Recently I grow some Roma tomato,When They were about one feet high,The top of the pant become scotch.I grow some melon and watermelon too they all have the same problem.Is this one kind of sickness?or too many N?Can't find any infomation from the internet.I grown tomato b4 but never encounter this kind of problem.
here is the photo.
[img][url=https://img77.imageshack.us/my.php?image=dsc0633vt6.jpg][img=https://img77.imageshack.us/img77/6919/dsc0633vt6.th.jpg][/url][/img]
Is this a kind of Virus?It happen to the watermelon too.I plant tomato b4 and never encounter this kind of problem.
I had one plant out of 25 do that this year too, at first I thought it wasn't getting enough water, but nope, and finally I removed it to avoid further problems.