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Northern Illinois Agriculture

University of Illinois Extension
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Bring on the heat

Posted by Russel Higgins - Corn

Three consecutive days where we have reached 80 degreesĀ  have been beneficial to the planted corn at the NIARC. This is especially true on behalf of our earliest planted corn (March 29). This corn emerged on April 16th and over the next 13 days was exposed to seven freezing or near freezing events resulting in some tissue damage on the leaves. Corn normally makes the transition to its nodal root system near V3 and is no longer dependent upon the kernel reserves to sustain its growth. Prior to this stage the seedling is particularly susceptible to a number of issues including insect damage or disease. Expediting the transition from seedling stage to V3 is beneficial to the plants. This is accomplished by accumulated GDD's.


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