McFarmer is correct---the FSA does a lot of the disaster claims work for the government such as administer disaster loans for farmers during drought etc. They administer the various USDA Farm Bill programs such as government farm payments, CRP signups and a host of others. The FSA also has a lending component which oversees operating and capital loans to beginning and distressed farmers. In the banking parlance we referred to them as "lenders of last resort"; if the local bank turned him down ( typically in my area the FSA required that a farmer present 2 turn-down letters prior to application with FSA) then the FSA lenders would determine whether they could lend to the farmer. The FSA folks are often overworked and understaffed but if treated courteously most of them can be quite helpful. As an ag banker I worked with them frequently.
The NRCS is the conservation component of the USDA--Soil Conservation Service--they work with farmers to ensure compliance with conservation aspects of the Farm Bill, do soil mapping (ie each county's "soil survey") which is a plethora of info on soil types, aerial photos of the county, etc. They administer cost-share programs such as CREP, and a lot of others, and will help a client (farmer/landowner) improve his property such as digging a farm pond, etc. They are generally low-key people with a lot of local knowledge of the soils and geography of a county. The thing to remember about these two organizations is that they are "boots on the ground" and can be informative about wildlife in general. For instance, in an earlier post I described my contact at the Chamberlain, SD with a nice FSA lady, Rachel, who took time to tell me what she knew/has heard about bird numbers locally--AND she gave me the phone number of the Pheasants Forever bird biologist who shares an office with her. If these people are not individually knowledgeable about pheasants specifically, most of the time they can put you in contact with someone who is.
These agencies are somewhat underutilized by the average hunter, I think.