Selecting corn hybrids to minimize diseases in 2014
Many seed companies will rate how their hybrids react to these common diseases and these hybrid reactions can vary greatly. Many companies also rate their hybrids’ reactions to other diseases, such as eyespot, northern corn leaf blight, rusts, and some stalk rots.
It is important to note that resistance or tolerance to a disease does NOT imply resistance to other diseases. That’s why it’s important to familiarize yourself with the diseases in your fields and position tolerant hybrids appropriately for the best effects.
In addition, it is common for competing seed companies to utilize opposing rating scales in seed catalogs. For instance, a 1-9 scale used by one company may indicate “1” as best while the same scale used by another company may indicate “9” as best. Numerous other rating scales exist. Pay close attention to rating scales and their exact meaning to avoid misinterpretation and contact your local company representative for clarification or if you have any questions.
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