In the tiny tortillerias of this city, people complain ceaselessly about the high price of corn. Just three years ago, one quetzal — about 15 cents — bought eight tortillas; today it buys only four. And eggs have tripled in price because chickens eat corn feed.

Meanwhile, in rural areas, subsistence farmers struggle to find a place to sow their seeds. On a recent morning, José Antonio Alvarado was harvesting his corn crop on the narrow median of Highway 2 as trucks zoomed by.

“We’re farming here because there is no other land, and I have to feed my family,” said Mr. Alvarado, pointing to his sons Alejandro and José, who are 4 and 6 but appear to be much younger, a sign of chronic malnutrition.

Recent laws in the United States and Europe that mandate the increasing use of biofuel in cars have had far-flung ripple effects, economists say, as land once devoted to growing food for humans is now sometimes more profitably used for churning out vehicle fuel.

via In Fields and Markets, Guatemalans Feel Squeeze of Biofuel Demand – NYTimes.com.