Soybean prices in Indore down tracking weakness in CBOT contracts and on expectations of a rise in arrivals in the domestic market. In Madhya Pradesh, arrivals of soybean pegged at around 400,000 bags (1 bag = 100 kg) as against 350,000 bags. Soybean contracts declined because of selling by investors ahead of the global monthly supply-demand report by the US Department of Agriculture.