Spring Barley herbicide cost with blackgrass

[Laggard]

Belt and braces,
1250g/ha Pendimethalin, 120g/ha Flufenacet and 30g/ha Diflufenican = £35/ha
Avadex granules = £40/ha
TOTAL £75/ha

Not applying the Avadex is a big saving, what do others do in blackgrass fields?

 

[Gong Farmer]

I've seen several examples where the herbicides failed to control it so the crop was nearly put in the silage clamp, but wasn't and ended up with hardly any black-grass. Hence there is a considerable contribution from the crop itself but this can be compromised by heavy herbicide input which might check the crop. Delicate balancing act.

 

[teslacoils]

By early April, or once dry enough to drill, it's too dry for preem. Cheaper to drill more seed.

 

[ajd132]

Belt and braces,
1250g/ha Pendimethalin, 120g/ha Flufenacet and 30g/ha Diflufenican = £35/ha
Avadex granules = £40/ha
TOTAL £75/ha

Not applying the Avadex is a big saving, what do others do in blackgrass fields?

You don’t need those herbicides for spring barley. They don’t work when it goes dry and if it rains after the knock the competitiveness of the crop letting more BG in. We have used spring barley to clean up a massive BG problem and have never used them. Who is suggesting you do this?

 

[HarryB97]

Round up pre drilling and then high seed rates drilled with minimal disturbance from mid March-early April so it gets up and grows. Simple, cheap and affective.

 

[yellow belly]

Drill barley April after glyphosate
Avadex at drilling
wild oats and bg controlled well
save flufennacet for wheat crops

bad bg fields get tripple spring crops

 

[cricketandcrops]

Pre drilling glyphosate, 450 seeds minimum, up to 550 on bad fields, good seed bed and let it do its thing

 

[Brisel]

I’ve put the legal half rate Liberator and the legal half rate Crystal on a bad spring barley field infested with sterile brome. Always did 1/2 t/acre less yield than the others though no visible crop effect and rain after application to activate the herbicide. The higher seed rate and less herbicide would have been a better investment.

 

[Bignor Farmer]

I like avadex on spring barley, roll it in, very crop safe, nails your brome and wild oats, avoids splashing out Axial later on and it’s as good as you’re going to get on black grass.
I personally don’t think pendimethlin or half rate flufenacet adds much to bg control in Spring Barley and can really hit the crop if washed in. As said above, you want a vigorous crop above all else.
Bit of DFF for BLWs.

 

[Brisel]

Avadex does very little for bromes.

 

[Bignor Farmer]

Avadex does very little for bromes.

Does a decent job on my sterile brome if rolled into decent conditions, although I wouldn’t consider most of my land to be particularly dirty with brome. Certainly wouldn’t spend any more money stacking anything else on top.

 

[T Hectares]

5 years ago I was spending out on the full monty SB pre em, like many people I now do nothing with no ill effects and save £75/ha
Some Foxtrot for wild oats is the only graminicide spend now, soils warm too quickly for spring pre ems to work effectively and the half doses do nothing as stand alone treatments imho

 

[deleted user 837354]

The trouble with the OP's idea is that the up front cost is pretty stiff and spring barley, if sown late, you can struggle to get the yield out of it.

 

[Luke Cropwalker]

Just stick with the Avadex, very crop safe, drill a couple of weeks later if the blackgrass is very bad.

 

[deleted user 837354]

I would probably use avadex if it was a serious blackgrass area. Have used half rate liberator for AMG and broad leaved weeds on occasion, not silly money on it's own. Takes the pressure off for the first pass with fungicide etc as there will be less need to hunt BLWs out.

 

[snarling bee]

I haven't put a BG herbicide on any of my spring cereals for the last 2 years. But we are generally drilling after the 20th March.
We have a BG problem in many of these fields which is why they are in spring sown in the first place. 3 years min till spring barley with no herbicide sorts the problem.

 

[Flat 10]

I haven't put a BG herbicide on any of my spring cereals for the last 2 years. But we are generally drilling after the 20th March.
We have a BG problem in many of these fields which is why they are in spring sown in the first place. 3 years min till spring barley with no herbicide sorts the problem.

How much N are you using please.

 

[snarling bee]

As it was a high N contract, 155kg. ( we have got over 2% grain N the last 2 years)
For normal malting we would need to be well below 120.

 

[Brisel]

As it was a high N contract, 155kg. ( we have got over 2% grain N the last 2 years)
For normal malting we would need to be well below 120.

What do you mean by normal? 1.55 N? Normal for me was 1.85 for brewing and export.

 

[Flat 10]

What do you mean by normal? 1.55 N? Normal for me was 1.85 for brewing and export.

1.85 is the new normal?!