In the world's largest agro-ecological experiment, Andhra Pradesh wants to turn 80 lakh hectares of farmland natural or completely chemical free by 2027. Is it an unscientific leap into the unknown or our best bet against climate crisis. TR Vivek speaks to T Vijayakumar, the special chief secretary to Andhra government on natural farming, spearheading this project, on the natural farming movement. This conversation was part of Bengaluru-based Nudge Foundation's annual 'Charcha' conclave on rural development. For feedback write to [email protected]