News From Great Lakes Hybrids

OSU's CORN Newsletter 9-OCT-17

Oct 11, 2017, 10:18 AM by Clint Hawks

 

Ear Disorders Appearing in Corn Fields

Author(s): Peter Thomison
In recent weeks, I have received several reports of abnormal ear development in corn fields which are near or at harvest maturity. Affected plants in these fields exhibit varying degrees of ear development with little or no kernel formation. Some ear shoots carry a barely visible rudimentary ear or only the short remnant of an ear (Figs. 1 and 2).

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Dangers of Harvesting and Grazing Certain Forages Following a Frost

Author(s): Mark Sulc
As cold weather approaches, livestock owners who feed forages need to keep in mind certain dangers of feeding forages after frost events. Several forage species can be extremely toxic soon after a frost because they contain compounds called cyanogenic glucosides that are converted quickly to prussic acid (i.e. hydrogen cyanide) in freeze-damaged plant tissues. Some legumes species have an increased risk of causing bloat when grazed after a frost. In this article I discuss each of these risks and precautions we can take to avoid them.

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Dodder (Cuscuta spp.) in Western Ohio Red Clover Stands

Author(s): Mark Loux
We have had reports of dodder in some red clover fields. Dodder is a parasitic plant without any leaves or chlorophyll to produce its own energy.It lives by attaching to a host with small appendages (called ‘haustoria”), and extracting the host plant’s carbohydrates. The stems are yellow-orange, stringlike, twining, smooth and branching to form dense masses in infested fields. Although neither toxic nor unpalatable to some livestock, dodder can weaken host plants enough to reduce yield, quality, and stand.If infestations are severe enough, dodder may kill host plants.

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