My tomatoes are doing awesome this year! Taller than me and bearing loads of fruit. But recently I noticed that the leaves at some of the extremities are beginning to turn yellow, curl downwards and then go brown and crunchy. It only started a few weeks ago but looks like it has spread between plants. They are grown in medium to large pots with lots of sunlight and some wind keeping them at a good moisture level. I have also pruned the base leaves to increase airflow. Is it lack of soil nutrients, yellow leaf curl virus or something else? Thanks!
Tomato Leaves Browning
Certified GKH Gardening Expert
It makes sense that it took a few weeks to spread: this sounds like leaf curl -- and it's no surprise, depending on where you live, considering the extreme weather many areas are seeing this year.
This article may help you identify whether it is in fact definitely leaf curl, and gives instructions on what to do with the plants:
Check this article as well, just in case there's something other than the leaf curl virus going on: