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#1
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Brassica caterpillars control?
Our brassicas are being shredded by thousands of caterpillars what would be
the best, preferably natural, control to use? Cheers Sam |
#2
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Brassica caterpillars control?
On Sat, 7 Aug 2004 22:22:39 +0100, "Sam" wrote:
Our brassicas are being shredded by thousands of caterpillars what would be the best, preferably natural, control to use? Enviromesh/fleece. Of course, before you enclose the crops you'll need to ensure there are no remaining caterpillars or eggs. It's worth spending a bit of time to knock up a frame of some sort, as you'll need to lift the fleece to tend the crops and pick the slugs off. Regards, -- Stephen Howard - Woodwind repairs & period restorations http://www.shwoodwind.co.uk Emails to: showard{who is at}shwoodwind{dot}co{dot}uk |
#3
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Brassica caterpillars control?
"Sam" wrote:
Our brassicas are being shredded by thousands of caterpillars what would be the best, preferably natural, control to use? BT works well... it's a biological control that kills the cabbage looper caterpillar. Harmless to humans. Dunno brand names in the U.K., but look for "bacillus thuregensis." I use the wettable powder form, which is really the spores of the disease that kills the worms. Coverings work well, if they're put in before the pretty white moths lay their eggs... Gary Woods AKA K2AHC- PGP key on request, or at home.earthlink.net/~garygarlic Zone 5/6 in upstate New York, 1420' elevation. NY WO G |
#4
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Brassica caterpillars control?
"Gary" wrote in message ... "Sam" wrote: Our brassicas are being shredded by thousands of caterpillars what would be the best, preferably natural, control to use? BT works well... it's a biological control that kills the cabbage looper caterpillar. Harmless to humans. Dunno brand names in the U.K., but look for "bacillus thuregensis." I use the wettable powder form, which is really the spores of the disease that kills the worms. Coverings work well, if they're put in before the pretty white moths lay their eggs... I very much doubt these would be cabbage looper caterpillars, the cabbage white caterpillars here in the UK arent 'looper' types and they arent moths they are butterflies. -- Tumbleweed email replies not necessary but to contact use; tumbleweednews at hotmail dot com |
#5
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Brassica caterpillars control?
On Sun, 8 Aug 2004 07:35:13 +0100, "Tumbleweed"
wrote: I very much doubt these would be cabbage looper caterpillars, the cabbage white caterpillars here in the UK arent 'looper' types and they arent moths they are butterflies. Right, but BT works just as well. It is effective against all lepidopterans afaik. For the OP, you're too late for covering to work and probably too late for BT so it's time to deploy the finger and thumb technique. Tedious and messy but works every time. If you start 'caterpillar patrols' soon enough you can get the young caterpillars of the large white soon after the eggs hatch - at that stage they're tiny and all still close together so your thumb squashes the lot all in one go. That way it's not a very onerous task and is very effective - we do it one quite a large scale here. ================================================= Rod Weed my email address to reply. http://website.lineone.net/~rodcraddock/index.html |
#6
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Brassica caterpillars control?
"Gary" wrote in message ... "Sam" wrote: Our brassicas are being shredded by thousands of caterpillars what would be the best, preferably natural, control to use? BT works well... it's a biological control that kills the cabbage looper caterpillar. Harmless to humans. Dunno brand names in the U.K., but look for "bacillus thuregensis." I use the wettable powder form, which is really the spores of the disease that kills the worms. Coverings work well, if they're put in before the pretty white moths lay their eggs... Gary Woods AKA K2AHC- PGP key on request, or at home.earthlink.net/~garygarlic Zone 5/6 in upstate New York, 1420' elevation. NY WO G ********* Yup! - BT works very well, - I should know, I worked for them for 38 years and left just as the glass fibre cables were installed and the big telephone buldings became redundant along with all the Techs and a small suitcase did it all and they were all fail-safe so lots of profit was made and the prices lifted yet again so my shares cleared the remaining mortgage, and I had enough left to get a nice Rover and build a 8x10 greenhouse. As far as the Great White Flutterbys are concerned it is my experience that there is one way and one way only to reach a point where you can have cabbage on your dinner plate. There is no escape, specially if the attack is virulent, and that one way is to go out each morning, and, - lifting every leaf of every cabbage, and grasping each offending green crawler between the thumb and forefinger of the right hand and squeeze each little bu---er into two pieces. (Ladies are permitted to use rubber yellow washing-up gloves, but using swear words is taboo) A few years ago I passed a big field of caulies and cabbages, and hovering over them was a massive cloud of millions of White flutterby's, next day I passed again and all there was left was a field full of green stumps. BTW 1, This year the toads and frogs have deserted my pond, - probably they've fallen foul gradually as time passed and been scoffed at the crack of dawn by the blackbirds and crows. I noticed that snail and slog slime was all over my concrete paths. BTW 2. Later, :- I've just been out with a torch and coal shovel and collected 8 big brown slugs plus 6 snails , all crawling on the wet concrete paths. I was very kind to them; instead of suffering my big clodhoppers they are now enjoying the lush weeds and window-height couch grass in the 'N.'s from Hell's wasteland next door. Oh! I forgot! - there was one medium sized frog on the path as well, so they haven't all deserted their domiciliary edifice. Doug. |
#8
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Brassica caterpillars control?
In the end I sprayed with Doff brand pyrethrum based spray. Next day all
there seemed to be was dead caterpillars. I expect some have escaped but the infestation seems to be broken. Cheers all Sam |
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