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Archive for August 18th, 2014

Vomitoxin Levels Rising in U.S. Wheat

Posted by feww on August 18, 2014

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Vomitoxin levels rise in wheat samples  across nine U.S. states

Fusarium head blight of wheat (FHB), also known as ‘head scab,’ is caused mainly by the fungus Gibberella zeae (aka Fusarium graminearum). The disease has previously caused significant yield loss and reduced grain quality in the U.S. costing the industry about $3 billion from 1998 to 2000, and more than $4.5 billion in 2011. Gibberella zeae also produces mycotoxins—chemicals that are toxic to humans and livestock.

The fungus has plagued the  soft red winter (SRW) wheat, which develops when it rains during the crop’s key growing stages.

As little as two or three days of light to moderate rainfall can favor infection. Optimum temperatures for infection are between 75°F and 85°F, but during prolonged periods of high humidity and moisture, infection will occur at lower temperatures. The initial infection on the wheat head may produce additional spores that can infect other wheat heads. This secondary infection can be especially problematic in uneven wheat stands with late flowering tillers.

Infection will continue as long as weather conditions are favorable and wheat plants are at susceptible growth stages.

Bleached and shriveled tombstone kernels (left) compared to healthy wheat kernels. Seed infected with Fusarium graminearum can produce seedlings affected by seedling blight when planted. Infected seeds will have poor germination and the resulting seedlings may be slow to emerge. Infected seedlings will be reddish-brown to brown, will lack vigor, and will tiller poorly. Source: Purdue Extension [BP-33-W]

SRW is grown in a large eastern section of the United States, in the south from Louisiana and Arkansas across to the Carolinas and in the north from Missouri across the Midwest to Pennsylvania and Maryland, accounting for a fifth of the U.S. total wheat crop in the last five years, said a report.

A preliminary survey conducted by the U.S. Wheat Associates showed composite vomitoxin level from more than 500 samples across nine states were about twice the five-year average of 1.3 ppm, said the report.

“We’re seeing about 10 ppm and I don’t know that we have seen that before. The elevators are not sure what they’re going to do with that wheat,” said a grain merchant at a milling company based in Illinois.

The U.S. Food and Drug Administration (FDA) limits vomitoxin levels in finished products such as flour to 1 ppm.

“It is in a lot of the wheat, areas east of the Mississippi River would be the most suspect, all along the U.S. Gulf and through the Eastern Seaboard. There were even high levels coming out of Pennsylvania,” said a livestock nutritionist at a feed company based in Kentucky.

Risk of Mycotoxins

Gibberella zeae produces the mycotoxin, deoxynivalenol (DON), also known as vomitoxin.

DON is an extremely stable mycotoxin and drying and storing grain will
not reduce DON levels in harvested grain.

The fungus may also produce another mycotoxin, zearalenone, however this mycotoxin is not as common in wheat as DON. Zearalenone has estrogenic properties, which means it can cause infertility, abortion, or other breeding problems. As little as 1 to 5 ppm zearalenone ina feed ration may produce an estrogenic effect in swine.

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Missouri Gov. Orders the National Guard to Ferguson

Posted by feww on August 18, 2014

“Extraordinary circumstances” surrounds black teenager’s death: Third autopsy ordered

Residents in the St. Louis suburb have been protesting police brutality after an unarmed black teen was fatally shot by a white police officer.

A preliminary private autopsy found Brown was shot at least six times, including twice in the head, reported The New York Times.

Meantime, Nixon ordered the National Guard to the city, saying they would help “in restoring peace and order” to Ferguson.

Police claimed that protesters had hurled Molotov cocktails at them. And at least two people were shot by “civilians.”

Nixon had declared a state of emergency and imposed a curfew for the city.

“We must first have and maintain peace. This is a test. The eyes of the world are watching,” Nixon said. “We cannot allow the ill will of the few to undermine the good will of the many.”

“This is not to silence the people of Ferguson, of this region or others, but to contain those who are drowning out the voice of the people with their actions,” Nixon said. Brown was shot to death last Saturday afternoon.

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Hundreds Injured after Strong Earthquake in Iran

Posted by feww on August 18, 2014


M6.2 Quake Strikes Western Iran

 Centered at 32.739°N, 47.670°E the quake occurred at a depth of about 10.0km (6.2mi), said USGS/EHP.

The mainshock was preceded by a M5.0 foreshock, and followed by at least 8 significant aftershocks, the largest of which measured 5.8Mw as of posting.

The quakes struck western Iran, near the border with Iraq. Induced seismicity cannot be ruled out.

The quake has injured hundreds of people and caused extensive damage to buildings in the nearby town of Mour-Mouri, said news agencies quoting local media.

Iran quake 18-8-2014
EQ Location Map. Source: USGS/EHP

Earthquake Details
Magnitude: 6.2Mw
Event Time: 2014-08-18 02:32:05 UTC
Location: 32.659°N 47.715°E depth=10.0km (6.2mi)
Nearby Cities:

  • 36km (22mi) SE of Abdanan, Iran
  • 37km (23mi) E of Dehloran, Iran
  • 78km (48mi) WNW of Dezful, Iran
  • 81km (50mi) NW of Shush, Iran
  • 312km (194mi) ESE of Baghdad, Iraq


For detailed earthquake forecasts tune into FIRE-EARTH Reports daily @ 06:32UTC.

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