In the United States the bushel is used for the measurement of dry goods. Dry measures are units of volume used to measure bulk commodities which are not liquid. Dry measures, such as the bushel, are typically used in agriculture, agronomy, and commodity markets.
The volume of bulk goods is usually measured by filling a standard container. The U.S. level bushel (or struck bushel) is equal to 2,150.42 cubic inches. Although produce measures are referred to in terms of bushels in the United States, produce is referenced and traded on the basis of weight (tons or metric tons) throughout the rest of the world. To facilitate the trading of produce, the USDA created weight standards for each comodity so that, citrus for example, could be weighed to determine the number of bushels rather than trying to make volume measurements. Citrus bushel weight is approximately 45 pounds.