We are in 37 and found that they survive very well. The nests can be carefully removed and burnt. I read that they can live 7years in the soil! We have seen the nests all along the autoroute going north this month. A result of global warming unfortunately. No one seems to be able to eradicate them here and even if you clear your trees those in the neighbourhood will repopulate very quickly. The trees do recover though.
Yes Robert that’s not so far, I have never seen this sort of infestation though, thank goodness. You obviously are the expert so when you mentioned pets does this mean that these are poisonous to them? Yes I know I can google it, but when I have you to hand, so to speak, I am taking advantage !
Hi, no they have decended en masse from the pine tree. 3 months early. the fourth and final instar (moult) the caterpillars stop feeding, so I’m not sure how effective the bio treatment Foray 48b will be, but I also used a professional insecticide which seemed to have a good knock-down.
But as they have decended at the wrong time, hopefully the frost will get to them. It is unknown territory.
NH I’ve not heard about them living up to 7 years in the soil but will happily do some research.
Arial spraying along he autoroutes or forests by helicopter or aeropane was banned several years ago. The only alternative is a quad mouted machine or a otorised back pack sprayer, I have the latter but walking the length of the A71 doesn’t appeal!
Not heard of them survving several years in the soil, but anything is possible nowadays.
I have just received news that Foray 48b will be banned in France from 1 May 2018. It distribution via helicopter was banned in 2014. Here’s the new kid on the block.
Comme nous le craignions, le produit FORAY48B n’a plus d’AMM biocide ; sur demande nous pourrons vous le proposer avec AMM phyto ou choisir le CONSERVE qui a un plus large spectre et utilisable en BIO.(Fiche Technique ci-joint)
Vous pouvez utiliser le FORAY48B amm biocide jusqu’au 1er mai 2018 (délai légal fin d’utilisation 6 mois après arrêt distribution)
News update Foray 48b will no longer be available from 1 May 2018, although I can still use it up to the end of the year. It is too late to treat chenilles processionnaires with chemicals for this season as the caterpillars have stopped eating the needles and are getting ready to descend. It can be used to treat chenilles de pyrale du buis; First treatment should be effected March/April.
2017 was particularly warm and favourable for the chenilles and there are a lot out there. Below is a map of infested areas of chenilles processionnaire.
I have struck a deal with the manufacturers of the écopiège and am an official distributor of them. If you would like more information, please contact me!
I’m thinking of doing a “Grand Tour” Limousin, Dordogne, Auvergne, Bourgoyne regarding cluster flies, woodworm, pyrale du buis in Early April, ideal time for all 3. I will arrange multiple visits in the same area which will keep travelling costs down, so 'ave a word with your neighbours!