Farmer: Agricultural techniques such as crop rotation that do not use commercial products may solve agricultural problems at least as well as any technique, such as pesticide application, that does use such products  Nonetheless, no private for-profit corporation will sponsor research that is unlikely to lead to marketable products
Thus, for the most part, only government-sponsored research investigates agricultural techniques that do not use commercial products
Investigations of agricultural techniques are rarely sponsored by individuals or by any entity other than private for-profit corporations or the government.