MUMBAI: To encourage wider participation from retail investors, stock exchange BSE on Friday said it will launch incentive scheme for trading members in non- competitive bidding of G-sec (government security) and T-bills (treasury bills) with effect from November 19.The scheme would be launched initially for six months and would be based on the total value collected and number of unique clients introduced by trading members in a month.BSE had launched non-competitive bidding in G-sec and T-bills from April 24 after taking necessary approvals from Sebi and RBI for collecting bids from retail investors.