Idaho potato producers have boosted their acreage this year to the fourth highest level on record.

The government reported that farmers expect to harvest 347,000 acres of potatoes this fall - up 10,000 acres from last year's crop, which produced nearly 10 billion pounds despite drought conditions. It was the third largest harvest ever.The average yield on the 1987 crop was 29,600 pounds an acre, just 100 pounds below the record set in 1985.

The first harvest estimate for this year's crop will not be released until November, but Agriculture Department analysts reported the crop was progressing well despite the second straight year of drought.