Winter Barley Herbicide

[daithi]

What herbicide do the agronamists on here recommend for w barley followed by forage rape. With products containing flufenacet and dff the label says to plough before establishing a brassica. Looking to control AMG and broad leafed weeds , some fumitory.
TIA

 

[snarling bee]

There are plenty including myself who put OSR in following autumn applied FFT + DFF with no issues, just like ploughing after Kerb.
The only issue is you will have no comeback on the manufacturer if the forage rape fails.

 

[daithi]

Do you plough to establish your OSR?
It's just that my forage rape doesn't look that great this year and I was wondering if it might be because of herbicide residue it could also be because of the awful weather.

 

[Flat 10]

Do you plough to establish your OSR?
It's just that my forage rape doesn't look that great this year and I was wondering if it might be because of herbicide residue it could also be because of the awful weather.

I think spring applied SUs are more likely to be a problem than winter residuals but may be wrong.

 

[Grass And Grain]

Can't help the OP with his question, but I deliberately used a rape safe herbicide on my spring barley. August sown rape looks cracking in that field - so much better than the field of rape I have after winter barley (when I didn't give any consideration to the herbicides I was using in the winter barley crop).

 

[deleted user 837354]

Would not bother me a jot but if it did the spring SUs would be the primary concern. Never had any significant issues establishing forage crops behind cereals and I have seen it done all ways, rake and roll, broadcast, min tilled and direct drilled. Weather, flea beetle and slugs are the greater issues.

 

[Gong Farmer]

What herbicide do the agronamists on here recommend for w barley followed by forage rape. With products containing flufenacet and dff the label says to plough before establishing a brassica. Looking to control AMG and broad leafed weeds , some fumitory.
TIA

If AMG is the only grass weed you wouldn't need more than half dose anyway, so even less risk.

 

[robbie]

So I've had a wander around my early October drilled barley and it's getting to that time when I'll have to go through with some MN and according to ahdb I'm now at T sum 170 so unless we get some really cold weather itll have a pyrethroid aswell.

I always do the autumn herb in the mix at this time of year. Normally just go with PDM and 100ml DFF but I'm wondering whether to try tower with the ctu in it. I seem to have a few too many blw which need tidying up in the spring when using PDM, In the days of ctu/ipu this wasnt a issue. I know the dose of ctu in tower is low but would it bring anything to the party????

The other option which NIAB was advocating for simple BLW and meadow grass post em control was to use a PDM/ picolinafen mix. I'd always dismissed them as being serviced leg lifter products but at a strategy meeting my regional agronomist seems to think itll do everything needed in my situation and is well priced.

Has anyone got any experience of these products???

 

[teslacoils]

Pdm picolinofen product last time I used it reminded me why I use stomp aqua.

#oompalumpa

Getting it out of the can taxed my patience.

 

[SilliamWhale]

I have lost OSR this year which has totally failed to germinate even after some light cultivation which I suspect was down to my use of spring SU in Winter Barley.

 

[Flat 10]

So I've had a wander around my early October drilled barley and it's getting to that time when I'll have to go through with some MN and according to ahdb I'm now at T sum 170 so unless we get some really cold weather itll have a pyrethroid aswell.

I always do the autumn herb in the mix at this time of year. Normally just go with PDM and 100ml DFF but I'm wondering whether to try tower with the ctu in it. I seem to have a few too many blw which need tidying up in the spring when using PDM, In the days of ctu/ipu this wasnt a issue. I know the dose of ctu in tower is low but would it bring anything to the party????

The other option which NIAB was advocating for simple BLW and meadow grass post em control was to use a PDM/ picolinafen mix. I'd always dismissed them as being serviced leg lifter products but at a strategy meeting my regional agronomist seems to think itll do everything needed in my situation and is well priced.

Has anyone got any experience of these products???

Will there be enough CTU to help with wild oats? If you are worried about BLW I would up DFF to 0.15 at least.

 

[robbie]

Will there be enough CTU to help with wild oats? If you are worried about BLW I would up DFF to 0.15 at least.

No there wouldn't, itll be spring facial for them. In the good old days ipu and dff would do the lot, oats included and was all the herbicide we used on winter barley.

Upping the dff would be but far the cheapest option but i still find that even then groundsel and mayweed slip through.

 

[deleted user 837354]

No there wouldn't, itll be spring facial for them. In the good old days ipu and dff would do the lot, oats included and was all the herbicide we used on winter barley.

Upping the dff would be but far the cheapest option but i still find that even then groundsel and mayweed slip through.

I wouldn't bother trying to rejig autumn pre-ems to sort broad leaved weeds unless they are getting that hefty in size/population that you are having to rush into the crop first thing in spring to remove them.

Cheaper/easier and more flexible to ferret them out in spring when they are growing a bit better and the field has shown you it's hand regarding what weeds you having coming.

The picolinafen does bring a bit more to the party in terms of BLW control in my experience but things like groundsel can slip through.

Reduce rate crystal- if you have no grass weed issues - used to be of comparable price to the combined PDM/Pico products and was more robust I found.

 

[robbie]

Groundsel and mayweed are the two which do seem to slip through the net.

 

[Hindsight]

No there wouldn't, itll be spring facial for them. In the good old days ipu and dff would do the lot, oats included and was all the herbicide we used on winter barley.

Upping the dff would be but far the cheapest option but i still find that even then groundsel and mayweed slip through.

Not surprising. PDM and DFF both quite weak on the Matricaria species - mayweeds and groundsel.

CTU and IPU strong on those weeds. Now have to use SU or florasulam.

If large in autumn from early sown cereal there is option of florasulam or tribenuron in autumn - abut £6ha depending on rate chosen. Or leave until spring.

 

[deleted user 837354]

I can't remember which hormone will fold groundsel up fast- very cheap, gentle on the crop and no fear of encouraging ALS resistance. Reduced rates usually enough to fold up what you are looking at very fast. That said used to use slalom at lot as got cleavers sorted too.