OSR Damage

[robbie]

I was speaking to a neighbour a few weeks ago and he said he hadn't put any herb on his rape and didn't want to use astro kerb as he wanted the straw. Since then his crops look to have died, like the pics above. I assume he has sprayed so with the spray de waxing the leaf in combination with the snow and wind frosts we had it looks to have killed the crop.
I haven't looked to see if the growing point is still alive but it doesn't look like it'll recover from the road.

 

[teslacoils]

Is there a link with variety? I've seen some ace fields very close to some sad fields.

 

[Wombat]

Whenever mine has looked like the the pics it has been a write off. Takes too long for the clay to warm up then by the time it does all the local stuff is further on so every pigeon from 50miles attacks it

 

[Bax]

We had frost damage in the early 80s. It all came back fine. But didn't have flea beatle larvae and was a robust variety called Bienvenue.

 

[woodylane]

I was speaking to a neighbour a few weeks ago and he said he hadn't put any herb on his rape and didn't want to use astro kerb as he wanted the straw. Since then his crops look to have died, like the pics above. I assume he has sprayed so with the spray de waxing the leaf in combination with the snow and wind frosts we had it looks to have killed the crop.
I haven't looked to see if the growing point is still alive but it doesn't look like it'll recover from the road.

The field I posted a picture of earlier had only had an application of centurion max in September so he might not of sprayed it and still suffered damage. The growing point in the crop I look after was covered with snow which looks like it’s saved it.

 

[TheEarlOfMoray]

Ours didn’t look great after the last cold snap but last few days it has been approx 15c during the day and you can almost see it growing

 

[GeorgeK]

Well that's depressing. Drilled early August and flew away looked a treat. Still looks ok after the cold until you look for larvae and see every plant riddled with them. 115 acres reckon it's all toast. Never saw many beetles about either

 

[teslacoils]

Surely that's sounded the death knell for osr?

 

[GeorgeK]

Surely that's sounded the death knell for osr?

Sneaked a look at the neighbour's, drilled end of August. Just as bad. Doubtless there will be areas that remain unaffected for unknown reasons but I feel it's more luck than judgement, and it's surely just a matter of time until they are hit

 

[Green oak]

I had the same last year. Looked fantastic October. Went backwards late feb/March. 40tonnes of 200 acres. not growing it again. Locally rape is looking the same as mine did. This year.

 

[Flat 10]

Well that's depressing. Drilled early August and flew away looked a treat. Still looks ok after the cold until you look for larvae and see every plant riddled with them. 115 acres reckon it's all toast. Never saw many beetles about eitherView attachment 944645
View attachment 944646

To me that looks like the plants might be big enough to carry on and yield maybe towards a tonne an acre. I had some that looked much worse and that did 18cwt. Very difficult to judge from a photo though. All I put on mine was much reduced N and a sniff of proline and trace elements I think. Tried some the other year with no fungicide and regretted it

 

[Flat 10]

Ps given up with osr now though....

 

[GeorgeK]

To me that looks like the plants might be big enough to carry on and yield maybe towards a tonne an acre. I had some that looked much worse and that did 18cwt. Very difficult to judge from a photo though. All I put on mine was much reduced N and a sniff of proline and trace elements I think. Tried some the other year with no fungicide and regretted it

Thanks it helps to hear from someone with a similar experience. Having recovered from the initial disappointment of having to greatly downgrade my expectations I don't quite dare to be as optimistic as 1t/a but think overall it will be worth getting it to harvest and preserving the rotation. I will heed your fungicide advice.
As others have found there is much variation, with stronger plants on better soil far less burdened by larvae with less than 5 per plant. Wet/poorer areas have been hit much harder with around 20 larvae and I expect these patches to go backwards and die off over the coming weeks

 

[Hindsight]

Thanks it helps to hear from someone with a similar experience. Having recovered from the initial disappointment of having to greatly downgrade my expectations I don't quite dare to be as optimistic as 1t/a but think overall it will be worth getting it to harvest and preserving the rotation. I will heed your fungicide advice.
As others have found there is much variation, with stronger plants on better soil far less burdened by larvae with less than 5 per plant. Wet/poorer areas have been hit much harder with around 20 larvae and I expect these patches to go backwards and die off over the coming weeks

The photo - was that the stem or a leaf petiole? Looked like a leaf petiole. What are the plants like in the stems.

 

[GeorgeK]

The photo - was that the stem or a leaf petiole? Looked like a leaf petiole. What are the plants like in the stems.

Yes it's a leaf, nothing in the stems yet which are fairly sturdy so should tolerate a few larvae. The worst leaves have been frosted and are dropping off but I suppose it's too much to hope the larvae will go with them

 

[Hindsight]

Yes it's a leaf, nothing in the stems yet which are fairly sturdy so should tolerate a few larvae. The worst leaves have been frosted and are dropping off but I suppose it's too much to hope the larvae will go with them

If they are in the leaf and not the stem crop is (should be) OK. I can show you plants where they are in the stem - plants dead. Rape is a lottery. Just a case of do fancy a go - at £400 tonne the odds a better than £275 tonne.

 

[Flat 10]

Thanks it helps to hear from someone with a similar experience. Having recovered from the initial disappointment of having to greatly downgrade my expectations I don't quite dare to be as optimistic as 1t/a but think overall it will be worth getting it to harvest and preserving the rotation. I will heed your fungicide advice.
As others have found there is much variation, with stronger plants on better soil far less burdened by larvae with less than 5 per plant. Wet/poorer areas have been hit much harder with around 20 larvae and I expect these patches to go backwards and die off over the coming weeks

Please don’t blame me if it goes wrong!! As you can see I clearly wasn’t very good at it as given up for the time being.

 

[GeorgeK]

This is WOSR in bird cover, drilled early May last year. It was badly attacked by CSFB and never flowered, you can see significant scarring from larvae on the stems. It overwintered and is motoring away now but for some reason no larvae in any of them. On top of that it had no slug pellets fert or sprays. My proper crop that's now suffering from larvae went into fallow, wish I'd drilled it early May

 

[Bobthebuilder]

Must be some extremely fat pigeons around
Has bangers on field but 46ac with woods all around it’s difficult to keep them off unless you sit there all day with the gun, only seem to have targeted half the field

 

[Brisel]

Must be some extremely fat pigeons around
Has bangers on field but 46ac with woods all around it’s difficult to keep them off unless you sit there all day with the gun, only seem to have targeted half the field

That will recover ok