Gurmukh Singh, 52, from Batala in Gurdaspur owns 12 acres of land of which he grows Mustard on four acres. An organic farmer, he saves seeds from his produce for each sowing cycle. Like his fellow farmers in Batala and many others from different parts of Punjab, Singh is miffed with the Centre. The rush to appraise and clear commercial cultivation of the genetically modified (GM) Mustard has brought him to Jantar Mantar in Delhi on Tuesday, to join hundreds from across the country who are demanding that there should be no commercial cultivation of GM Mustard.