FEATURED POSTS: WET WEATHER CONCERNS
The following are older posts that address wet weather issues such as flood and storm damage and increased chance for fungal disease at harvest.
With soybean rust being observed in late August in Giles County, Tennessee (south-central TN), and with Hurricanes Harvey and Irma potentially carrying and depositing spores of the soybean rust fungus in Kentucky, the detection of soybean rust in Kentucky this year is eminent.
New soybean disease resources.
The latest resources regarding ear rot and mycotoxins.
Reports of flooded corn are coming in from around Kentucky. Corn survival is dependent on the crop stage, the depth of flooding, the duration of flooding and the soil type in the field as well as other factors. The following are some key points to corn survival after flooding.
Heavy rains and winds occurred the July 13 and 14, 2015. Farmers, county agents and students submitted images of the damage that resulted. Each image contains a short caption to identify the issue. Several days are needed before we can fully determine crop recovery and the extent of the damage.
Numerous fields of soybeans appear yellow or bright green right now. The symptoms mimic nitrogen deficiency, but the plants are really starving for air to the roots and sun on the leaves. Everyone is thinking about applying some nitrogen to help make the plants greener. But what these plants really need is for sunshine to help partially dry the soils.
Corn in most fields across the state displayed nitrogen (N) deficiency before black layer was reached. Those losses were expected this season as we experience more rain. Normally, we expect yield losses to occur when the corn crop runs low on N before the seeds are done developing on the cob. However, walking some of these fields reveals that corn yields should be very good despite the apparent lack of N.
Corn grain can be naturally contaminated by mycotoxins, natural toxins produced by fungi. Though most Kentucky corn crops are free of mycotoxins, fumonisins are the most common threat.
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