More things to add:

• There is some kind of information or work that your potential customers could use. Moisture sensors in irrigated crops, tissue sampling, some very basic insect scouting, weed scouting, and other tasks can bring value to the farmer, as he doesn't have time to do that the way a paid man would. Be sure to get a good consulting or record program of some kind to track records on a computer. I highly recommend Field Recon for scouting, as it is the ONLY think out there worth using for that task. Come up with a program, offer the service, put a price on it, sell it, and get to work!
  
• Get involved with your state consultants group. They have provisional membership categories, I am sure. There are educational meetings available to attend, and the networking with others in the field that are passionate about a results oriented consulting program is good.
  
• Make yourself available to chemical and seed companies for some plot demos. They welcome the chance to place product in the field. Usually they will provide some product for your growers to use for free, and may even pay you to evaluate and provide results. Get to know the sales and tech reps.
• Seed company agronomists are some of the best to work with I have ever seen, at least as a general rule. I don't want to take anything away from chemical and fertility specialists, but the seed boys have to deal with plenty of everybody's problems. Get to know them.
• I sure like "buddying up" with another consultant or two. It is good to compare notes throughout the growing season, and exchange information. 
• If your state has any amount of intense commercial vegetable production, that is a good area to work in. I personally am more comfortable and happier being a row crop man, but there are some advantages to working vegetables! They are a high dollar input and return crop, so consulting fees are not quite as big to the grower. Another thing is they usually make FAST. We make cucumbers in forty days, for example, and I can get paid to do two crops a year.
  
• Be ready to offer soil sampling work! Get a good GIS program, Farm Works, SST, Ag Leader SMS, or Mapshots. This is another area where you definitely want to buddy up with somebody. Don't let anybody talk you into spending $2000 to $3000 on a GPS to pull soil samples with, either!
  
• Don't overlook irrigation. As energy costs rise, efficient irrigation is more critical.
  
• I mentioned above getting involved with Precision Ag consulting, whether with Auto Steer, Yield Monitors, or VRA work.