Ulin (Eusideroxylon swageri T.et.B) seed cleavage, fast way of germination in Sambas Regency, West Kalimantan

Abstract

Ulin (Eusideroxylon swageri T.et.B) or Ironwood has never been cultivated by the people in Sambas, West Kalimantan. As the limited duration of the germination and growth of ironwood trees need to breakthrough propagation techniques. Forests in Sambas Regency are beginning to lose the ironwood trees because of the wood that is strong and durable (including the strong class I and durable class I), so that it is widely used for building houses and bridges. This study aims to propagating of ironwood seeds through propagation techniques. The seed coat treatments and cleavages used for this experiments in Sajingan Besar of Sambas Regency. Sowing seeds regular of Ironwood takes 9 months and can accelerated to be 3 months but the seed coat must be peeled first. The characteristic of ironwood seed has a polyembryonic seed, so that used treatments of cutting the seeds to be 2 and 3 parts of seed. The results that the ironwood seeds can grow faster after 4 weeks planting if peeled the coat and cutting seeds into two part of seeds. The quantitative analysis explained and showed in this paper.