Rubbish Wheat after Naked Oats?

DrWazzock

Member
Location
Lincolnshire
I have some spring barley following spring oats that does look inexplicably poor in places. We baled the oat straw and drilled stubble turnips but many volunteer oats grew and left a straw mat by spring time, trodden down by the sheep. We paraplowed and drilled the barley with the Undrill. The same Spring barley following wheat and turnips looks much better so I would assume the oat straw does have an allopathic effect. It was all limed on the stubbles before the turnips were drilled and the pH is OK.
 
so how would you avoid the problem in the OP from happening again. I see similar issues whenever grow a second cereal.
more cultivation, more baling??
 
Oat chaff is very toxic to other crops and under some circumstances can do what you are seeing there. If the chaff is toxic naked oats must be twice as bad but it not always shows as this thread tells, its probably to do with the temp and amount of moisture.
 

jack6480

Member
Location
south lancs!
I have a field of wheat with a similar problem but after spring barley, I ploughed down tall and thick spring barley volunteers and drilled wheat mid October and it looks awful! This same field 2 years before had wheat on and did really well.

I have put it down to volunteers altering the ph of the soil. As indices high and fert has been the same as other wheat fields.
 
Op could be bydv from aphids that crawled off the oats onto the wheat
I have similar from where we had a late spring oat crop not a lot of straw
But a lot of volunteers sprayed of after drilling

Traditionally bydv (before early drilling was the norm )was the result of aphids walking onto later drilled crops into late ploughed grassy stubbles
Later drilling is a low bydv risk unless the stubble is grassy or grass ploughed

In future after oats we will spray volunteers early to counter the first migration of aphids
Drilling wheat after break crops with rape volunteers does not harbour bydv aphids
 

ajd132

Member
Location
Suffolk
We drilled wheat into stripper header harvested spring oats and whilst not being a prize winning crop it is reasonably good. The oat volunteers were also massive and I think this did transfer some bydv over so next time will spray them a few weeks before. Also seems to be abit less blackgrass (still too much in places).
I think leaving the long oat straw on the surface and slotting the seed into clean soil with a disc drilled may have mitigated some of the problems some have mentioned but it was a very easy season to do this sort of thing. It will probably be a disaster this year!
It certainly raises a few eyebrows!
 

Daniel

Member
Time to hold my hands up here. I managed to confuse myself and having dug out the records from the previous tenant I find that this field was in fact spring barley last year!

It was latitude dressed but obviously the dry spring has been too much for it and the take-all has loved it.

I did dimly recall that we decided to follow a couple of fields of spring barley with wheat last autumn to get back into the rotation we wanted, a gamble which didn't pay off.

In my defence when I wrote the OP my son was a week old, any sane person would have been on paternity leave, not trying to apply a very late t2.
 

jack6480

Member
Location
south lancs!
Time to hold my hands up here. I managed to confuse myself and having dug out the records from the previous tenant I find that this field was in fact spring barley last year!

It was latitude dressed but obviously the dry spring has been too much for it and the take-all has loved it.

I did dimly recall that we decided to follow a couple of fields of spring barley with wheat last autumn to get back into the rotation we wanted, a gamble which didn't pay off.

In my defence when I wrote the OP my son was a week old, any sane person would have been on paternity leave, not trying to apply a very late t2.
Mine is I think is take all to, do you think the barley volunteers are the main culprit?
 

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