Definition
Description
For the crops that are planted in the spring and harvested in the fall (corn, cotton, soybeans, spring wheat, for example) the planted acreage numbers are initially derived from the USDA Prospective Plantings Report, which is released at the end of March. That number is updated in July after the release of the Planted Acreage Report at the end of June. However, there has been at least one year in which the acreage number had to be re-surveyed because heavy rains delayed plantings and caused producers to either switch crops or skip planting on some acres that year. The acreage estimate for winter wheat, which is planted in the fall and harvested in the spring, is informed by the January Winter Wheat Seedings report.
Harvested acreage is a subset of planted acreage, as not all planted acres get harvested. Excessive rain, drought or other events can reduce harvested acres.
The yield numbers are initially based on trend line estimates. Sometimes they are revised up or down during the season if the weather is particularly favorable or unfavorable. However, the USDA is very conservative about making any changes during the season.
When the crop is still in the ground, the production estimates are determined by the harvested acreage and yield estimates. As the harvest gets underway, the USDA is able to collect objective data on actual production. The first objective production data for winter wheat usually shows up in the May report. The first objective production data for spring wheat, cotton, corn and soybeans usually shows up in the August report. Winter wheat production numbers are usually finalized by the August report, corn and soybeans by November, and cotton by December, but the numbers can be revised at later dates.
Orange production data usually starts with the October report and continues through July. Other crops are included in the reports as well, including oats, barley, sorghum, potatoes, tobacco, lemons, apricots, almonds, such as tobacco.