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Banana grower
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Re: Oil and Water.(Conventional vs. Organic)
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Originally Posted by sbl
Thanks for the link on Roundup toxicity to human cell lines (not really the same as toxicity to humans).
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"This work clearly confirms that the adjuvants in Roundup formulations are not inert. Moreover, the proprietary mixtures available on the market could cause cell damage and even death around residual levels to be expected, especially in food and feed derived from R formulation-treated crops."
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Your welcome. Human cells are human cells, death is death. There are no reliable long term independant human safety studies focusing on the Roundup formulation or Glyphosate for that matter, and I'd rather not wait 30 years to see the effects. 
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Tests done on glyphosate to meet registration requirements have been associated with fraudulent practices.
Laboratory fraud first made headlines in 1983 when EPA publicly announced that a 1976 audit had discovered "serious deficiencies and improprieties" in studies conducted by Industrial Biotest Laboratories (IBT)." Problems included "countless deaths of rats and mice" and "routine falsification of data."91
IBT was one of the largest laboratories performing tests in support of pesticide registrations.91 About 30 tests on glyphosate and glyphosate-containing products were performed by IBT, including 11 of the 19 chronic toxicology studies.92 A compelling example of the poor quality of IBT data comes from an EPA toxicologist who wrote, "It is also somewhat difficult not to doubt the scientific integrity of a study when the IBT stated that it took specimens from the uteri (of male rabbits for histopathological examination."93 (Emphasis added.)
In 1991, EPA alleged that Craven Laboratories, a company that performed studies for 262 pesticide companies including Monsanto, had falsified tests.94 "Tricks" employed by Craven Labs included "falsifying laboratory notebook entries" and "manually manipulating scientific equipment to produce false reports."95 Roundup residue studies on plums, potatoes, grapes, and sugarbeets were among the tests in question.96
The following year, the owner of Craven Labs and three employees were indicted on 20 felony counts.97 The owner was sentenced to five years in prison and fined $50,000; Craven Labs was fined 15.5 million dollars, and ordered to pay 3.7 million dollars in restitution.95
Although the tests of glyphosate identified as fraudulent have been replaced, this fraud casts shadows on the entire pesticide registration process.
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Think Agent Orange (Dioxin) and PCBs. Monsanto is not exactly who I'd trust with my health. Safe as table salt as you say is something they claimed before loosing two lawsuits in New York and France for false advertizing.
The History of PCBs - When Were Problems Detected
Agent Orange - Wikipedia, the free encyclopedia
Richard, from DOW Chemical:
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In order to determine the extent of environmental exposure to a chemical, it is necessary to evaluate that chemical’s environmental fate. While the amount and frequency of a chemical’s release, as well as the environmental medium — air, water, or soil — into which it’s released are important considerations, environmental fate is determined by what happens after the chemical has been released into the environment.
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As I've said, the numbers you gave are not consistent with other suggested application half life data that's readily available. It pretty much depends on your location and soil type. Here is some info showing how wide spread the numbers can be.
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Note: Numbers, as well as the length of the columns, give the half-life, in days, of glyphosate in soil. Half-life is the length of time required for half the applied glyphosate to break down or move out of the test site.
Source: U.S. EPA. Environmental Fate and Effects Division. 1993. Pesticide environmental fate one line summary; Glyphosate. Washington, D.C., May 6.
Glyphosate's persistence in soil varies widely, but its half-life in agricultural soil can be over 4 months.
Persistence and Movement in Soil
Glyphosate's persistence in soil varies widely, so giving a simple answer to the question "How long does glyphosate persist in soil?" is not possible. Half-lives (the time required for half of the amount of glyphosate applied to break down or move away) as low as 3 days (in Texas) and as long as 141 days (in Iowa) have been measured by glyphosate's manufacturer.119 (See Figure 6.) Initial degradation (breakdown) is faster than the subsequent degradation of what remains.120 Long persistence has been measured in the following studies: 55 days on an Oregon Coast Range forestry site121: 249 days on Finnish agricultural soils122; between 259 and 296 days on eight Finnish forestry sites120; 335 days on an Ontario (Canada) forestry site123; 360 days on 3 British Columbia forestry sites124; and, from 1 to 3 years on eleven Swedish forestry sites.125 EPA's Ecological Effect's Branch wrote, "In summary, this herbicide is extremely persistent under typical application conditions. "126
Glyphosate is thought to be "tightly complexed [bound] by most soils"127 and therefore "in most soils, glyphosate is essentially immobile."127 This means that the glyphosate will be unlikely to contaminate water or soil away from the application site. However, this binding to soil is "reversible." For example, one study found that glyphosate bound readily to four different soils. However, desorption, when glyphosate unbinds from soil particles, also occurred readily. In one soil, 80 percent of the added glyphosate desorbed in a two hour period. The study concluded that "this herbicide can be extensively mobile in the soil ...." 123
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Glyphosate Factsheet (part 1 of 2) Caroline Cox / Journal of Pesticide Reform v.108, n.3 Fall98 rev.Oct00
TX_Crinum, thank you for clarifying was I was attempting to say to Richard. |