In Sri Lanka about 60;of the mature rubber consists of clone PB 86. The Rubber Research Institute of Sri Lanka recommends 1/2S d/2 tapping for this clone from the inception of tapping until intensification. However, this commonly adopted tapping system has the disadvantages of being a). tapper demanding and having high b). annual bark consumption rates c). tapping costs. With the objective of finding an alternative tapping system, 1/2S d/3 system to gather with stimulation was tested on clone PB 86. Different stimulant concentration and frequencies of stimulation applications were also tested to select the most economical method. Data gathered reveals that 4 rounds of stimulation per year with 2.5;Ethrel to give the most economical yields from 1/2S d/3 tapping system during the first year. 1/2S d/3 with stimulation {2.5;;ET, Ba 1.6 (2.5) 4/y} gave yields comparable to conventional 1/2S d/2 system. As comparable yields are obtained with a lesser number of tappings, the tapping costs and bark consumption rates are reduced. The incidence of TPD is comparable in both 1/2S d/2 and 1/2S d/3 with stimulation systems. Therefore, it could be concluded that 1/2S d/3 with stimulation tapping system may be adopted to over come the deficiencies of conventional 1/2S d/2 system.