Black grass sprays in forage maize

[Bob R]

What chemical options are people using to control black grass in forage maize?

Last year I used PDM pre-em and a nicosulfuron post em but poor results.

Would dual gold or wing -P alongside PDM be a more robust pre-em option for black grass ? I know they are not cheap!!

thanks

 

[Brisel]

Wing P and Dual Gold are mainly broad leafed weed killers. PDM and nicosulfuron are all you really have for blackgrass.

 

[Flatlander]

Wing P and Dual Gold are mainly broad leafed weed killers. PDM and nicosulfuron are all you really have for blackgrass.

Is atrazine banned now.

 

[Hindsight]

Maister. Though it to is an SU

 

[Hindsight]

Is atrazine banned now.

Yes. 15 years now I guess. Fond memories

 

[Danieljack1991]

Inter Row weeder & companion plants perhaps for better results against BG.

 

[deleted user 837354]

I wouldn't rely too heavily on nicosulfuron and maister when it comes to blackgrass in maize.

A good seed bed, the use of PDM and hope the maize outruns the stuff may be the eventual outcome. You'll need the PDM to stop most broadleaved weeds emerging so you can time the SU against the blackgrass emergence.

I often wondered if some mesotrione mixed with the PDM might help?

Dual-gold and wing-P as mentioned above are more for problem broad leaved weeds.

 

[Flat 10]

Mesotrione should help I think, different mode of action and activity in grassweeds from memory. Lots of BG about here and maize normally pretty free from it. Ideal chance for a stale seedbed.

 

[Brisel]

No grassweed activity on the Callisto label and no restrictions on grass species sown afterwards either so I'm not sure what it brings to the blackgrass party.

There used to be a flufenacet product approved on maize - Cadou Star. Is it still available?

 

[Flat 10]

No grassweed activity on the Callisto label and no restrictions on grass species sown afterwards either so I'm not sure what it brings to the blackgrass party.

There used to be a flufenacet product approved on maize - Cadou Star. Is it still available?

That’s embarrassing. I had thought amg was on it. Only used it on linseed.

 

[Brisel]

That’s embarrassing. I had thought amg was on it. Only used it on linseed.

Don't be worried. Mesotrione is a great broad leafed weed killer. I used to use it in dirty fields for linseed to buy time before coming back with the rather underwhelming Eagle follow up.

 

[Flat 10]

Don't be worried. Mesotrione is a great broad leafed weed killer. I used to use it in dirty fields for linseed to buy time before coming back with the rather underwhelming Eagle follow up.

You need to add some shield with the eagle even if few thistles.

 

[Brisel]

You need to add some shield with the eagle even if few thistles.

Agreed.

I use Choriste (nicosulfuron plus mesotrione) and add Shield clopyralid where we have thistles.

 

[deleted user 837354]

Agreed.

I use Choriste (nicosulfuron plus mesotrione) and add Shield clopyralid where we have thistles.

ThistleX works well in maize...

 

[deleted user 837354]

No grassweed activity on the Callisto label and no restrictions on grass species sown afterwards either so I'm not sure what it brings to the blackgrass party.

There used to be a flufenacet product approved on maize - Cadou Star. Is it still available?

Cripes, we are going back in time a bit now. I hadn't heard of Cadou star being used on maize for a while even before I gave up the job. It was a good product.

 

[Brisel]

ThistleX works well in maize...

I have little doubt of that, given the ingredients and formulation. Still technically illegal though!

I wonder how it's priced these days v Shield...

 

[deleted user 837354]

I have little doubt of that, given the ingredients and formulation. Still technically illegal though!

I wonder how it's priced these days v Shield...

I used shield a few times, it was murder expensive and I didn't think all that effective.

 

[Flat 10]

I used shield a few times, it was murder expensive and I didn't think all that effective.

You only need a whiff with an su

 

[deleted user 837354]

You only need a whiff with an su

It had more than a whiff of shield with an SU and I wasn't particularly impressed at all. Wondered if the SU at a full rate might have done the job.

 

[Brisel]

You only need a whiff with an su

Which SU? Nicosulfuron doesn't do thistles.