India is paying a heavy cost by not adopting the genetically modified crops in a big way and the farmers should be given opportunity to reap benefits of the technology like in case of BT cotton, experts with the global agri-research bodies ISAAA and ICRISAT have said. [...] The ISAAA chief said though the Bt crops seeds cost higher than the normal ones, the overall input cost involved in cultivating GM crops is less than the latter as it does not involve deep ploughing and use of expensive fertilisers.