Analysis of gambier monopoly index in West Sumatra Province

Abstract Gambier production in Indonesia comes from smallholder plantations. West Sumatra Province is the leading producer of gambier, with a supply around 80-90 per cent total national gambier production. Based on empirical data, when selling price exports increases or fluctuates, farmers does not increase as much at level exporter traders. This condition creates marketing inefficiency. The monopoly index (MPI) one way to measure efficiency based performance each agency. In this regard, current business environment also affected by Covid-19 pandemic. study analyzed channel during covid 19 A survey was conducted study. type data used research cross-section data. Respondents were farmers, traders, and exporters Padang City, Lima Puluh Kota, Pesisir Selatan Regency. analytical method using Lerner index. analysis index, it known that have an enormous value compared other institutions, where collecting trader has 4.84, inter-regional traders 2.09, 12.81 MDI. These values showed dominate Province. strong position determining prices influenced cooperation (IRT).