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johnson grass
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<blockquote data-quote="1982vett" data-source="post: 691775" data-attributes="member: 7795"><p>Two things plague Johnson Grass. Nitrate poisoning (heavy fertilization) and Prussic Acid Poisoning. </p><p></p><p><em>Prussic Acid Poisoning</em></p><p><em><a href="http://stephenville.tamu.edu/forages/fot/ad/prussicacid.html" target="_blank">http://stephenville.tamu.edu/forages/fo ... cacid.html</a></em></p><p><em></em></p><p><em>Prevention: If plants have been injured defer grazing until they are recovered from injury. After a hard freeze, or severe drought, avoid grazing for approximately 1 week. After a rain or irrigation on drought stressed fields wait at least 2 weeks after plants begin to grow before grazing. </em></p><p></p><p>Very much a concern lately after some decent rains after a prolonged dry period. After our recent rainfall windfall, I waited about 16 days after green-up to turn in on some haygrazer. Also made sure it didn't show signs of heat stress before I turned in. Did not have any sign of problems from either nitrates or prussic acid. But it definitely can cause some problems if things are wrong. </p><p></p><p>You can cut forages that show prussic acid present because it will dissipate as it cures. Need to let it cure for 5-7 days. Nitrates do not dissipate. All you can do their is dilute.</p><p></p><p>You can have forages tested for nitrates and prussic acid.</p></blockquote><p></p>
[QUOTE="1982vett, post: 691775, member: 7795"] Two things plague Johnson Grass. Nitrate poisoning (heavy fertilization) and Prussic Acid Poisoning. [i]Prussic Acid Poisoning [url=http://stephenville.tamu.edu/forages/fot/ad/prussicacid.html]http://stephenville.tamu.edu/forages/fo ... cacid.html[/url] Prevention: If plants have been injured defer grazing until they are recovered from injury. After a hard freeze, or severe drought, avoid grazing for approximately 1 week. After a rain or irrigation on drought stressed fields wait at least 2 weeks after plants begin to grow before grazing. [/i] Very much a concern lately after some decent rains after a prolonged dry period. After our recent rainfall windfall, I waited about 16 days after green-up to turn in on some haygrazer. Also made sure it didn't show signs of heat stress before I turned in. Did not have any sign of problems from either nitrates or prussic acid. But it definitely can cause some problems if things are wrong. You can cut forages that show prussic acid present because it will dissipate as it cures. Need to let it cure for 5-7 days. Nitrates do not dissipate. All you can do their is dilute. You can have forages tested for nitrates and prussic acid. [/QUOTE]
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