Two today, both ag related: First, Pigs have 'evolved to love mud', at BBC:
That analysis has led Dr Bracke to propose that mud wallowing, like rolling, could play a role in reproduction in pigs.Second, Why Is Damning New Evidence About Monsanto's Most Widely Used Herbicide Being Silenced, at Alternet. If Don Huber at Purdue is correct about Roundup, we've got a serious problem on our hands:
But more fundamentally, Dr Bracke suggests the behaviour could have evolved in pigs' most ancient relatives.
"We all evolved from fish, so it could be that this motivation to be in water could be something that was preserved in animals that are able to do so."
For many animals, this would be too dangerous, because watering holes are ideal places for predators to ambush their prey.
"But pigs, like many carnivores, are relatively large animals with enlarged canine teeth, so they would be better able to fend off an attack."
So rather than pigs needing to cool down in mud because they do not have [functional] sweat glands, Dr Bracke thinks that they "did not evolve functional sweat glands like other ungulates because they liked wallowing so much".
But Huber says this is not true. First of all, he points out, evidence began to emerge in the 1980s that "what glyphosate does is, essentially, give a plant AIDS." Just like AIDS, which cripples a human's immune system, glyphosate makes plants unable to mount a defense against pathogens in the soil. Without its defense mechanisms functioning, the plants succumb to pathogens in the soil and die. Furthermore, glyphosate has an impact on microorganisms in the soil, helping some and hurting others. This is potentially problematic for farmers, as the last thing one would want is a buildup of pathogens in the soil where they grow crops.
The fate of glyphosate in the environment is also not as benign as once thought. It's true that glyphosate either binds to soil or is broken down quickly by microbes. Glyphosate binds to any positively charged ion in the soil, with the consequence of making many nutrients (such as iron and manganese) less available to plants. Also, glyphosate stays in the soil bound to particles for a long time and can be released later by normal agricultural practices like phosphorus fertilization. "It's not uncommon to find one to three pounds of glyphosate per acre in agricultural soils in the Midwest," says Huber, noting that this represents one to three times the typical amount of glyphosate applied to a field in a year.
Huber says these facts about glyphosate are very well known scientifically but rarely cited. When asked why, he replied that it would be harder for a company to get glyphosate approved for widespread use if it were known that the product could increase the severity of diseases on normal crop plants as well as the weeds it was intended to kill. Here in the U.S., many academic journals are not even interested in publishing studies that suggest this about glyphosate; a large number of the studies Huber cites were published in the European Journal of Agronomy.
If Huber's claims are true, then it follows that there must be problems with disease in crops where glyphosate is used. Huber's second letter verifies this, saying, "we are experiencing a large number of problems in production agriculture in the U.S. that appear to be intensified and sometimes directly related to genetically engineered (GMO) crops, and/or the products they were engineered to tolerate -- especially those related to glyphosate (the active chemical in Roundup® herbicide and generic versions of this herbicide)."
He continues, saying, "We have witnessed a deterioration in the plant health of corn, soybean, wheat and other crops recently with unexplained epidemics of sudden death syndrome of soybean (SDS), Goss' wilt of corn, and take-all of small grain crops the last two years. At the same time, there has been an increasing frequency of previously unexplained animal (cattle, pig, horse, poultry) infertility and [miscarriages]. These situations are threatening the economic viability of both crop and animal producers."
Some of the crops Huber named, corn and soy, are genetically engineered to survive being sprayed with glyphosate. Others, like wheat and barley, are not. In those cases, a farmer would apply glyphosate to kill weeds about a week before planting his or her crop, but would not spray the crop itself. In the case of corn, as Huber points out, most corn varieties in the U.S. are bred using conventional breeding techniques to resist the disease Goss' wilt. However, recent preliminary research showed that when GE corn is sprayed with glyphosate, the corn becomes susceptible to Goss' wilt. Huber says in his letter that "This disease was commonly observed in many Midwestern U.S. fields planted to [Roundup Ready] corn in 2009 and 2010, while adjacent non-GMO corn had very light to no infections." In 2010, Goss' wilt was a "major contributor" to an estimated one billion bushels of corn lost in the U.S. "in spite of generally good harvest conditions," says Huber.
The subject of Huber's initial letter is a newly identified organism that appears to be the cause of infertility and miscarriages in animals. Scientists have a process to verify whether an organism is the cause of a disease: they isolate the organism, culture it, and reintroduce it to the animal to verify that it reproduces the symptoms of the disease, and then re-isolate the organism from the animal's tissue. This has already been completed for the organism in question. The organism appears in high concentrations in Roundup Ready crops. However, more research is needed to understand what this organism is and what its relationship is to glyphosate and/or Roundup Ready crops.
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