Soybean futures contracts ended this Thursday (31) in decline on the Chicago Stock Exchange, with negative pressure mainly caused by China's absence in purchase reports and the fear of new trade tariffs. According to analysis by TF Agroeconômica, the August contract, a benchmark for the Brazilian crop, fell 0.62%, closing the session at US$ 961.75 per bushel. The September contract retreated 0.64%, quoted at US$ 969.50.