Tomato plant treatment?

[tumbling tom]

I have read online that as I have yellow spots on my tom leaves that they may be suffering from a magnesium deficiency and I should spray them for a week with magnedium.

Js this right? Also where would I get magnesium for toms?

[rustylady]

How old are your tomato plants, how big, and where are they growing?

[tumbling tom]

They are about 10 weeks old in gh. I potted them on into quite large pots last Sunday. I think they were slightly rootbound before. The plant itself looks healthy, just a few leaves.

I will upload a photo later when I am home

[Kleftiwallah]

In Geoff Hamilton's book "Gardener's World - Practical Gardening Course. I.S.B.N. 1-85613-365-6.

On page 17 there is a frightening set of photo's showing Boron, Manganese, Molybdenum,Calcium, Magnesium and Iron deficiencies. He says (if it is magnesium your plants are short of) "Use Magnesian (or Dolomitic) limestone. Cheers, Tony.

[Maccabee]

Can you upload a picture? Would help a bit If you've just potted them on they shouldn't be deficient in anything. If it is a magnesium deficiency i think Epsom Salts are quite a popular remedy, Google it ('fraid i don't know much about them or how to use them). From your description though i wouldn't have thought Mg deficiency, which usually manifests in a yellowing between the veins, not spots. I'm sure there was a thread up here just the other week with the poster asking the same thing and it turned out to be scorch or something.

[Potstubsdustbins]

TT post a pic then wait for advice before doing anything.

Colin

[tumbling tom]

there is an example of the leaves

The photo makes it look more"burnt" than anything, but the yellow is quite bright

[Currysniffa]

If my veg is needing magnesium I use Epsom-salts as stated above^ couple of big spoonful's works a treat my watering can.

[Potstubsdustbins]

That looks more like scorch/scald to me than anything. You say its just on a few leaves, if it is magnesium deficiency it will start on the lower leaves and then move upward. If this happens then spray with epsom salts as said above.

Colin

[Maccabee]

+1 for scorch. The rest of the plant seems fairly green. If you notice the plant is looking hungry in the future feeding with nettle tea will give them a boost of nitrogen of course but it's also a good source of Mg and iron. So quite a balanced fertiliser that will prevent some micro nutrient deficiencies.

[tumbling tom]

Whats the measuement of epsom salts to water?

[Florence Fennel]

Epsom Salts - Chris waters and Colin sprays - do both work? I've a couple of plants that look like they could do with it.

[Potstubsdustbins]

1/2oz to the pint is the recommended dose for spraying. Don't know if this changes for watering in.

Colin

[Florence Fennel]

Sorry Colin, is that half an ounce or one to two ounces?

[Potstubsdustbins]

A half ounce Auntie Flo.

Don't want them running to the loo now do wee.

Colin