Farm Futures
A three-day frost that took place last week in the South Western states of Brazil in Parana, Mato Grosso do Sul, Sao Paulo, Brazil, as well as Paraguay, are leading to lower corn yield projections.
Yield losses directly related to the frost are difficult to estimate, but according to Corteva, corn plants are extremely sensitive to frost, depending upon what stage they are in. Yield loss can reach as high as 66% in R4 stage. Most corn in Parana was in the R5.5 stage, where yield loss could reach 10%. Corn needs to reach R6 before it can withstand damage from frost.