To be sure, Tull denied that different plants require different sorts of food and, notes Washington, "gives many unanswerable Reasons to prove it," but he combats the notion that the soil ever causes wheat to degenerate into rye.

This he declares "as ridiculous as it would be to say that an horse by feeding in a certain pasture will degenerate into a Bull." And yet it is not difficult to discover farmers to-day who will stubbornly argue that "wheat makes cheat." Tull also advocated the idea that manure should be put on green and plowed under in order to obtain anything like its full benefit, as well as many other sound ideas that are still disregarded by many American farmers.
Washington eagerly studied the works that have been mentioned, and much of his time when at Mount Vernon was devoted to experiments designed to ascertain to what extent the principles that were sound in England could be successfully applied in an American environment..