Pictures might help. A common cause of yellow plants is a nitrogen deficiency.

ZM

The presence of moles (if that is what they are) would indicate that the soil has ample amounts of organic matter which earthworms are digesting and that is why the moles. However they soil being heaved up could also indicate the presence of Voles (field mice) that would eat the plants roots which would cause the plants to die.
While some people always think that any time a plants leaves turn yellow (chlorosis) it is due to low Nitrogen levels there are really many reasons why chlorsis does happen. Soil pH, low levels of N, K, Z, Fe, and several other micro nutrients, and the only way to know about that is with a good, reliable soil test. Contact your local office of your Virginia Tech. USDA Cooperative Extension Service about having that done, if its not voles.

Here is a link that might be useful: Virginia CES offices