[nilsatis1964]

My broccoli seedlings have discoloured spots and also holes in the middle of the leaves.  Any Ideas?

[DavidT]

Any chance of a pic or two? It could be slugs, scorch or flea beetle.

[prakash_mib]

I can rule out slugs as they nibble into the leaf rather than picking a spot. It is probably flea beatles (they are too much this year) or scorching.

[Stevens706]

Is there any solution for flee beetle now we carn't use derris powder?

[oldcow]

Here's an excellent article about organic control of flea beetle:
http://attra.ncat.org/attra-pub/fleabeetle.html
 

[Stevens706]

Oldcow great link thanks. Looks like a batch of garlic spray is needed, found this recipe on the web for it.

Three large cloves of crushed garlic
1 tablespoon of vegetable oil
One teaspoon of liquid soap
One litre of water
Combine the garlic and vegetable oil and leave to soak overnight. Strain and add to the litre of water along with the liquid soap. Spray regularly. Garlic in known for its antifungal and antibacterial properties, but it is its insect repellent qualities that most gardeners admire.