Bruchid timing in beans

[czechmate]

So my first go at winter beans, occasional ones starting to flower. What is the best timing for insecticide use please. Regarding actual time, i like bees so intend to actually spray at night.

 

[moretimeforgolf]

So my first go at winter beans, occasional ones starting to flower. What is the best timing for insecticide use please. Regarding actual time, i like bees so intend to actually spray at night.

Don’t bother. You’ll only end killing your beneficials and still end up with holes in the beans. Winter beans are really only for feed anyway.

 

[Brisel]

Timing is everything. I've never seen any pheromone traps for bruchid. I've left plots untreated and seen no difference. Sorry.

 

[cricketandcrops]

So my first go at winter beans, occasional ones starting to flower. What is the best timing for insecticide use please. Regarding actual time, i like bees so intend to actually spray at night.

Need warm calm weather, 2 days at 20oC or more for them to be active. Spring Beans this is often end of June/July.....certainly not that her today, 8 miles from east coast its about 3 degrees and anything flying would be in Wales before in touched down on any crop.
Winter beans rarely an issue as flower and pot earlier than springs

 

[Bogweevil]

Perhaps OP means pea and bean weevil, leaf notching has started in SE, so maybe more advanced in France, but with warmer weather around the corner the crop might outrun them before treatment needed.

 

[czechmate]

Thanks for the replies.
I will be milling for my own feed, so not worried about sale quality.
I am more thinking about those saved for seed, although there is a thread running which seems to say the holes are not a problem.
Or I could find some kids to sort out some intact ones

 

[czechmate]

Perhaps OP means pea and bean weevil, leaf notching has started in SE, so maybe more advanced in France, but with warmer weather around the corner the crop might outrun them before treatment needed.

Yes, there is some of that too...

 

[Flat 10]

I’m in the don’t bother camp

 

[Zippy768]

Just to resurrect this thread
Bruchid beetle are about in our Spring Beans. 1st time grower.
Obviously it is well above 20°c. Agro I think is keen to apply. Weather changing again after tomorrow and wouldn't apply until tomorrow morn anyhoo. So was gonna wait and see again next week.
Thoughts anyone? Bother? Don't?

 

[Flat 10]

Don’t bother

 

[Clive]

So my first go at winter beans, occasional ones starting to flower. What is the best timing for insecticide use please. Regarding actual time, i like bees so intend to actually spray at night.

Don’t bother - it’s pot luck and you will kill so many beneficials you will be paying back the debt on slug pellets and BYDV treatment for years

 

[yellow belly]

dont bother
i did a few years ago but when bruchid are about they are impossible to eliminate
a cold winter reduced them to very low numbers this was also combined with a reduction in bean growing
the use of beans for greening helped bruchid numbers increase and crashed the price of beans

if you feel you have to spray from the agronomists pressure
then for honey bee presavation this hot weather makes it near impossible as the honey bees will be out early and late
but also the bumble bees are designed to operate at low temperatures so when it is cooler they are out early
i have seen them over the crop at 5 am

the last few years the staining because of wet weather has made human consumption beans harder to produce any way

i am now pleased as i do not have to start at first light every day for a week

this year the bee farmer here says the bees are putting on a lot of weight of honey which is a good sign for bean yields

 

[Banana Bar]

In my experience you are far better off avoiding human consumption beans. There is absolutely no effective way of controlling Bruchid beetle.

BB

 

[radar]

Listened to radio5 live "drive" prog this week and they were talking about the fact that if you put strawberries, for example, in a salt water solution a grub will crawl out in the majority of berries. The same happens with majority of fruit, blackberries etc. As the majority of people will quite happily munch on strawberries and not realise, don't see what the problem with bruccid is.
I also didn't realise that most beans have bruccid in them and it is only when they emerge that the hole appears.
Last year I sold 2 loads early and went for human consumption no problem - sold another 6 weeks later and rejected as full of holes! So waste of time spraying.

 

[czechmate]

Listened to radio5 live "drive" prog this week and they were talking about the fact that if you put strawberries, for example, in a salt water solution a grub will crawl out in the majority of berries. The same happens with majority of fruit, blackberries etc. As the majority of people will quite happily munch on strawberries and not realise, don't see what the problem with bruccid is.
I also didn't realise that most beans have bruccid in them and it is only when they emerge that the hole appears.
Last year I sold 2 loads early and went for human consumption no problem - sold another 6 weeks later and rejected as full of holes! So waste of time spraying.

The reason for the question was my experience with peas 3 years ago.
It was a small patch and the pile was in the corner of the store, they were fine when we put them there. About 6 weeks later the were an absolute mass of beetles. So much so, you couldn’t actually see the peas!
I did spray my beans (at night) but crikey, it was about 6 weeks ago. I think I will be cutting them in about 3 weeks.

 

[Barleymow]

In my experience you are far better off avoiding human consumption beans. There is absolutely no effective way of controlling Bruchid beetle.

BB

I grow winter beans some years they make human consumption, some years they dont .Last years did not a hole in any no idea why previous years full of holes

 

[yellow belly]

The problem with the holes is that the buyers do not like to see hiles in the beans when they buy them
if they are processed there is less problem
staining is as big an issue