Chicago soybean and corn futures were higher in see-saw trading on the first trading day of 2025, supported by ongoing concerns related to dry weather in South America, especially Argentina, a leading producer of both commodities. Meanwhile, wheat fell as the dollar rallied and stiff export market competition weighed on prices, analysts said on Thursday.All three commodities had a volatile morning as thin volumes led to see-sawing trade in each market, with many participants still on vacation after the Christmas and New Year’s holidays.The most active soybean contract on the…