Tomato plant disease?

[Muddypause]

My tomato plants aren't very big yet, but they seem to have some disease already.

Anybody know what it is, and what I should do about it? (Click on the thumbnails)

[flower]

oooh! two of mine look like that

I've quarantined them!
it doesn't look like blight.....more silver than brown. at first I thought some sort of miner bug was eating them because it lookes as though the inside of the leaf had been munched leaving behind the membrane.

for what it's worth, the two isolated plants are continuing to grow at a rate similar to the unaffected ones. I noticed the problem about three or four weeks ago. It was after a sudden change in the weather and I wondered if it might be some sort of windburn

I'd love to know what it is though.

[Muddypause]

I'm pretty certain it's not blight, and I don't think an insect is involved. I had it on one of my plants last year (it was growing in isolation).

This year it seems to be spreading to the other plants. I'll separate them. IIRC, the leaves eventually go yellow and wither.

Last year someone told me to simply remove the leaves, which resulted in a pretty manky looking plant. And at the moment, if I remove the leaves there won't be much else left.

[Wormella]

We have it on ours too - but we have a massive jungle of plants and no room to quantine anything

I've not noticed any differnce between the growth on the ones that have it and the ones that don't.

[ohareward]

Hi Muddy. I just looked up a gardening book on tomatoes.

Sun scald - Exposure to bright sunlight. - Do not remove too many old leaves at once.

Yellowing between veins beginning with lower leaves. - Magnesium deficiency. Can also be nitrogen and potash deficiency. -Apply Thrive

Leaves become yellow (mottled) and dehydrated in hot, dry weather especially in glass houses. Minute insects under leaves. - Mites. - It says to use Mite Killer or Mavrik. Not sure about the sprays.

I hope this helps.

Robin

[Wormella]

That would explain it - they are on a windowsill!

[Thurston Garden]

Mine are a bit like that too, but I was putting it down to them having used up all the feed in the compost. The flower buds had set and I did not want to pot them on at that stage. I gave them a weak feed and the perked up again.

I give them a weekly spray of liquid seaweed anyway, but they have been in the pots for about 6 weeks now so the compost must be knackered

I'm planting them out tomorrow though cos the flowers have opened

[Muddypause]

Thanks for your replies - despite my earlier comment, I actually think it might be blight, now, because me spuds are going down with it too. The brown spots are spreading and the leaves turning yellow.

Since tomatoes and potatoes are pretty much all I've got planted this year, that's not such good news.

[Millymollymandy]

That's tough but not surprising after all the rain in May. My french beans look like that too although I don't think they get blight!

I'm really glad I am not growing either spuds or tomatoes this year because of previous years' blight (during dry spells!!!).