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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That was my next course of action.Would a leaf tissue test tell you anything I wonder?
Unfortunately we havent yet invested in Soyl's services though I would like to in the future.It'd be interesting to see a soyl soil scan map of the field if it's been done.
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.
I’ve also noticed it most on headlands especially where it is double drilled.Nah, you see it even where no autumn herbicide is applied and in spring barley, too.
I’ve also noticed it most on headlands especially where it is double drilled.
I’ve equally noticed it where the sprayer overlaps too.
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.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.
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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If you can see the combine swaths I would check for frit fly although I don't think you can do anything for thatI'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.