Time delay after roundup before drilling grass seed

[deere 6600]

What do you think

 

[Pistonbroke]

Moore have videos where they have drilled the grass seed and sprayed a few days after,so the seeds germinate before the acidity builds up

 

[ISCO]

We've sown then rounduped no problem. As long as seed not germinated.

 

[Limcrazy]

5 days after sowing.

 

[Bury the Trash]

What do you think

What (description) are you spraying off ? Theres a big difference between a bit of weed here and there and the other extreme of old grassland/ turf....

 

[deleted user 837354]

Depends on the weeds present. If its only tiny volunteers then read the label- product normally specifies 24-48 hours.

Have put roundup in with pre-emergence herbicides before so applied it after drilling and rolling, done it in many crops, certainly wheat and maize.

 

[deere 6600]

Depends on the weeds present. If its only tiny volunteers then read the label- product normally specifies 24-48 hours.

Have put roundup in with pre-emergence herbicides before so applied it after drilling and rolling, done it in many crops, certainly wheat and maize.
It's a field that was cut then grazed so not to much trash it's just that the time of year moving on its central scotland by the way so santa is on his on his way !!!!

 

[deere 6600]

Sorry see above joined on previous post

 

[steveR]

We've sown then rounduped no problem. As long as seed not germinated.

I am always twitchy with grass seeds and other seeds that are not actually buried, in case any Glyphosate lands on the seed and buggers up germination. Personally, I spray first...

 

[steveR]

Depends on the weeds present. If its only tiny volunteers then read the label- product normally specifies 24-48 hours.

Have put roundup in with pre-emergence herbicides before so applied it after drilling and rolling, done it in many crops, certainly wheat and maize.

Wheat and Maize are properly buried, so not at risk from any roundup hitting teh seeds.

 

[deleted user 837354]

Wheat and Maize are properly buried, so not at risk from any roundup hitting teh seeds.

I would not do it with grass seed.

 

[Mur Huwcun]

Moore have videos where they have drilled the grass seed and sprayed a few days after,so the seeds germinate before the acidity builds up

This, you have about three days to be safe

 

[steveR]

I would not do it with grass seed.

Agree, too much risk of active getting on seeds not buried

 

[deleted user 837354]

You generally don't want to be doing it in grass because of the likelihood of couch and other stuff escaping it.

You can get away with no roundup if you are certain the existing sward is not carrying a mix of nasty species and has a modest seed bank. In most other scenarios I would spray the ley off well ahead of time because of the risk of frit fly.

Spray it, wait at least 3 days (prefer a week) then apply slurry/muck. Plough or otherwise till after that. Leaving it dead or ploughed for a few weeks will encourage frit fly to find alternate homes.