Corn prices rose on Wednesday, as the US dollar fell against most of its peers, in technical trading despite renewed optimism about the weather in South America.

Brazilian weather agencies forecast that some areas in the country will see heavy rains in the coming period, which supports the quality and quantity of crops.

The US Department of Agriculture reported earlier this week that exports of corn and soybean rose during the past week and thousands of tonnes were shipped to various destinations.

Corn March futures rose 0.6% to $4.23 per bushel, with today's high at $4.24, and the low at $4.14.