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Journal : Journal of Tropical Biodiversity

Distribution of Karamunting (Rhodomyrthus tomentosa AITON) in Several Regions and Its Secondary Metabolite Content Yenisbar Yenisbar; Asmah Yani
Journal of Tropical Biodiversity Vol 2 No 3 (2022): August 2022
Publisher : Universitas Nasional Jakarta

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Abstract

Karamunting (Rhodomyrtus tomentosa Aiton) (fam: Myrtaceae), also called Ceylon cherry, downy rose myrtle, is native to South Asia. It treats diarrhea, dysentery, leukorrhea, hemorrhoids, toothache, infection and bleeding after childbirth, heart, and clears cholesterol. The research was conducted between April and August 2016 in South Sumatra in Padamaran and Tanjung Batu Villages and West Kalimantan in Kawat, Karamunting, and Capkala Villages analyzed the distribution of the karamunting plant and its secondary metabolites. Purposive sampling with the transect method was used. The observation variables analyzed included the species present, the number of individuals of each species, height, DBH, and coverage area. Species Composition, Relative Density (KR), Relative Frequency (FR), Relative Dominance (DR), and Important Value Index (INP) were all instrumental to the data analysis calculation. The findings indicated that there were 48 seedlings and 19 sapling species. The density and frequency were greater than that of other plants at the growth rate of seedlings and saplings. While the distribution was dominant in the Capkala Village, the most abundant phenol of karamunting leaves was discovered in Tanjung Batu Village, plentiful flavonoids in Padamaran Village, and the highest saponins and tannins in Karamunting Village. Furthermore, tannin was plentiful in Capkala Village.
Correlation of Butterfly (Lepidoptera: Papillionoidea) With Flowering Plant In The Bodogol Nature Conservation Education Center, Mount Gede Pangrango Hasni Ruslan; Yenisbar Yenisbar; Abda’u Satiyo
Journal of Tropical Biodiversity Vol 3 No 2 (2023): April 2023
Publisher : Universitas Nasional Jakarta

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Abstract

Butterflies are one type of insect that functions as a pollinator. Research on butterflies in the Bodogol Nature Conservation Education Area (PPKAB), has already been published, but research on the correlation of butterflies with flowering plants has not yet been published. The purpose of this study was to determine the correlation between butterflies and flowering plants in the PPKB area. The research was conducted in February-June 2022 in heterogeneous and homogeneous forests. The research was conducted using purposive sampling method. In each observation, 10 plots were observed in heterogeneous on 3 lanes (Rasamala, Canopi, and Aprika), and in homogeneous forest on 3 lanes (Cikaweini-Cipadaranten, and Gembong koneng). Research using cameras and insect nets. In this study, 78 species, 4 families with 261 individuals were found in heterogeneous forests, and 39 species, 5 families with 158 individuals in homogeneous forests. Butterfly families: Papilionidae, Pieridae, Nymphalidae, Lycenidae, and Rionidae. The Nymphalidae family is one of the families with the highest number of species and individuals compared to other families. Based on the index value of butterfly diversity, it is classified as high (heterogeneous) and medium (homogeneous). High evenness index in both habitats. Jamides celeno is one of the dominant species in both habitats. Correlation analysis showed that there was a strong relationship between flowering plants and the number of individual butterflies in both habitats (heterogeneous and homogeneous).
The Effect of Dosage and Time of Application Potassium Fertilizer on Growth of Bidara (Ziziphus Rotundifolia) Wayan Rawiniwati; Yenisbar Yenisbar
Journal of Tropical Biodiversity Vol 3 No 2 (2023): April 2023
Publisher : Universitas Nasional Jakarta

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Abstract

This research aimed to analyze the effect of dosage and time of application and potassium fertilizer to bidara plants’ (Ziziphus rotundifolia) growth. This research was arranged by Split Plot design in a Randomized Complete Block Design (RCBD). The Factor of Potassium time of application, that were during planting, 2 weeks after planting; 4 weeks after planting; 6 weeks after planting, was as the main plot, while the potassium fertilizer dosage of (K2O) 0 kg ha-1, 60 kg ha-1, 120 kg ha-1, 180 kg ha-1 as secondary plot. The results showed that the time of application of Potassium fertilizer had an effect on the height of the best Bidara at the age of 2 week after planting. The 60 kg K2O ha-1 dosage can increase plant height from 2 week after aplication to 10 week after aplication. The applications of 4 week after planting produced in a higher number of shoots than applications at 2 or 6 week after planting. The fertilizer application at 6 weeks after planting showed the highest fresh leaf weight and dry leaf weight which were 50,631 g and 20,900 g and the lowest in application 2 weeks after planting were 24,263 g and 12,925 g. The fertilizer dosage as much as 60 kg ha-1 produced the highest dry weight which 18,069 g. Fertilizing as much as 180 kg ha-1, showed the highest root fresh weight of at 12,757 g, compared to the control (8,900 g). The Potassium application of 6 week after planting produced the longest root growth (20,500 cm) compared to other treatments.