Soybeans traded on the Chicago Board of Trade (CBOT) closed Tuesday (15) with a slight decline, pressured by the start of mutual port tariffs between the United States and China, which practically make grain trade between the two countries unfeasible. According to analysis by TF Agroeconômica, the technical buying movement at the end of the session was not enough to reverse the accumulated losses throughout the day, keeping the market in a cautious pace.