Growth and development
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Normal growth and development
Typical corn development stages described by age in days and physical characteristics of the kernel and cob. 2012.
Weather and crop damage
Field Guide for Evaluating Corn Damage and Replant Decisions
A guide to help growers evaluate damage due to factors like hail, insect feeding, and flooding, and make the decision whether or not replanting is necessary. Download the guide (47.7 KB PDF).
Agronomic and disease issues for corn and soybean exposed to prolonged periods of high soil moisture and cool temperatures. 2014.
Dry conditions could affect the success of pollination, but ultimately kernel loss will depend on current soil moisture levels and future rainfall. Crop News, 2012.
Crop News, 2016
Crop News, 2015
Early corn emergence dates increase the risk of spring frost damage, especially in low-lying areas in the northern part of Minnesota. Crop News, 2010.
Frost damage will make corn stand evaluation more difficult, but most fields are expected to recover from the frost well. Crop News, 2010.
Wind and hail
Assessing hail damage and making replant decisions can be difficult, with many variables to consider on your way to making a final decision. 2014.
Types of damage observed in wind and hail affected corn plants, along with root lodging and stalk breakage from high winds. Crop News, 2008.
Symptoms of frost damage, estimating yield loss and frost's effect on grain quality. Crop News, 2014
Crop News, 2011.
Late-maturing corn is susceptible to frost before reaching maturity. Crop News, 2008.