GANGTOK, 21 Nov: The concept of agro-biodiversity is considered to be most important for maintaining a healthy and strong regional food system which prompted the Krishi Vigyan Kendra, ICAR Sikkim Centre, East Sikkim, Ranipool to launch large scale potato cultivation programme in the quake stricken Nandok village of East Sikkim as an alternative paradigm for climate resilient crop production system, informs a press release.