Soybean futures climbed to their highest level in 20 months on Thursday as traders anticipate the US Environmental Protection Agency's upcoming biofuel blending quota submission. The surge reflects market positioning ahead of what could be a significant policy shift affecting agricultural commodities. Soybean prices have been volatile amid changing demand patterns and weather concerns in major producing regions.

Biofuel policies directly impact soybean demand since soybeans are a key feedstock for biodiesel production. The EPA's blending requirements determine how much biofuel must be mixed into the diesel supply, creating a direct link between regulatory decisions and commodity prices. Traders are closely watching for any changes that might alter the supply-demand balance for soybeans.

Market analysts note that the timing of the EPA's announcement could influence planting decisions for the upcoming season. Higher quotas would support prices by boosting demand, while lower requirements could pressure the market. The biofuel sector's growth has been a crucial driver for agricultural markets, particularly for crops used in renewable fuel production.