This research aims to determine the cost, margin, profit share and rubber trading system in the District Rambang Kuang, South Sumatra. The research was conducted from June to August 2021 in the District Rambang Kuang, South Sumatra. Sampling is done by: (1) simple random method for farmers and (2) the snowball method for merchants. Analysis of the data using the formula and share margin trading system. The results showed that the first trading model was the marketing of rubber from farmers to collectors and then to factories. Meanwhile, the second trading system is where farmers sell rubber to retailers first, then to collectors then to factories. The largest marketing margin was shown by the trader collecting III, amounting to Rp 3.400/kg. The average marketing margin for all intermediate traders was Rp 3.333/kg. The marketing margin for retailers is Rp 1.900/kg. The average share received by farmers is 64,67 percent. The share that was received by the largest farmer was in the trading system model 1, amounting to 70,85 percent.
Arbi et al. (Wed,) studied this question.