My off-brand 41% glyphosate concentrate (aka Roundup) was sitting
outside since last year (I just found it, where I last left it).
Two quick questions:
1. Anyone have experience with roundup concentrate left in the sun
for a year? To give you a hint of the sun's power, that spray
container used to be bright yellow.
2. The label is gone.
Do you remember offhand the number of cups to gallons?
(I'll look it up, so the first question is more important.)
On Sunday, March 15, 2015 at 7:36:26 AM UTC-4, dadiOH wrote:
I would think it's fine too. I've kept a similar jug in a garage
year round for 10 years and it was still good. Garage easily gets
into the 90s during summer, down to around freezing in winter. I just
bought a new jug. In any case, it's easy to determine. If he mixes up
a tank, it either works or it doesn't.
On Sun, 15 Mar 2015 08:21:02 +0000, Danny D. wrote:
Did it ever freeze? That would be more important than sunlight. Although
it can lose its effectiveness when left in the sun too long.
2-3 oz/gal is a good rate to use. I spray it on a bi-weekly basis using
2.5 oz/gallon and it is very effective.
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