Blw control in spring barley

[Bigjon44]

Evening all
Whats the best option for mayweed and ivy speedwell control in spring barley. Conditions very dry and barley stressed!!

 

[Brisel]

Metsulfuron methyl or CMPP. How big are the weeds? Anything else to consider in the tank mix? CMPP needs warmth and both need care on a stressed plant. I would guess that the weed is stressed too. Neither weed is a big problem to control, so be prepared to wait until conditions improve.

 

[Ugo79]

Metsulfuron methyl or CMPP. How big are the weeds? Anything else to consider in the tank mix? CMPP needs warmth and both need care on a stressed plant. I would guess that the weed is stressed too. Neither weed is a big problem to control, so be prepared to wait until conditions improve.

I don't think metsulfuron is up to the job on Ivy Leaved Speedwell (ILS). Most straight metsulfuron products are rated as 'resistant' for ILS (<65% control).

If the ILS populations are particularly high and you are concerned then use an SU product with thifensulfuron in the formulation e.g. Concert SX. These mixes get you into 'moderately susceptible' territory which should be enough given the rainfall and good growing conditions for the barley which should swamp out suppressed weeds like ILS.

 

[Brisel]

I looked up some other weed/product tables that agree with you on ILS.

 

[robbie]

For mayweed I'd use Thor (tribenuron) so I recon hiatus (tribenuron+thifensulfuron) would do the job.

 

[JLLM]

Anybody got any bright ideas for Corn Marigold?

 

[robbie]

oxytril cm used to be the kiddy for that but not anymore, metsulfuron should do it but I found oxytril Pepped it up.

 

[7800]

harmony M or ally max

 

[2wheels]

Anybody got any bright ideas for Corn Marigold?

lime? yes i know it will be too late for lime once the weeds are up but we found marigolds were only a problem in low ph situations.

 

[RmfJ]

Anybody got any bright ideas for Corn Marigold?

Vivendi

 

[Flat 10]

That might work. Bit added to a general BLW mix is good. Is that the product that has restrictions on the straw use following?

 

[RmfJ]

That might work. Bit added to a general BLW mix is good. Is that the product that has restrictions on the straw use following?

Yes it is, might be a problem with potatoes or legumes in the rotation.

 

[SilliamWhale]

Anybody got any bright ideas for Corn Marigold?

It's classed as an arable flower.

 

[JLLM]

It's classed as an arable flower.

Its classed as out of control in some places.

 

[Grass And Grain]

It's classed as an arable flower.

Think I get £517/ha to grow corn marigolds for stewardship .

 

[puma power]

@JLLM Corn Marigold is a pain in Pembs! 3/4 rate Ally and 3/4 rate Starene XL do a pretty good job. PDM in the Pre-em gives them a good head ache to start.