About 5 percent of the nation's growers rely on, to some extent, fruit and nut production for part of their income.

Those that rely on fruit and nut sales for at least half of the value of their on-farm production are referred to as "specialized fruit and tree nut farms," according to the Economic Research Service.

This branch of the U.S. Department of Agriculture analyzed the economics of this sector in a new report, dubbed "Specialized U.S. Fruit and Tree Nut Farm Production Expenses."

Among the trends it found were the farms were becoming fewer but larger.

Labor was the largest cash expense, followed by fertilizer and other agricultural chemical inputs.

To read the full report, visit http://www.ers.usda.gov.