Are my tomatoes having magnesium deficiency?

[teh]

My Tomato plants are growing very well but all of a sudden some of the leaves are display symptoms as per pictures below. I checked online and is not magnesium deficiency could anyone guide me on this?

I am planting in 6 gallon container using vermicompost + sandy soil and temperature sometimes can reach 35 degrees here


[img]https://i358.photobucket.com/albums/oo22/toypassage/rps20120912_081804.jpg[/img]

[img]https://i358.photobucket.com/albums/oo22/toypassage/rps20120912_081822.jpg[/img]

[PunkRotten]

I don't know. What I your fertilizing schedule right now? If you don't fertilize it probably won't hurt to do it now. But make sure you don't overdo it.

[teh]

I don't know. What I your fertilizing schedule right now? If you don't fertilize it probably won't hurt to do it now. But make sure you don't overdo it.

Hi,

I only fertilize it once a week using fish emulsion+seaweed.

thanks

[suncitylinda]

It looks like leaf tip burn to me from something you are spraying, ferts? Fungicide? insecticide?

[CharlieBear]

Are you watering enough in the heat. I had some tomatoes do something similar when it was first hot in the spring (I had them under a poly tunnel at the time). They did seem to snap out of it. You might try rigging some shade for the hottest part of the day. Water in the early morning and not on the leaves. It could also be that the pot is too small and dries out too quickly, especially is wind is also a factor.
Chemical burn of coarse is always a possiblility