Technical Abstract: Cynodon dactylon (L.) Pers. (common bermudagrass) is a troublesome perennial grass common in the southeastern U. S. and extremely difficult to control in organic crop production systems. Research trials in a site heavily infested with C. dactylon were conducted from 2008 to 2010 to evaluate systems of perennial weed control during fallow organic transition. Treatments evaluated were all possible combinations of two primary tillage implements (power spader, disk harrow), summer weed control (solarization, fallow tillage with a peanut digger, and non-treated control), and winter tillage (fallow tillage with a peanut digger and non-tilled control). Weed control parameters were measured the following spring, ten months after trial initiation. C. dactylon densities were reduced by combinations of summer solarization or summer tillage with a peanut digger, followed by winter tillage with a peanut digger. The peanut digger displaced C. dactylon and exposed the vegetative material to desiccation. However, control was not sufficient enough to prevent re-infestation by survivors. Primary tillage with a power spader reduced Cyperus spp. tuber densities compared to the disk harrow. These results indicate that an integrated system of summer solarization or summer tillage with a peanut digger, followed by winter tillage with a peanut digger reduce densities of C. dactylon. However, using systems of this type for only one season are not effective and the weed will repopulate.