A half-assed prediction:
We’ll be seeing a wave of reports about the dangers of petroleum-based fertilizer.
With global warming running afoul of the evidence, and since peak oil paranoia never caught the mainstream, the do-gooders who seek control need a fresh angle.
Even if we switch to a “new economy” of wind and rubber-band power for harvest and transport, the evil oil interests can starve us to death as long as we depend on industrial farming and fertilizer. We must mandate an organic/sustainable agriculture policy IMMEDIATELY.
Our children must be saved from dependence on magnificently productive farming techniques. Each yard a garden, and each man an ox. Night soil is a resource we cannot afford to waste.