TMV or No?

[coolbythecoast]

I have been reading that TMV infection is rare, perhaps even more rare among us amateur growers. I am posting a pic of one of my tomato leaves, several of my plants have rather suddenly come down with this symptom. If not TMV, then what? I do not see the kind of shoestring leaves that are common with CMV.

Particulars are:

Grown in screen room, have a few whitefly and fungus gnat. Spraying with Pyrethrin to eliminate. Symptoms appeared some time after first spraying. Also using Gnatrol bio control, but can't imagine that this would cause symptoms.

Soil is pine bark fines, peat and perlite. Lilly Miller 5-10-10 added while mixing. Last season I added hydro-tomato fertilizer after 1 month or so, but none so far this year.

Approximately 5% of plants presently exhibiting symptoms.

Have grown 1 yr previous with all particulars identical. Had perhaps 20% of plants exhibiting same symptoms by mid-season. Removed all plants upon discovery and this year re-used only pots from plants asymptomatic. Sterilized pots with 20% chlorine bleach for 10-20 minutes.

So what do you think, too much fertilizer, too little? Effects of the Pyrethrin? Some contamination from the fines? Blisters and mottling seem to resemble TMV pictures I find on the web.

Ignore the date on the pic, my VCR flashes 12:00 as well (grin). And don't ask "What's a VCR?, it will really make me feel old!"


Thanks