The estimated production margin for a typical US Midwest dry-mill ethanol plant for the week ended Friday fell 20.06 cents, or 15.6%, to a six-week low of $1.0854/gal, a review of US Department of Agriculture and Platts data showed. As weekly stocks data and added imports had a starkly bearish effect on ethanol prices, the margin retreated for a fourth straight week from an eight-year high hit in the last week of March. The estimated ethanol price used in calculating the margin was the weekly average of the Platts Chicago Argo ethanol assessment, which tumbled 19.4 cents, or 8.13%, to a seven-week low of $2.3870/gal. Article continues below… Platts Biofuelscan is a daily report, covering the latest worldwide biofuel news and prices. It provides a daily summary of market events and developments, along with closing market price assessments from the Americas, Europe, and Asia. […]