Tractor Boy
Member
- Location
- Suffolk
Why hallmark then? You have just slaughtered any beneficials for no reason haven't you?
OBM
- Thread starter tw15
- Start date
As that is what our agronomist says , for some form of midge control . I can't remember what he said , it is the first time we have used a blanket application of pesticide in the T3 .
Where I found the the 6 OWBM was in a low sheltered part of the field not far from a river , so you could say 'in a hotspot' .
Where I found the the 6 OWBM was in a low sheltered part of the field not far from a river , so you could say 'in a hotspot' .
Tractor Boy
Member
- Location
- Suffolk
6 in a spiders web isn't that many though, spray threshold is 6 in every ear.
- Location
- Leicestershire
Threshold is 1 per six ears seed and milling. 1 per 3 for feed. Agree RE beneficials. Only spray if absolutely necessary!
Hindsight
Member
- Location
- Lincolnshire
Glyphosate is in process of being banned while pyrethroids are left for all and sundry to slop around everywhere. Perverse world we live in. Hey ho.
Did he remember to tell you that now you need to leave a 5m buffer strip around all cereal fields with the hallmark? If it's flowering it's too late for OBM anyway and it seems pretty irresponsible to me to just to write a blanket recommendation for a pest with such a narrow window of potential to damage for a chemical that has an even narrower window to do any good against it.
Saw a few flying last night but nowhere near threshold. We only have 2 vulnerable fields one of which has just about passed the vulnerable stage.
Last edited:
Tractor Boy
Member
- Location
- Suffolk
QUOTE="Woodlander, post: 2562720, member: 1516"]Threshold is 1 per six ears seed and milling. 1 per 3 for feed. Agree RE beneficials. Only spray if absolutely necessary![/QUOTE]
Oops I knew it was something to do with 6. Got it the wrong way round though. Thought it was 6 per ear not one every six ears.
Oops I knew it was something to do with 6. Got it the wrong way round though. Thought it was 6 per ear not one every six ears.
what variety are you growing ?
timing and product choice both questionable form what you describe - I would be asking some more questions of the agronomist
Every year I've not put pyrthroid in T3, have had to return 3 weeks later with a bigger dose to kill aphids.
shakerator
Member
- Location
- LINCS
does pirimicarb do obm?
We are growing Gallant , crusoe , evolution , sandiago , reflection and keilder . I think only gallant is not owbm resistant
Wow, every year? In 19 years of spraying I can't recall ever spraying for aphids on wheat in ear.
No. It's aphid specific. http://www.syngenta.com/global/corp...op-protection/insecticides/Pages/pirimor.aspx
- Location
- S E Glos
Ditto, I can only talk trials fields but the last time we had to spray for aphids in wheat ears was 96 or 97.
- Location
- Bedfordshire
We wonder why we are coming under increased pressure from the powers that be about our pesticide usage, and yet we chuck a pyrethroid on our wheat, just for luck and destroy all the beneficials. I really would like to know the agronomists reasoning @faircomment . Irresponsible use of insecticide if it was added because you were going through with T3 and found 6 OWBM in a hotspot.
I believe the blanket hallmark was for aphid control as Neddy Flanders has found . It is just the first year we have done it
you have sprayed some resistant varieties there, why ? - your agronomist needs a rocket IMO - he's wasting your money and killing beneficials
- Location
- Bedfordshire
Been spraying wheat for 23 years now, think ive sprayed for aphids three or four times and never a blanket spray, field by field only. Are you on serviced agronomy or an independent, either way still bad practice in my opinion.
- Location
- Bury St Edmunds
Totally irresponsible application, I'll bet that Gallant is beyond risk and the last 3 are resistant. Who advised you to do that, they need sacking and I would not hesitate to do it. That kind of prophylactic treatment make my wee boil.
BB