CIRS Blog about Rural California

Michael Singer

Michael Singer

Professor Emeritus of Soil Science, Department of Land, Air and Water Resources, University of California, Davis.

Humankind is faced with the continuing challenge of sustainably growing sufficient food to feed an ever-growing population. The United Nations Food and Agricultural Organization [1] citing a United Nations World Population Prospects report predicts that the earth’s population will reach 9.1 billion by the middle of this century.

Much of this growth will be in nations whose populations now suffer from malnutrition or outright starvation. In addition to a growing population, the increase in people will demand more food, more meat, and higher quality food because it will be more urban and wealthier according to FAO. Their estimate is that increased demand will require current food production to rise by 60 percent.

The challenge becomes more acute when it is understood that the land area for growing food is not expanding. Indeed, urban growth onto farmland and loss of arable (farmable) soil by wind and water erosion are reducing the available land area most suitable for farming. More land can be brought into production, but with a potentially high environmental and monetary cost.

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