This is the first automated-sprinkler system problem we've had since buying our house 4 years ago. I'm looking for opinions on how difficult it might be for someone with average household repair skills, like myself, to fix, or if a professional should be hired.

One day I heard water running outside and the sprinklers we not on. After checking around I found a puddle around the the area where the sprinkler plumbing was hiding. I say hiding because there were 5 deeply rooted plants an about 8" of dirt surrounding the pipes and no shut-off valve.

I had a plumber install a shut-off for the sprinkler and then removed the plants, roots and dirt. The attached photos so the portion of pipe that is leaking, along with an overall view.

Thanks in advance for any advice.