Spray-Grade AMS as a Lawn Fert?

sirvictory444 · Apr 21, 2021

My local supply has 51 lb bags of "Spray-Grade" Ammonium Sulfate for $10. The back says 99% purity. To be mixed with water for herbicide applications.
The granuals are very fine, but I've seen products the same size before.
The store marketed it as 21-0-0 fertilizer, which is or course the nitrogen makeup, but nowhere on the bag does the manufacturer say anything about using it that way.

So is AMS always just AMS, or could this be in some molecular makeup that's not usable as a spreader lawn fertilizer?

bernstem · Apr 21, 2021

You can use that as lawn fertilizer. It works really well when used as a sprayed spoon feeding application. Water in if using more than 0.15 lbs N/M to prevent leaf burn.

corneliani · Apr 21, 2021

For $10??!?!?! I'd buy one to use in any/all spray applications. Notice how they label it an adjuvant, which it can act as in solution.

I'm guessing this is an Ag/Feed store?

sirvictory444 · Apr 21, 2021

Can I use it in a Broadcast Spreader?
I have a 2 gallon sprayer and all sorts of teejet nozzles, but the amount of water required would take more than a dozen fill ups.

And yeah, $10. Urea 50lb was $18.

corneliani · Apr 21, 2021

If it's spray-grade it's too fine to go through a spreader, at least not evenly/consistently. I could be wrong though.

sirvictory444 · Apr 21, 2021

gm560 · Apr 21, 2021

I have done it but it doesnt flow real well through a spreader. A Scott's Whizz gives you more control, but you have a pretty big lawn so that might be prohibitive.

Spray-Grade AMS as a Lawn Fert?

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