Many Germans, even before World War I, believed that Germany needed to occupy Lebensraum or living space in other countries to achieve resource security. Also in the early 1900's scientists around the world worried about global food shortages resulting from exponential population growth outpacing agricultural production. Part of this included the anticipated exhaustion of the world's supplies of saltpeter and guano fertilizers.
In light of world-wide food shortages during the 1930's, why didn't Germany and other countries pursue an intense agricultural policy, especially since the means to achieve improvements (synthesis of fertilizer and selective breeding) were already available? Shortly after World War 2, once countries stepped down from war footing, the green agricultural revolution led to wide-spread use of synthetic fertilizer and higher-yielding plants. I wonder if the unprecedented marshalling of scientific efforts for developing the atomic bomb (and other WW2 military innovations) had instead been directed towards improved agricultural development, if the Green Revolution could have occurred a couple decades earlier. Though even today Germany doesn't produce all of its own food, the promise of wide-spread availability of food might have assuaged German concerns about resource insecurity. As a side note, it also seems especially ironic to me that Fritz Haber, one of the scientists who discovered how to synthetically produce ammonia -a key components of fertilizer- was a German Jew who had to unceremoniously flee Germany.
Germany was a world leader in chemistry and industrialization. Focusing this on the German perspective, did German agricultural scientists appreciate the promise of improved agriculture? The Green revolution seems to have unfolded along with internationalization of agricultural trade, and certainly German physicists collaborated with peers in other nations. From what I can tell, the improved crop varieties were propagated by hybridization rather than bioengineering and so the experimental techniques seem to have already been in hand. I wonder if a war-defeated German population would have supported Hitler's territorial expansion and the horrific racial ideology that he argued justified it if there was a more promising alternative.