Effect of Inundation Depth, Dosage of Sago Bagasse and Husk Charcoal on Sago Palm Seedling (Metroxylon sagu) Grown in Polybags

Various attempts have been made to increase the survival rate (SR) of sago plants (Metroxylon sagu Rottb), especially the treatment of growing media and irrigation. The purpose of this study was to calculate the effect of (i) the depth of inundation on the survival rate of the seedling of Tana Luwu sago palm variety; (ii) dosage of ameliorant of sago bagasse and husk charcoal on the survival rate of the seedling of Tana Luwu sago palm variety. The research was conducted in Waelawi Village, West Malangke District, North Luwu Regency; South Sulawesi, Indonesia, April to June 2023. The study used a two-factor factorial design with a split plot design field design. The first factor is the depth of the stagnant water that flows continuously on the side of the polybag as the main plot, consisting of 3 levels: 3 cm, 6 cm and 9 cm. While the second subplot factor is the planting media factor consisting of 5 levels: without ameliorant, soil only (A0S6); a mixture of sago bagasse and soil with a ratio of 1:2 (B2S4); a mixture of soil and sago bagasse and soil 1:1 (B3S3); a mixture of husk charcoal and soil with 1:2 (C2S4), and a mixture of husk charcoal with 1:1 (C3S3) respectively based on volume. The seedlings used are relatively small, weighing between 168-728 grams (after trimming the leaves, leaving a midrib of 60 cm). The variable measured was the survival rate of the seedlings up to 50 days old. The results showed that the depth of inundation, the dose of bagasse and rice husk charcoal, had a significant effect on the survival rate of the Tana Luwu sago palm variety seedlings.