One of the biggest issues with gas pipelines is getting the soil corrected after they did their work.
I actually have 5 seperate pipelines on one easement on my property. I was (key word) farming this pipeline (when it had 4 lines). We grew and harvested hay. The company came in and paid a hefty price to extend the easement and put in an additional line. Having a background in the excavation and construction side of things, I specifically asked to have the top soil put off to the side and then put back on after the work was done.
That did NOT get done. The resulting issue was clay that was mined from the bottom of the hole that ended up being put on the top after filling in said hole! This resulted in water issues, soil related issue... the list goes on and on. You CAN fix the soil, it just takes some time and effort. As Luv2hunteup mentioned, get the soil sample done and it will tell you what you are lacking.
Natural "green" fertilizer is a definate help. By green, I mean planting rye, oats, anything that will die off later on and provide nutrients to the soil.
I'm now growing gorn, sorghum, turnups, rape, clover, and alfalfa on the above mentioned abortion they created! I could tell stories but... I fixed the issue myself! It took careful planning, work, and TIME!