Simazine/ atrazine for switchgrass

[BlizzardofOzz]

I frost seeded some switchgrass this year and am preparing for weed prevention. Looking for recommendations on herbicide products and rates. I only planted about 1.75 acre. I know atrazine is restricted but is also available on amazon? It is also cheaper than Simazine. What is the most effective and economical way to go? Thanks!

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[mswaldo]

I used roundup and crop oil in the spring before the switch germinates. I did this the first 2 years and got a awesome stand growing after 2 years.

 

[Sligh1]

https://www.iowawhitetail.com/forum/threads/switchgrass.13575/page-80
got most info.
Can use simazine & atrazine interchangeably. I like atrazine better but splitting hairs. 2 sprayings with post & preemergents are almost always ideal. Quinclorac & methylated seed oil if foxtail & crabgrass get going. Mowing if weeds hit bad. If u got nasty weed bank waiting- 2 oz of plateau &/or light metolachlor around April to early may will help. I’d still nuke the site until late may with last bomb of Gly & atrazine/simazine. Wanna time last kill of weeds with pre emergents as close to germination as possible. Which generally switch is June & sometimes early July but I try for late may spraying to be safe.

 

[sirrloin]

We just burnt off a few acres of field grass this weekend. Do you think it's a little late still to plant switchgrass or just get it in before a good rain?