Posted by Eldon (WA) on January 29, 2015 at 21:35:14 from (98.247.110.251):
In Reply to: Roundup and cookies? posted by Ralphwd45 on January 29, 2015 at 17:32:00:
Most herbicides are considered low or moderately toxic. All chemicals have a half-life in the environment. Half-life is defined as the amount of time it takes to biodegrade one half of the original amount. Herbicides are broken down by sunlight and microbial activity in the soil.
All chemicals are assigned Lethal Dose (LD 50) numerical values through certain testing procedures. What LD 50 means is the dose or amount of a pesticide which can kill 50% of the test animals when eaten or absorbed through the skin. LD50 is expressed in milligrams of chemical per kilogram of body weight of the test animal (mg/kg). The lower the LD50 the more acutely toxic the chemical.
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Today's Featured Article - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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