Hayenga, Marvin L.Buhr, Brian L.2017-05-102017-05-101989-02-15https://hdl.handle.net/1813/49674It is not necessarily size, but management sophistication that really makes a difference in the successful use of PST. Larger, more specialized operations are more likely to make effective use of this relatively sophisticated technology.en-USAttribution-NonCommercial-NoDerivatives 4.0 InternationalAgricultural biotechnologyanimal healthdisease controlhuman healthgrowth promotantsprice controlsoverproductionarticle