A couple of points on this one. As someone who uses these products on a daily basis DO NOT use measurements as imprecise as honey jars in a gallon of water. READ the label and do precisely as it says, buy yourself some form of measuring jug solely for the purpose, and use a proper sprayer with some form of low drift nozzle and the approved protective equipment.
I seem to remember reading a long time ago that there were problems with bees when they come into contact with the surfactant in Glyphosate, this breaks down surface tension in water and helps the solution stick to the foliage rather than run off in beads.
All of the above said, and I do use a far amount of Glyphosate based mixes at work, I don't use it around my own hives, just get a pair of shears out once in a while!
