In Carbon by Indigo, you can add many fields to your account by uploading your shapefiles.
Here's how to request your shapefiles from the FSA:
You can look up and e-mail your county FSA office's Executive Director here: http://offices.sc.egov.usda.gov/locator/app?state=us&agency=fsa
Once you have your shapefiles, you'll need to create a .zip file to hold them.
You can then upload your .zip file to your Carbon by Indigo account. Not sure how? Check out our step-by-step guide on uploading files HERE.
Carbon by Indigo supports the following file formats:
Google Earth/ KML/KMZ (.kml, .kmz)
Here is an email template the grower can use to request the shapefiles from the FSA Director.