
b.
they can fix nitrogen in soil
c.
they are sold as cash crops
d.
they add organic matter to soil

Answer 1

c. They are sold as cash crops

Cover crops are grown primarily to protect and improve the soil (reduce erosion, add organic matter, suppress weeds, and some—like legumes—fix nitrogen). They are not typically grown primarily as cash crops, though in some systems they may provide secondary products (forage, seed).