By Mike Kavanaugh, AgriGold Agronomy Manager
As the first significant cold front of the 2012 growing season passes through, many
questions are arising concerning the fate of planted corn in the case of near or below freezing temperatures. With such a warm, early spring, many acres have been planted throughout the central and southern Corn Belt.
The key through the frost evaluation process is to understand the growth pattern of these small corn plants and give it at least a week for proper evaluation. Obviously, the bigger the corn is, the more susceptible it is to freeze injury. This is true because the depth of the growing point becomes shallower within the soil surface as the plant continues to grow. Keep in mind that the growing point or crown is located at approximately .75-inch below the soil surface, providing that planting depth itself was below 3/4 inch. The growing point does not actually reach the soil surface until the plant reaches the V5-V6 growth stage.… Continue reading