I thought one problem with soapy water spray (though it is what
I have used in the past) is that it is bad for ladybirds and other insects as well as for aphids.
Its certainly non selective
Old-Chads-Orchard
Joined: 07 Dec 2005 Posts: 394 Location: Malpas, Cheshire
Posted: Tue Jul 07, 15 2:16 pm Post subject:
Well it seems my soap spraying has got rid of the worst of them Only sprayed the trees with evidence of bad infestation (some leaves were black with them) and they are pretty much all gone. Ladybird larva & soldier beetles dont seem to be bothered by a soapy shower Will just keep monitoring & spraying when needed for now. Just need a dry day to fruit grease the trunks now.
gregotyn
Joined: 24 Jun 2010 Posts: 2201 Location: Llanfyllin area
Posted: Fri Jul 10, 15 1:48 pm Post subject:
That is right Slim as the bugs build up so the predators build up but after them; eventually the predators build up to such a degree that there is little food about and so they die off too- which allows the bugs to build up again and subsequently the predators, sigmoid curves I think they call them
Old-Chads-Orchard
Joined: 07 Dec 2005 Posts: 394 Location: Malpas, Cheshire
Posted: Fri Jul 10, 15 2:47 pm Post subject:
found a couple of ladybirds mid larva-beetle stage, never seen that before, quite interesting to see, will keep an eye on the one I found, any ideas how log it takes to get to beetle stage?
Only sprayed the trees with evidence of bad infestation (some leaves were black with them) and they are pretty much all gone. Ladybird larva & soldier beetles dont seem to be bothered by a soapy shower 
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