Pollen Beetles 2019
- Thread starter Trying
- Start date
- Location
- Leicestershire
One word....... THRESHOLD!!
Leave them be
Trying
Member
Really the top buds are a really high percentage of yield. Look at these two pics. It’s not going to get any better.
Profit going quick. And there will be a continuous supply coming through day by day.
- Location
- Lincolnshire
Theres a good chance frost will stop those pollinating anyway, you need beetles to pollinate later on anyway.
Seriously ! People still spray for these things ?
They were not a problem 2018,2017,2016,2015,2014,2013.......... Need I go on ? So no idea why would they be a problem this year ?
Destroying benificials is why CSFB and slugs are an issue and making osr unviable for some and why you feel you “need” seed dressings like deter etc and multiple Bydv sprays to be able to grow wheat
Step away from the insecticide bottle please ! And spend the time your not driving the sprayer googling and reading about IPM
They were not a problem 2018,2017,2016,2015,2014,2013.......... Need I go on ? So no idea why would they be a problem this year ?
Destroying benificials is why CSFB and slugs are an issue and making osr unviable for some and why you feel you “need” seed dressings like deter etc and multiple Bydv sprays to be able to grow wheat
Step away from the insecticide bottle please ! And spend the time your not driving the sprayer googling and reading about IPM
- Location
- Dorset/Wilts
Best not to look at any crop, the weather is pants until at least next Friday. The little bettles will get blown away or drown
They turn into beneficials later on, if your that bothered then don’t grow it. You won’t beat nature
- Location
- the brecks norfolk
Your not up to threshold yet so done panic, at one of the osr breeders open days last year they told us that osr produces about 4 times as many flowers than are needed to produce yield so you can loose alot and not worry and once the crop starts flowering they'll be doing a wonderful job of pollinating the remaining flower.
Woooo flower power
hybrid vigour
Member
- Location
- Norfolk and National!
in rough terms:
for an average plant population of 40 plants:
for an average plant population of 40 plants:
- Each plant has 3000-4000 flower primordia
- 5-20% turn into fertile flower (optimum at about 300 flowers per plant)
- 40-60% of the flowers turn into pod with seeds
- There is a very high variation due to environment, but there is also a high potential to compensate
- Location
- S E Glos
As Clive so eloquently said, these aren't really a problem in the winter crop. In theory any backward areas of the field will be held back by a heavy infestation, but the difference made to such low potential areas by an expensive insecticide is unlikely to be cost-effective. Any decent areas of crop can take any number of these without detriment.
- Location
- the brecks norfolk
Not really, I'll reach for the Chem can no hesitation IF it's needed but the over use of Chems for the last 30-40 years has resulted in the mess were in now. If previous generations had thought a bit more about IPM/IFM our job now would be much more straight forward.
They better keep banning them then to keep them from your reach
- Location
- the brecks norfolk
Why.
I said "If it's needed" too many products have been abused by prophylactic use. Nothing wrong with using Chems, just only use them when it's necessary.
its not needed though is it
Robm 1959
Member
- Location
- West Sussex
Same here, hoping by the time the weather lets me get the sprayer out, it will have started to chuck flowers out and they won’t be an issue. I like it when the weather takes decisions like this out of my hands !!
Robm 1959
Member
- Location
- West Sussex
To be honest it’s getting close to knocking rape on the head as a break crop now, shame but can’t see it’s got much of a future now
- Tags
- agronomy insecticide