I am wondering about the value of applying Roundup herbicide to a
mixture of grasses and broadleaf weeds in a block of apple orchard
that is very dry....some weeds show wilt. The Roundup label
(WeatherMax) indicates that addition of ammonium sulfate "...may
increase the performance
of the product, particularly under....drought conditions... on annual
and perennial weeds."
I typically include a liquid ammonium sulfate product
"Choice Weather Master" with glyphosate, but have avoided application
when soils
are very dry, thinking it would be wasted expense. Would anyone care
to comment on experience with glyphosate applied during drought?
David Kollas
Kollas Orchard
Tolland, CT
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