As world grasps for rice, Cambodia's success story

The rice-exporting country has seen a dramatic rebound thanks to years of agricultural research.

from the May 1, 2008 edition

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Still, as Cambodia also illustrates, scientific advances will only take rice production so far. Although Cambodia's yields have doubled in the last 30 years, they are only almost half that of Thailand and Laos (where better soil conditions, seed varieties, climate and management make for higher outputs). Meanwhile, weeds here still cause rice yield losses of up to 30 percent, and poor seed quality in some areas means that 160,000 tons of rice rot every year, according to a report by the IRRI.

"There are still many problems that need to be addressed – problems from climate change and market changes," say Mr. Sarom.

Scientists also warn that the amount of land being farmed – especially in the developing world – has not increased substantially in the last two decades. Urban sprawl and industrial development continue to compete for farmland.

"Even here in Thailand [the world's largest exporter of rice], even if they wanted to, they can't produce more rice. There isn't much more farmland, and the production level is also already pretty high," says Paul Risley, a spokesman for the World Food Program in Thailand.

The recent global food crisis has sharply underlined that, despite the Green Revolution's benefits, many countries are simply not able to produce enough food for their exploding populations.

But even if the biggest production advances have already been achieved, that doesn't mean scientists are giving up.

CARDI, continues to develop new varieties that can produce better quality rice and withstand inclement weather. Sarom says research is already pointing the way to higher rice yields. "In America and Australia, you have yields of six to eight tons of rice per hectare. Why not here? We still have the potential to increase productivity," he says.

That enthusiasm was echoed by the country's agriculture minister, Chan Sarun, Tuesday when he said he expects Cambodia to produce enough rice to export some 8 million tons a year by 2015. That would make it one of the world's top rice exporters.

And around the world, research still offers the promise of better yields. For example, hybrid rice, a blend of three kinds of rice, grows faster, is more disease resistant, and produces 20 percent higher yields. Hybrids are only just starting to catch on: 800,000 hectares were planted in Asia outside of China between 2001-02, but only 1,000 in Indonesia, for example, and only 20,000 in Bangladesh, according to the Food and Agricultural Organization of the United Nations (FAO). The expanded use of hybrids has particular promise for food security, the FAO adds.

The current food crisis may be creating an investment environment for a second Green Revolution, some analysts say. By averting massive famine, the first Green Revolution helped create an impression among world leaders that investments in agriculture were no longer as vital. Many countries stopped spending on agricultural development. That may be starting to change as Malaysia, the Philippines, and China have in recent weeks announced plans to boost investment in agriculture.

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