Corn and soybeans prices have risen nearly to records, signaling higher food inflation to come. Global food prices had already reached records when Russia invaded Ukraine in late February and jeopardized big slices of the world’s grain and oilseed supplies. Poor harvests in South America, inclement planting weather in the U.S. and rising biofuel demand threaten to stretch inventories even thinner and push prices higher. Continue reading your article with a WSJ membership View Membership Options