Whats up with my W Barley??
- Thread starter Shutesy
- Start date
Zebbedee
Member
- Location
- Scotland in the best bit
Would a leaf tissue test tell you anything I wonder?
- Location
- the brecks norfolk
I've got a field of barley that's yellowed in places.
What I've worked out is that this field had quite a bit of volunteer barley growing behind the combine. I ploughed the green in and where it was thickest is where the barley is the most yellow from about with the drone, you can clearly see every combine swath.
I think the combination of lack of moisture, less residual N because the greenery sucked it all up and pdm,dff and ffct on light sandy land is the cause.
I'm going through asap with a good slug of MN and may even chuck in some headland complex NPK to try and perk it up before winter.
What I've worked out is that this field had quite a bit of volunteer barley growing behind the combine. I ploughed the green in and where it was thickest is where the barley is the most yellow from about with the drone, you can clearly see every combine swath.
I think the combination of lack of moisture, less residual N because the greenery sucked it all up and pdm,dff and ffct on light sandy land is the cause.
I'm going through asap with a good slug of MN and may even chuck in some headland complex NPK to try and perk it up before winter.
- Location
- Moreton-in-Marsh, Glos
Fairly certain it is lack of rain after your pre-em that is causing the problem.
We had the same here. But it seems to be getting through it now.
Even seen it on the wheat.
We had the same here. But it seems to be getting through it now.
Even seen it on the wheat.
It'd be interesting to see a soyl soil scan map of the field if it's been done.Few pale/yellowing patches appearing on the outside headland on 2 of my fields of KWS Orwell barley, some sort of semi circular, some more triangular. Sown approx 3/10/18, pre-em was 2-3 days later, nothing applied since. Previous crop was wheat that was chopped, field was disced and pressed prior to drilling and rolled after drilling. Not really to sure what it is, Agronomist is away for a week so thought I'd ask the collective wisdom on here
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- Location
- S E Glos
I've seen that many times over the years. Is there not a possibility of tannins from excessive leaf litter, giving toxic symptoms?
- Location
- Essex/Herts Border
That was my next course of action.
- Location
- Essex/Herts Border
Unfortunately we havent yet invested in Soyl's services though I would like to in the future.
ollie989898
Member
Spray it with manganese. Barley is a funny plant, until it has real roots it is often upset by the conditions and I dare say this autumn has not be ideal in some respects. It has barley-itis.
Look what you have there, patches under the trees, so you have both tree roots under there and the leaf litter falling in large amounts is bound to affect the soil chemistry.
Keep a close eye on it, it should grow away if the weather is clement, otherwise get out with some manganese and maybe a couple litres of magphos K. That will tide the plants over until they develop some proper root mass and fend for themselves.
Have seen similar in spring barley and winter barley many many times. Don't let it fester, you need the barley plants to be strong, root well and more importantly tiller nicely.
Look what you have there, patches under the trees, so you have both tree roots under there and the leaf litter falling in large amounts is bound to affect the soil chemistry.
Keep a close eye on it, it should grow away if the weather is clement, otherwise get out with some manganese and maybe a couple litres of magphos K. That will tide the plants over until they develop some proper root mass and fend for themselves.
Have seen similar in spring barley and winter barley many many times. Don't let it fester, you need the barley plants to be strong, root well and more importantly tiller nicely.
ollie989898
Member
Nah, you see it even where no autumn herbicide is applied and in spring barley, too.
shakerator
Member
- Location
- LINCS
Flutenacet and DFF are bleaching herbicides. Classic symptoms on my view. Furthermore the samples you have taken appear at only 2 leaves. There’s no way they germinated straight away given your drilling date. Looks like where the crop is lush it is tillering?
- Location
- Moreton-in-Marsh, Glos
I’ve also noticed it most on headlands especially where it is double drilled.
I’ve equally noticed it where the sprayer overlaps too.
ollie989898
Member
I have seen it more in unsprayed crops than not, particularly spring barley sown in really dry conditions. It is just barley being barley I think. Some kind of physiological stress response that manifests itself in bleaching and blanching. It is survivable but it can hold a crop up and I don't like to leave it too long, not when some goodies are so cheap.
dannewhouse
Member
- Location
- huddersfield
looks like a moisture problem I get it in an odd path or 2 randomly in a sandy field, I would suggest tree roots sapping moisture out of the soil, I get it as well near trees.
remember there is roughly equal above ground as below with a tree? and it could be any pattern under the ground.
also some of mine has been on barley with no pre em.
remember there is roughly equal above ground as below with a tree? and it could be any pattern under the ground.
also some of mine has been on barley with no pre em.
- Location
- Moreton-in-Marsh, Glos
Ours seems to have got through it all on its own now. Been shooting today and it looks a different crop from 2 weeks ago. Mind you it was frosty just before our last shoot and maybe it was that that was doing it. They have now toughened up and look a good colour again.
If we were still using IPU, this is what they would have needed before we applied any. Absolutely no Blackgrass. So ploughing plus 4l Crystal and 0.2 DFF, then Avadex seems to have done the trick. As soon as it gets cold enough for the Astrokerb on Rape, we can get that on, antifreeze the sprayer and put it away till the Spring.
CORK
Member
- Location
- East Cork, Ireland
Those lesions look like some kind of disease to me?
Almost like Septoria on wheat with the black spots (Pycnidia) in the lesion.
Almost like Septoria on wheat with the black spots (Pycnidia) in the lesion.
timmyboy
Member
- Location
- Bury St Edmunds
We had some winter barley like it too. I would guess flufenacet same as @shakerator says. It stood still until last weekend but now looks lush with new tillers.
- Location
- Buckinghamshire
Hindsight
Member
- Location
- Lincolnshire
Few pale/yellowing patches appearing on the outside headland on 2 of my fields of KWS Orwell barley, some sort of semi circular, some more triangular. Sown approx 3/10/18, pre-em was 2-3 days later, nothing applied since. Previous crop was wheat that was chopped, field was disced and pressed prior to drilling and rolled after drilling. Not really to sure what it is, Agronomist is away for a week so thought I'd ask the collective wisdom on here
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Crops picked up some Diflufenican. In my experience symptoms of leaf bleaching seem worse when crop is in dry conditions. New growth will not show bleaching but this time of year can take a few weeks to show green again.
If you can see the combine swaths I would check for frit fly although I don't think you can do anything for that