CBOT Corn ZCH24 on Jan. 24 with Bollinger bands. (Barchart)

U.S. grains: Corn up 1.3 per cent on South America weather worries, softer dollar

Wheat futures ended up 2.4 per cent on technical buying and weakness in the dollar

Reading Time: 2 minutes Chicago Board of Trade corn futures rose 1.3 per cent on Wednesday as uncertainty about crop prospects in South America and a setback in the dollar triggered a round of short-covering and lifted the benchmark corn contract Cv1 from three-year lows set last week, traders said.