Corn, wheat and soybeans closed out 2023 with steep declines after bumper harvests in Brazil and ongoing Black Sea trade lessened concerns about weather and war, Reuters reported. The most active corn contract closed down 31% over 2023, the steepest decline since 2013. Wheat fell 21% for the year while soybeans lost 15%. Grain and oilseeds are ending a run of several years of price gains due to harvest setbacks, the pandemic and Russia’s invasion of Ukraine, Reuters said.