Corn and wheat futures at the Chicago Board of Trade reached their lowest levels in six weeks and over a month, respectively, due to concerns over global export competition and technical selling. The decline in prices is attributed to the anticipation of increased U.S. corn production in 2023, economic concerns, and the flow of cheap wheat from the Black Sea region, thanks to the extended grain deal following Russia's invasion of Ukraine. Additionally, soybean futures also saw a decrease, influenced by competition from cheaper supplies in Brazil and reduced expectations from drought-stricken Argentina.