[header] How to buy corn commodities [title] Understand what factors affect corn production. [step] When trying to predict whether corn will go up or down in price, it is important to know about the agriculture business and what factors lead to a profitable or a lousy harvest. [substeps] Read up on the kinds of corn that are being sewn. 
In recent years, farmers have started to use genetically modified strains of corn that are resistant to disease, require less water and sunlight, and are even resistant to fire and flood. These hardier strains of corn are more likely to yield abundant crops, which can affect the price of corn on the market.