CarolC ... you would not be the best candidate to set up the test and I'm sure you would not want me to do it! It would have to be done by a third party. Who'd believe either one of us? ;o) Plus we're in two different countries.

Is that you TBPL? I don't see any reason why I couldn't be a good candidate for conducting a test that uses a rigid scientific model with detailed records and exact measurements. I can describe the model for you if you want.

Perhaps the results of the herbicide testing are available for examination?

I have no idea. It was the College Park campus. I worked there during the summer of 1979, I believe. The department head was Dr. Ron Ritter. I believe Roundup was one of the herbicides we were testing, but I'm not sure.

Here's a Google search with "university of maryland" herbicide "dr. ron ritter" as the search parameters.