An article on buying good crop seed might come more normally in the winter months. But at this time of the year, you can take a look at your growing crops with a back glance at the kind of seed that produced them.
Everson, L. E.
"What Kind of Seed Did You Get?,"
Iowa Farm Science: Vol. 10
, Article 4.
Available at: https://lib.dr.iastate.edu/farmscience/vol10/iss1/4