Earlier quoted context omitted.
Functioning ecosystems do provide pest control, otherwise there would not be ecosystems at all, because some pest would just destroy the entire thing. There are very well established agricultural systems that use that principle and employ it to enable commercial farming without pesticides and herbicides while retaining high productivity. Search for syntropic agriculture and New Forest Farm (Mark Shepard).
> Functioning ecosystems do provide pest control, otherwise there would not be ecosystems at all, because some pest would just destroy the entire thing. Yeah, but a natural ecosystem isn't agriculture, and the concept of a "pest" doesn't even make sense in one. Agriculture is engineering an unnatural surplus for human consumption, and keeping everything else from eating that surplus. "Pests" are non-human organisms t…
If that is the case (and there were no other alternatives) the dominant form of agriculture (industrialized monoculture) is more or less tailor made to be attractive to pests and an enormous amount of energy and labour has to be employed to keep them out, much more than in the regenerative systems I've highlighted.
> I'm skeptical those have compatible productivity to typical commercial farming techniques
Way to be skeptical without even bothering to do a Google search. Mark Shepard claims (and has 20 years of data to back it up) that his system is of a comparable productivity in terms of human-usable calories to an industrialized corn operation. Syntropic agriculture was developed on a plot of land that was degraded by conventional agricultural methods to the point that it was given up and it now provides the basis for a commercially successful farm. Plenty of other examples around as well.
> […] or it requires far more labor input than is practical for modern society.
"Modern" societies employ between 0.5 and 3% of their workforce in agriculture [1]. If we'd tripple the share of agricultural workforce but in return drastically reduce the energy use and make farming a net carbon sink instead of a substantial contributor to global warming, I think it would be very much "practical". As things stand, we could pull the required labour simply from people doing tele-marketing and nothing of value would be lost ;-)
[1] https://data.worldbank.org/indicator/SL.AGR.EMPL.ZS?location...