MU Extension has open applications for property owners to apply for 2021. COLUMBIA â The Backer family first broke ground in mid-Missouri in 1850. Now the family operates multiple pieces of land designated as a Century Farm by MU Extension. MU Extension has opened applications for property owners to apply for 2021. Century farms have the distinction of a plaque and a certificate, but one farmer says he also gets the pride of longevity. "We're grateful to be apart of something that is well thought of and has always been respected in the community," Harrison Backer said. To qualify, the same family must have owned their farm for 100 consecutive years. The current owner must be the children, grandchildren, siblings, nephews or nieces â including through marriage or adoption â of the original settler.