Now it has happened - frost in the immature US corn - sharp price jumps to the top What has been announced for several weeks now has actually happened. Early frosts down to -10 degrees Celsius put an end to growth for late-sown corn in its early stages of maturity . Thus, it can be assumed that the US corn crop will be significantly lower than the USDA published in its most recent market report on Oct. 10, 2019 . So far, one can only speculate about the extent of the damage. On the day of the USDA publication, the grain prices had been plunged deep into the basement on the Chicago Stock Exchange , although there were doubts about the numbers. Now the prices are going up steeply. Corn reaches the magic mark of 400 ct / bu (14.25 € / dt) and wheat exceeds the critical mark of 500 ct / bu (17.10 € / dt).On the Paris Stock Exchange , the wheat prices have risen again to 180 € / t and the corn to 165,50 € / t after a short slide. The cold spell is expected to slowly fade over the next week. Then you will increasingly see how big the harvest losses actually are. In any case, further price increases are expected.