Food production increase?

Monsanto says it wants to double food production in 20 years. Actually, here is the problem. The new types of corn have higher yield, but need more water and fertilizer than the old.

It is water that is critical. Due to global warming the evaporation rate is higher and the soil is dryer. The new types of corn die a lot faster than the older more resistant types so the chance of famine is much greater.

I predict massive food shortages in the future. As the world runs out of food, there will be pressure to stop conversion of food to fuel. The biofuels are underfire because were are already short of food as it is. Walmart is rationing rice.