The empirical evidence in this paper supports the existence of seasonality, time-to-maturity, and long-memory effects in the volatility of prices, but not in the returns themselves, in corn and soybean futures markets. This volatility is modeled as an Orenstein-Ulenbeck process driven by...

Expectations about future economic conditions are important determinants of commodity prices. This paper presents a relatively simple model that makes futures prices for corn a function of expected production and inventories and of variables that account for demand shifts. The intent is to...