Hey Moriarty,
I really dont like them - cause I love them.
I like the idea regarding the pesticides and the special seeds.
However, I think the sulfur consumption for the pesticides could be reduced a bit so that you aren't forced to build a mega-factory or rely on imports. What also would bei nice, when the perticides where produced in the chemikal-plant (optical)
As for the special seeds, I could imagine different—and more logical—recipes.
For instance:
Using a portion of the existing crops combined with medical supplies.
This way, you could incorporate at least two different tiers—corresponding to the types of medical supplies used.
Perhaps it could even be combined with fertilizer and the blue Gas (i've forgot the english Name)