The article provides an overview of the slight decreases in Chicago corn prices over the past week, with March and May contracts experiencing a decline of 0.40% and 0.11% respectively. Factors such as planting agility in Brazil, inflation, oil prices, and a survey of the Safrinha planting progress by Conab contributed to this downturn. Despite lower-than-expected exports, the United States remains a significant corn exporter, with Mexico being the primary buyer. The article also mentions that Mexico does not restrict transgenic fodder corn, which could influence market dynamics.