Risk of early frost in the US corn belt drives up prices A cold front zone moves from southwestern Canada to the east . The US corn and soy belt will be covered over. For the US corn and soybean harvest this weather development is of particular importance this year. The sowing in the spring is almost 1 month late , so that the plant development has progressed too little. On average, only 70% of the maize stocks are in the maturity phase. In some northern growing areas it is only 50%. In the southern US states, however, 18% of the fields have been harvested (as of 30.09.2019). If the cold front is to go through the maize / soya belt on a broad scale, then especially the northern growing areas will have to reckon with considerable losses . Already the harvest estimates so far estimated from yield losses in the amount of 8 to 12%. Further cuts are expected. It could become the lowest US corn crop in recent years.As the world's largest maize exporter, US exports will be much smaller, reducing global supply. The EU as maize importer will feel this development. On the Chicago Stock Exchange, corn prices have risen by € 0.6 / dt within one day.