The Congress finds that there exists special circumstances in certain agricultural areas which cause such areas to be at a disadvantage insofar as agricultural development is concerned, which circumstances include the following: (1) There is concentration of farm families on farms either too small or too unproductive or both; (2) such farm operators because of limited productivity are unable to make adjustments and investments required to establish profitable operations; (3) the productive capacity of the existing farm unit does not permit profitable employment of available labor; (4) because of limited resources, many of these farm families are not able to make full use of current extension programs designed for families operating economic units nor are extension facilities adequate to provide the assistance needed to produce desirable results.