Insufficient rainfall is becoming a growing concern for soybean farmers in the Brazilian states of Goias and Mato Grosso. Meteorologists say this may no longer be a problem by the end of the month, but soybeans are likely to suffer significant yield declines from the dryness in the interim. Good Week for U.S. Soybean Exports Today's USDA export sales report showed excellent numbers for U.S. soybeans last week. Net sales for shipment in 2014/15 totaled 1.1332 MMT, well above the estimates of private analysts who had predicted the volume would be between 700,000-900,000 MT. Sales for shipment in 2015/16 totaled 305,000 MT. The main destinations for the soybeans sold last week for shipment in 2014/15 were China (793,500 MT), Mexico (149,000...