Diplodia Ear Rot
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Diplodia ear rot is one of the most common ear diseases of corn. It’s caused by two species of fungi, Stenocarpella maydis and Stenocarpella macropora. The most characteristic symptom, and the easiest way to tell diplodia ear rot apart from other ear diseases such as Gibberella and Fusarium ear rots, is the presence of white mycelium of the fungus growing over and between kernels, usually starting from the base of the ear. Under highly favorable weather conditions, entire ears may become colonized, turn grayish-brown in color and lightweight (mummified), with kernels, cobs, and ear leaves that are rotted and soft. Rotted kernels may germinate prematurely, particularly if the ears remain upright after physiological maturity. Corn is most susceptible to infection at and up to three weeks after silk emergence (R1). Wet conditions and moderate temperatures during this period favor infection and disease development, and the disease tends to be most severe in no-till or reduce-till fields of corn planted after corn. The greatest impact of this disease is grain yield and quality reduction. Mycotoxins haven’t been associated with this disease in the U.S., but animals often refuse to consume contaminated grain.
There is a lot of information available on this disease. These websites have more information.
MPCI Claims for Diplodia Ear Rot
As diplodia ear rot relates to crop insurance, keep in mind the following:
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