BLACK FLY

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Compo
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BLACK FLY

Postby Compo » Fri Jun 05, 2020 11:38 am

Got blackfly on my runners. Thinking of trying horticultural soap as I have heard washing up liquid is no longer suitable as it does not have 'true' soap in it's ingredients?
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Re: BLACK FLY

Postby peter » Fri Jun 05, 2020 5:18 pm

It is the wetting agent that does the trick I think, breaks down the water's surface tension so it can drown the little darlings, detergent has that in spades.
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Compo
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Re: BLACK FLY

Postby Compo » Fri Jun 05, 2020 6:48 pm

Ok so ill try spraying some fairy liquid. Any idea of good water / detergent mix ratio?
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Cider Boys
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Re: BLACK FLY

Postby Cider Boys » Fri Jun 05, 2020 7:52 pm

I've had the blackfly on my broad beans for a fortnight or so and I have run out of chemical spray so am spraying with about 1 tablespoon of washing up liquid mixed in 1 litre of water. Have not checked my runner beans but they usually start on the broad beans then appear on the runners later so will have to have a look.

Good luck
Barney

ps Just looked out the window Compo and it's raining, at last.
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Compo
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Re: BLACK FLY

Postby Compo » Sat Jun 06, 2020 8:00 am

Hi Barney. One heavy shower last night. Ill inspect the beans later!!
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