ABSTRACT" "Taungya system that originally started in 19th century British Burma is now applied in many countries to serve as a tool for reforestation of degraded areas. Understanding the behavior of taungya farmers is crucial for better management of taungya plantation projects but so far little research has been conducted on this subject. Through a case study in the Bago Range of Myanmar, this paper argues that ecological factors and the Burmans? customary land tenure were affecting the taungya farmers attitude towards the project. In the Reserved Forests (RF) there are cultivators who live on agriculture utilizing lowlands as well as uplands. Some of these cultivators were recruited by the Forest Department for the project, but at the same time the project itself was distributing taungya farmers as new cultivators in the RF, since the lowland was not involved in the project. Through this procedure the department was achieving plantation targets in remote areas, and virtually demarcating the boundary of the RF. However, the recruitment of cultivators is uncertain, and the lowlands escape from forest legislation. The cultivators are granted no legal right to live in the RF and they receive little administrative support from the government. Therefore, to ascertain sustainable man-made forest management, more investment in forest administration and social welfare might be required, and the department may face the necessity of seeking a way to accommodate more funding." Key words: Tectona grandis / taungya / Myanmar / Burmans / lowland