Markets were soft in the Sunday evening session. There was light rainfall across 20-25 percent of Argentina with another chance for showers later this week. The forecast for the southern Plains still looks warm and dry, but KC wheat futures were the weakest overnight. Concerns over the expanding length of fund longs in corn and soybeans coupled with last Friday’s very weak closes kept the trade nervous heading into this week. Markets weakened further at today’s opening and never found much additional selling, gradually returning to unchanged or slightly higher. USDA announced two corn export sales this morning: 108,000 MT to Japan and 255,000 MT to unknown. U.S. equity markets started the day quite strong and then turned mixed...