Overview
One call for authoritative US crop statistics from USDA National Agricultural Statistics Service (NASS) QuickStats, normalized with a computed year-over-year signal. Metrics: production (annual, in the commodity's physical unit), yield (per harvested acre), acreage (acres harvested), and grain stocks (quarterly, the total on-farm plus off-farm figure). Commodities include corn, soybeans, wheat and cotton; a new commodity or metric is one row in the registry. Pass an optional