Lets all get real about this subject.When has there been real Food Shortage in the Western World, the answer is the First and Second World War and then only in Europe and Japan.There have been times of annual and sometimes biannual but against the main Wars there has never been a real shortage of food.
Population increase: Here we see another prediction,unsound, carried out by Computors with Instruction from Academics with no Handle on real life and very often with a slant to their query on the subject or to the answers they get and Interpret for their Findings.My Travels around the World have found the Young in all countries saying they are not going to have a large Family because they want some enjoyment from life and not a life of drudgery for all.The predicted Population Stats are from past figures and that is dangerous predicting.
World production: well I think in a lot of Industries and Countries they are on Tickover.If the UK got rid of Set a side and grew for ultimate production Cereal production could raise by 40 -50 %.If the By products were used [ Chaff, Straw, Husks, Residues etc], then a very strong output could be achieved in just these core Industries let alone Horticulture which is the sleeping Giant.
So with the exception of War [God forbid ] no Field of Gold and there never has been so what about shortages of Fertilisers and Capital which do look like more certain possibilites.The Farmer who has a Business that develpes a lot of Organic Waste is going to score and the Farmer with his own Capital is going to be in a prime position and I think if I were 20 again they would be my aims and not to rely on Predictions from Electronic Machines with artifical Logic and without the programed input that the poor old Human Brain has accumulated.