Pre 'computerized/EPA'd' diesel engines are where it's at.
That technology peaked awhile back.
Still possible to grow food without the latest 'improvement'.
The level of production per acre has for sure increased with new practices not necessarily new technologies. Some of both I guess.
The medical field is really the only thing I think we need to keep improving on. Amazing what our doctors and scientists can figure out.
I guess it depends on your definition of technology. Those diesel engines you mention are certainly technology. All the fertilizers, pesticides, and even those "practices" you mention are technologies developed, often, in our universities. In the last 110 years we've gone from it taking 30% of the population to feed this country, to 2% feeding it 10 times over.
The modern American farmer is an incredible marvel of modern innovation.
