Strikes by truckers, stevedores and customs officials in Brazil have resulted in a backlog of commodities to ship. That’s led to delays in shipping soybeans, which normally peak in April and have increased by 10% on a year earlier in the three months to May 31, just ahead of the start of shipping of corn (which peaks in August). Shipments of soybeans to China are critical – it accounted for 68% of exports year-to-date – though have lagged broader growth due to uncertainties about Chinese duties on U.S. exports. Those have now been implemented alongside a cut in duties for soybean exports...