According to the head of global investment firm GMO Jeremy of Gintama, although the persistent drought that gripped much of the USA, has already contributed to the growth of prices for agricultural raw materials, it is only the beginning of rising food prices.

"We are at a distance of approximately five years from chronic food crisis, which is unlikely to subside in the next few decades, at least until the planet's population were reduced drastically from its eventual peak in more than 9 billion people by 2050", wrote in his quarterly letter to investors Grantham.

The food crisis will threaten poor countries, where will increase the threat of malnutrition, hunger and even collapse," he adds. "Bickering over resources and waves hungry migrants will threaten global stability and global growth."

Grantham believes that the main factors of the crisis will be a surge in demand for food from a growing global middle class, lower grain yields, deterioration of water supply and the rising cost of fertilizer and fuel for food.

Food production by 2050, it is necessary to increase 60-100 percent to fully provide food for the 9 billion people of the Land, he said.

"The result for the investment portfolio will be that investors should expect significant growth of the share of resource extraction - especially from the earth's interior - companies, as real prices for resources will only increase", says Grantham. However, above all in the list are the promotion of forestry and agriculture. Serious long-term investors should have a significant advantage in its resource package".

About 64 percent of the U.S. are experiencing drought, while the National oceanic and atmospheric administration studies reported that 2012 was the hottest ever. The heat and lack of rain has had a strong negative effect on the harvest of corn and other crops.

Economist of the Ministry of agriculture of the USA Richard the fol said, "as a result of the drought, in 2013, is expected food inflation is above the average. The ordinary consumer definitely feel".