permaculture

[Dieter Brand <diebrand@yahoo.com>]

That sounds like an interesting experiment.
   
  I grow my cabbages as transplants in a peat-based substrate in seed boxes.
  The cabbage moths like to lay their eggs into the loose substrate. This 
used 
  to result in losses of 50 or more percent. Now I submerge the lower part of 
the
  transplants for a couple of hours in a bucket full of water before 
planting. This 
  kills the maggots and has reduced the losses to zero.
   
  If you have loose and crumbly soil around your young cabbage plants, this 
may
  well be the reason for the problem. The solution could be to mulch heavily 
or to
  paste some wet clay onto the soil around the plants to deter the moths from 
  laying their eggs.
   
  Dieter Brand
  Portugal

Tracy Dee Cook <tracydeecook@yahoo.com> wrote:
  oops - meant to save that last email as a draft email and accidently sent 
it - arg

short story is I planted the cabbage by a knee high allium and the cabbage 
closest to the allium kept the cabbage moths at bay. the cabbage I had 
planted near to the oregono plant still attracted a moth 

might be a stretch for your rhutbagas - but I intercropping showed good 
results at my place

Also, This resource guide might be helpful for this question or others 
similar,
IPM Integrated Pest Management http://www.entomology.umn.edu/cues/

Includes bug pictures and info 

Take care and let us know how it goes!
Tracy
Tracy Dee Cook wrote: Hi, Andrew - I'm here in Minnesota too.

I tried an experiment last summer and had interesting /good results

I planted 3 cabbage just to see if the cabbage moths would come

Andrew French wrote: Does anybody have any experience with controlling 
cabbage maggots? I want to
grow Rutabagas in MN in zone 3b and evidently they are a problem there. I've
read that ladybeetles may help.

Andrew French
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This is the second use of flooding of a new planting to handle pest problems 
that I've run across this month. It looks like an interesting technique also 
to cut down on transplant shock. I'll be trying it on tomatoes and pumpkins 
this year. Also it will be interesting if the black appearance of water in 
the infrared translates into faster warming of the soil or gets more than 
offset by faster water evaporation.

On Tuesday 25 March 2008 03:49:45 am Dieter Brand wrote:
> That sounds like an interesting experiment.
>
>   I grow my cabbages as transplants in a peat-based substrate in seed
> boxes. The cabbage moths like to lay their eggs into the loose substrate.
> This used to result in losses of 50 or more percent. Now I submerge the
> lower part of the transplants for a couple of hours in a bucket full of
> water before planting. This kills the maggots and has reduced the losses to
> zero.
>
>   If you have loose and crumbly soil around your young cabbage plants, this
> may well be the reason for the problem. The solution could be to mulch
> heavily or to paste some wet clay onto the soil around the plants to deter
> the moths from laying their eggs.
>
>   Dieter Brand
>   Portugal
>

> Andrew French wrote: Does anybody have any experience with controlling
> cabbage maggots? I want to grow Rutabagas in MN in zone 3b and evidently
> they are a problem there. I've read that ladybeetles may help.
>
> Andrew French