Field Selection - very important. Beans do not tolerate wet soils. Saturated soils will stunt, delay maturity, or even kill the crop. Choose a relatively flat piece of land. Makes harvest easier since harvest equipment will follow ground contour.
Beans are also susceptible to sclerotina.
Fields with a recent history of sclerotina susceptible crops should be avoided. Field Rolling - should be completed prior to emergence. Once the beans have emerged rolling will knock off the cotyledon, killing the plant.