Distillers Byproduct Compared to Other Nitrogen Sources as a Fertilizer for Corn

Corn (Zea mays L.) based ethanol and associated byproducts like wet (WDG) production has increased over the past decade. Research was conducted in five environments in North Dakota to determine the nitrogen (N) fertilization value of WDG compared to five other N fertilizer sources. In fertilizer responsive sites, 25% more WDG were required based on N equivalent than other N sources to obtain a similar yield and grain protein when applied in the spring. Effectiveness of WDG were reduced when applied to no-tilled corn. Utilizing WDG as a nitrogen source is not economical at the current product prices of WDG and urea