Pramudya, Bambang creator Singh, Gajendra Chairperson Olesen, Svend Elsnab Examination Committee Koike, Masayuki Examination Committee USAID-ASEAN Scholarship Donor text series technical report th Bangkok Asian Institute of Technology 1981 continuing eng 45 p. An experiment was carried out on alang-alang area in South Sumatera., Indonesia, to compare three methods which might be used in alang-alang land clearing. These were mechanical, a combination of mechanical-biological, and a mechanical- chemical method. Each method was tested with three level treatments, totalling nine treatment combinations. Observations were taken to determine field performance of land clearing machinery and rate of alang-alang regrowth up to three months after land clearing. Comparison among the given treatments was evaluated in the term of costs and the rate of alang-alang regrowth after land clearing, both in its density and overground biomass. The lowest regrowth rate was found in the clearing using a combination of mechanical-biological method, whereas the mechanical method exhibited the highest regrowth rate. The mechanical-chemical method entailed the highest cost, while the costs of the mechanical-biological method were slightly higher than the mechanical method. A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 1981 Clearing of land Indonesia Sumatera, South Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B21535 http://203.159.5.9/ait-thesis/detail.php?q=B21535 110908 20260817172832.0