I agree that mulch would help. The soil looks parched.
I use T-tape. You can leave it atop the mulch and it drips
at 9 inch intervals. Placed in rows 9 inches apart.
(Works for all veggies once they are up and growing good,
ie for carrots as well as tomatoes) Only draw back to T-tape
would be that gophers and Squirrels chew on it. It's easy
to replace if it's damaged and not very expensive.
Good luck with those.
