bowman
Super Moderator
Use atrazine and crop oil now and 2-4D mid June
Got it, thanks!
Bullbuster
New Member
I do see your reply above Paul about it being risky to apply glypho now but is there a soil temperature threshhold below which spraying may still be safe? Wisconsin has been very cold & wet this spring!
Bullbuster
New Member
P.S. hoping to spray 1st/2nd year SG this weekend??
goatman
I hunt days ending in Y
Down here the switchgrass may be poking its head out so no Gly. Yours may be dormant yet.
Diaper Dale
New Member
Can I burn 3 year old switch now without killing it? It's green and about 4 to 6 inches tall. I'd like clean out some of the weeds, and I like to burn.
dbltree
Super Moderator
What should we see?
What should we expect to see from a frost seeded patch of switchgrass in SouthCentral Iowa at this point? The SG was frost seeded into a killed brome stubble. The cool seasons were sprayed again end of April. There is not a lot of weeds growing, but I don't see a lot of grass either. I guess I just need to be patient.
What should we expect to see from a frost seeded patch of switchgrass in SouthCentral Iowa at this point? The SG was frost seeded into a killed brome stubble. The cool seasons were sprayed again end of April. There is not a lot of weeds growing, but I don't see a lot of grass either. I guess I just need to be patient.
Daver
PMA Member
I am in about the same situation as you are, except I had 3 areas that were drilled and one that was frost seeded. My data is a week old now, but as of Memorial Day'ish, soil temps in S IA were in the 67 to 69 degree range. Switch doesn't really fly until about 70 degrees soil temp and mainly above that. As of last weekend, I could see any growth yet this year.
So, I think this late spring is still with us. I think things are running about 2-3 weeks behind schedule this year in terms of warm season grasses getting going. I suspect you are still in good shape and will see things growing finally in the next 10 days or so.
northcedar
Well-Known Member
My frost seeded maybe has a tiny amount of seedlings quarter to half inch tall, but basically bare yet. It may be a different grass for all I know. I'm patiently waiting, too. We've definitely had a lot of 80's and even some 90's recently. I'm along I-80 in IL.
vman
Active Member
Hey Paul,
I will have to go look at the stuff I frost seeded this year. It was beans last year and I had some thundermaster mixed in with the roundup I used last summer. Where I used that last year my fields are spotless now. Hopefully there isn't any residual affect on my switch. Course my corn looks good so I should be ok. Just thought about that after seeing this post.
Will have to go investigate this weekend.
I will have to go look at the stuff I frost seeded this year. It was beans last year and I had some thundermaster mixed in with the roundup I used last summer. Where I used that last year my fields are spotless now. Hopefully there isn't any residual affect on my switch. Course my corn looks good so I should be ok. Just thought about that after seeing this post.
Will have to go investigate this weekend.
dbltree
Super Moderator
medicsnoke
Member
Paul, will over seeding a little EW on the first year stand of switch effect the establishment in the long run?
dbltree
Super Moderator
If not to thick it should be fine
medicsnoke
Member
Good....I need some road screen bad! The bare ground on the roadway is killing me. I'm going to broadcast a little on the edges and roll it in with a roller. Its's extra seen, 3 years old so its worth a shot.
Is it too early to spray 2-4D? Tractor was out of service earlier this spring so I was unable to spray any Atrizine & now have lots of weeds. There appears to be some switch seedlings with more than 4 leaves, but I don't want to kill any if they are just sprouting or emerging. Thanks
If you wanted to be careful you could clip the weeds with mower this go around, next go around as the switch is a little more established you could hit with 2,4-d. Likely that's what I would if it were mine. I'm nervous about 2,4-d on younger plants - it's a harsh herbicide. So, could be done now but if it were mine, I'd go conservative, mow and do it when switch is more established.