Tuber are enlarged structures in some plant species used as storage organs for nutrients .The plant uses them for survival in the winter or dry months,to provide energy and nutrients for regrowth during the next growing season, and as a means of asexual reproduction. There are more than 40 plant species present in this plot .Common plant species with stem tubers include potato and yam. Root tubers include turmeric, ginger, sweet potato, cassava and dahlia.