Perbanyakan tanaman ganitri secara generatif mengalami hambatan karena terjadinya dormansi kulit sehingga benih sulit untuk berkecambah. Salah satu cara yang dapat dilakukan untuk memenuhi kebutuhan bibit adalah melalui perbanyakan secara vegetatif dengan stek pucuk. Penelitian ini bertujuan untuk mengetahui keberhasilan tumbuh stek pucuk ganitri ( ) pada aplikasi antara media dan hormon tumbuh di persemiaan. Rancangan penelitian yang digunakan adalah rancangan acak kelompok (RAK) dengan pola faktorial 4 x 4. Faktor A adalah media tumbuh yang terdiri dari : A . Pasir, A . pasir : arang sekam (1 : 1), A . pasir : sabut kelapa (1 : 1) dan A . sabut kelapa : arang sekam (1 : 1), faktor B adalah hormon /zat pengatur tumbuh (ZPT) IAAyang terdiri dari : B . 0 ppm; B . 100 ppm; B . 200 ppm dan B . 300 ppm, setiap kombinasi perlakuan diulang tiga (3) kali serta masing-masing ulangan terdiri dari 15 stek. Parameter yang diamati adalah persen hidup, keberhasilan pembentukkan tunas (jumlah dan berat kering), perakaran (jumlah, panjang dan berat kering). Hasil penelitian menunjukkan bahwa penggunaan media tumbuh pasir dan zat pengatur tumbuh IAA ppm 300 ppm (A B ) memberikan pertumbuhan terbaik dibandingkan kombinasi perlakuan yang lain. Hal tersebut ditunjukkan dengan persen hidup, jumlah tunas, jumlah akar, panjang akar berat kering akar berat kering tunas yang lebih tinggi yaitu berturut-turut 97,77%; 5,66 buah; 4,66 buah; 14,35 cm; 0,67 gram dan 1,57 gram.
ABSTRACT
Generative propagation of (ganitri) have barrier because of bark dormant with the result that seed is hard to be germinated. One of method to fulfill seedling requirement is vegetative propagation by shoot cutting. The objective of this research was to determine the effect of media and growth hormone on shoot cutting growth of Elaeocarpus ganitrus in nursery. A group completely randomized design 4 x 4 was used in this experiment. The main factors are growth media (A) and growth hormone IAA (B).
The objective of this research was to find out the transplanting media which is able to promote the best growth and quality of Manglieta glauca BI seedling. The experiment was conducted at the nursery of
Research on forest floor biomass and litter fall was conducted in Blanakan mangrove forest, Subang, West Java in July-December 2006. Stratified random sampling method was used with 2 plots of ± 50 m x 50 m each. Three observation spots in each plot were located purposively. Parameters observed were fresh weight, dry weight, moisture content, layer depth of organic material, and litter fall. The data then were analyzed using descriptive analysis. Result showed that the the available total biomass on Blanakan mangrove forest floor were 11.164 ton/ha and moisture content = 74.60%; the biomass consisted of humus layer = 4.37 ton/ha, fermentation-1 layer = 1.558 ton/ha, fermentation-2 layer = 0.84 ton/ha, and litter layer = 4.369 ton/ha. Litter layer was at the depth of 0-1 cm, fermentation layer was at 1-2.5 cm, and humus layer was at 2.5-3 cm. The rate of litter fall was 8.56 ton/ha/yr of fresh weight are 6.23 ton/ha/yr of dry weight. Based on mangrove species dominant at Blanakan, it was found that api-api (Avicennia marina (Forssk.) Vierh.) produced more litter than bakau (Rhizophora apiculata Blume) i.e. 6.51 ton/ha/yr and 4.95 ton/ha/yr respectively.
(TNGHS) presented experiences of resident pressures coming from community who live in and around the area, and who depended on forest product and land of area. These condition were distinguished by the existence of illegal logging activity and land use for farming. Restoration represented one of actions to return community involvement and to make ecosystem to function initialy in the national park area. Society Kampong Conservation (MKK) Cimapag in the year 2004 was established to prevent illegal logging and farm at the area of TNGHS. Activities of the restoration were conducted by six society groups covering activity of collecting crop seeds, planting and maintenance. Up to now, the wide of planted area was 49.5 ha, on which 19,817 plants consisted of rasamala, puspa, and huru were planted. Applied restoration model at kampong of Cimapag had not yet fulfill requirement of local society on forest product and wood, agriculture product, firewood and food for livestock. However it could lessen farm activities and illegal logging in the area of TNGHS. It is suggested to make zonation in the national park area in order to be more focused on its management which is conducted by a collaborative approach. Besides that, to fulfill requirement of society on firewood, livestock feed and agriculture product at Society Kampong Conservation Cimapag, on agroforestry system can be applied.
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