Food Problem

I recently read an interesting piece of statistics
In terms of R&D specing on food;
95% of the spending is done on pre-harvest R & D initiatives like seeds, fertilizers, irrigation, etc.
Only 5 % of the spending is on post-harvest initiatives like logistics, storage,market-making etc.

This is after we all know that more than half of the food grain output is lost to reasons like improper storage resulting in food grains being consumed by rodents.

The problem identification in this area has gone completely wrong else we would have enough grains to feed the entire world twice.