There is plenty of land under cultivation. We already produce enough calories to feed every person on earth, they just aren't distributed sufficiently. Current

There is plenty of land under cultivation. We already produce enough calories to feed every person on earth, they just aren't distributed sufficiently. Currently you have most of the California central valley planted in high margin crops like almonds and pistachios because they maximize farmer profits (despite their unsustainable demands on the water supply). If the goal was to maximize human nutrition the land use would look very different.