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Pengaruh Tingkat Penggenangan terhadap Pertumbuhan Semai Pedada (Sonneratia caseolaris (L.) Engler) di Kawasan Mangrove Tol Sedyatmo Angke Kapuk, Jakarta Utara Yuda Purnama; Iwan Hilwan; Cecep Kusmana
Jurnal Silvikultur Tropika Vol. 3 No. 1 (2012): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.3.1.%p

Abstract

Influence of Inundation Level Toward The Growth of Pedada Seedling (Sonneratia caseolaris (L.) Engler) in Mangrove Area Tol Sedyatmo Angke Kapuk, North Jakarta.Global warming that causing the melting of iceberg in the pole have an impact on rising of level sea which impact on mangrove forest ecosystems. So that, we need to know the information about species of mangroves that can be adapted to increasing sea level and also species that can support for mangrove rehabilitation. Purpose of this research is to elaborate the effect of inundation on seedling growth and determine the level of inundation that support the good seedling growth. This research used randomized block design with inundation level as a treatment. There were three treatments consisting of inundation until the limit of the root neck, inundation between ¼ stem height and ½ stem height, and inundation between ½ stem height and ¾ stem height. Mangrove species that is used in this research is 2 and 4 months years old seedling of S. caseolaris. The research results showed that the level of inundation of the root neck gives the best effect to seedling growth. However, S. caseolaris can adapt and having good growth at inundation up to ½ stem height. In general, the influence of inundation level give effect to the growth variable responses, except in height, length of internode, and height increment of seedling.
The Initial Study on Cocomulsa to Push Growth of Jati Seedling in Sukamakmur Village, Bogor Iwan Hilwan; Yuda Purnama
Jurnal Silvikultur Tropika Vol. 3 No. 2 (2012): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.3.2.%p

Abstract

Teak (Tectona grandis L.f.) is a tree species was almost cultivated for log produced in Java, Indonesia. The purpose this research was to identified the influence of cocomulsa application for growth of teak seedling on the field. Cocomulsa was made from coconut-fiber use latex glue. Cocomulsa can take hold of soil moisture and can defend the weeds movement. Treatments in this research that are using of stake, herbicide, and hoe. The results of this study that interaction from stake and hoe combinations was influenced significantly to growth of plant circumference and high. Based on normality test, that occur disseminating of high and circumference average value to following date normality line, in where average  of high and circumference significant toward growth of teak. The result of calculation from minitab software indicate that the growth ofe teak seedling was not significant. That is because of unless the time from this research, monitoring just done in 2 months. Whereas teak is slow growing species with level of growth is long enough, so the different from that treatments have not seen in clear. Visually, teak plants with cocomulsa was better growth than teak without cocomulsa. And nominally, cocomulsa research toward growth of teak have not seen significant because of unless time for response observation from teak plant. So, in cocomulsa influence research next time that have to use fast growing species and take long time for observation.
Co-Authors Iwan Hilwan