Each one has given up on being able to resolve it on his own. Their frustration and resentment has led to petty and vindictive actions and reactions that make productive discussions unlikely. I know your area of expertise is in keeping the farm together for the next generation, but I'm desperate for a solution on how to divide this property now. We just don't know where to look to find the people who have the knowledge and understanding of farm situations to provide us with these services. It will probably not surprise you to hear that neither brother wants to spend one more nickel than is necessary.
Speed is important here because conflict between partners destroys business value.
Dissolution will require a mediator or attorneys and, unfortunately, it won't be cheap. Competent lawyers and mediators cost money. Appraisals cost money. Courts cost money. So do competent lawyers who work extensively with farms.