The first of these field tests occurred near Richmond in 1844.
It investigates the diseases of plants and carries on field tests in the prevention of diseases.
In field tests on the control of black spot of roses juglone stood up well.
Field tests, at experiment stations and on farms, are our best sources of knowledge.
At last it was realized that the field tests were no longer fair, and McCormick gave them up.
Sometimes these field tests were the most exciting and spectacular events at country fairs.
And he still wears the Scotch cap and long boots that have been familiar at field tests for more than half a century.