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INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,562 Documents
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Analysis of Soil Chemical Properties and Their Relationship with Tobacco Plant Productivity in Dry Land Ema Rahila Azzahra; Taufik Fauzi; Suwardji; A. A. Ketut Sudharmawan
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.5334

Abstract

Dryland is defined as land that is never flooded or submerged in water throughout the year. Indonesia has a very large area of dryland, which is 11,876,881 hectares. Generally, drylands have low fertility and thin soil layers with low organic matter content. There are several types of plants that can be cultivated in drylands, one of which is tobacco. Environmental conditions such as soil conditions (physical and chemical properties of soil) affect the production and quality of tobacco, among others, soil status. In this topic, the descriptive method was used as an approach. Data collection techniques (literature) were carried out using books, articles, and scientific journals derived from previous research. It was concluded that an increase in C-organic content, CEC, and KB increased tobacco production. Conversely, an increase in pH can adversely affect tobacco production and quality.
The Effect of Cover Crops on Soil Quality in Gogo Rice Planting in an Effort to Increase Yield M. Iqbal Atmayadi Saifuddin; Taufik Fauzi; A.A.K. Sudharmawan
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i4.5335

Abstract

Organic matter is one of the important factors that can determine the level of soil fertility and health. The presence of organic matter in the soil is currently quite worrying. This is due to the behavior of the farmers themselves who tend to carry out inappropriate cultivation and the excessive use of inorganic fertilizers and the use of chemical pesticides that exceed the dosage. It is necessary to take appropriate measures so that the organic matter in the soil is not reduced. The analysis was carried out descriptively by conducting a literature study on relevant literature and conducting a qualitative analysis. Based on the results of a review of international and national journals that cover crops can play an active role in the growth rate and yield of cultivated plants. Ground cover plants can be used as conservation plants, soil health and fertility and the environment as erosion control, maintaining soil moisture, controlling pest populations, suppressing weed growth. The advice that can be given from this paper is the need for further research on the use of cover crops as a source of organic matter in soil balance and agro-ecosystems.
Potential Utilization of Plant Growth Promoting Rhizobacteria (PGPR) and Various Growing Media on Soil Fertility in Dry Land Demy Afiya Restiyah; Taufik Fauzi; Suwardji; A. A. Ketut Sudharmawan
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.5339

Abstract

The potential of dry land for agricultural development in Indonesia is very large, one way that can be done to increase soil fertility and productivity of dry land is by using PGPR biologival fertilizers and various planting media such as husk charcoal and cocopeat. The purpose of this writing is to determine the effect of giving Plant Growth Promoting Rhizobacteria and various planting media on soil fertility in dry land. This research was conducted using a descriptive method by obtaining data from publication in the form of research journal, review journal published in international and national journals and other related information. Descriptive analysis was carried out by means of 1). Do a search of appropriate literature 2). Screening and selecting relevant articles 3). Conducting qualitative analysis and 4). Compile articles. The application of PGPR and various planting media can increase the physical and chemical fertility of the soil and nutrient absorption for the soil, such as improving soil ph, organic C, P-total and soil N-total. The mechanism of PGPR to increase soil fertility is by fixing nitrogen in the air with the help of the enzyme nitogenase, as a phosphate solvent, and as a producer of plant hormones.
The Status of Land Cover in The Main Watershed (DAS) of Lombok Island and its Potential as Acause of Drought Hidayatun Nufus; Taufik Fauzi; A. A. Ketut Sudarmawan; Suwardji; Mahrup
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i4.5342

Abstract

Changes in land cover that occur from year to year continue to increase. Human activity, especially in the utilization of natural resources, especially forests for various purposes, resulted in an increase in open land as well as critical land. As a result, the upstream watershed area which originally had an important role for the hydrological cycle, gradually decreased its function and ability as a catchment area. The purpose of this writing is to find out the status of land cover in the main watershed of the Lombok island on the class of land cover that applies universally, and examine its potential as a cause of drought on the island of Lombok. This research was conducted using the descriptive method, through the following stages, namely (i) secondary data collection, (ii) data analysis and (iii) data interpretation. This research was conducted from March 2023 to June 2023. The research area covers the island of Lombok. The four main watersheds (DAS), namely Dodokan, Menange, Pustik and Jelateng. Data 12 Land cover, namely Evergreen/Deciduous needieleaf, Evergreen broadeaf tress, Deciduous brodeaf tres, Mixed/other tresses, Shurbs, Herbaceous vegetation, Cultivated and manged vegetation, Regularly flooded vegetation, Urban/built-up, Snow/ice, Barren, Open water downloaded from the wibe site earthenv.org. Altitude data is downloaded from the web site https://globalsolaratlas.info/map.
Length and Weight Relationship of Mackerel Fish (Auxis rochei) at Fish Collector Markets in Ampenan, Lombok Ulya Nisa Afifa; Dining Aidil Candri; AA Ngurah Nara Kusuma; Hilman Ahyadi; Yuliadi Zamroni
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i4.5343

Abstract

Lisong tuna (Auxis rochei) is one of high economic potential value of fish because of its abundance and often found in the fish market in Ampenan. Evaluating the impact of fishing to the growth pattern of length-weight of tuna is needed to ensure the sustainability of lisong tuna population. It is feared that the high intensity of tuna (A. rochei) fishing can cause growth disturbances and a decrease in local tuna populations. This study aimed to determine the relationship between the weight and length of lisong tuna (A. rochei) to their growth patterns in the fish market of Ampenan. Thirty individuals of lisong tuna were collected from two fish markets, Bintaro and Kebon Roek, in Ampenan. The equation of Linear Allometric Model is used to evaluate the length and weight relationship in growth patterns of lisong tuna. This study resulted in the positive allometric growth pattern of lisong tuna with slope value more than 3 (b=3.79). It indicated that the lisong tuna which were collected in Bintaro and Kebon Roek markets have a weight growth rate faster than their length growth rate. It means that the lisong tuna sold in Ampenan markets is quite fleshy and has a good growth rate.
Potential of Mychorrizal Biological Fertilizer and Green Beens Intercroping in Increasing The Yield and Anthocyanin of Glutinous Corn Pratiwi, Novilian; Fauzi, Taufik; Sudharmawan, A. A. Ketut
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.5344

Abstract

Purple corn is one of the varieties that are widely developed in Thailand and America. Purple corn has a high anthocyanin content so it has potential as an antioxidant. The disadvantage of anthocyanins is that they have low stability depending on sunlight and nitrogen. Data analysis methods are carried out descriptively with literature studies, namely; 1) choose articles that are relevant and in accordance with the theme of writing; 2) conduct qualitative analysis; 3) compile articles. Based on the results of previous studies, it can be seen that the protein content of corn superimposed with orok-orok plants continues to increase and the highest content is in the treatment of 2-row planting patterns, which is 14.42%. The application of mycorrhizal fertilizer as much as 5 g can increase the protein content of sorghum which is 10.75% compared to control (without mycorrhiza) which is 9.10%. Intercropping and mycorrhiza can be the right solution to increase anthocyanin content because they are able to fix N and help absorb N into plants properly and do not cause adverse effects on the environment.
Review Paper: Use of Vetiver (Vetiveria zizanoides L.) and Rice Husk Biochar in Remediation of Mercury (Hg) Polluted Soil Baiq Siti Rohmaniati; Taufik Fauzi; A. A. Ketut Sudharmawan; Suwardji
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.5345

Abstract

Indonesia has abundant natural resources. One of the great natural resources is mineral resources in the form of gold. With this potential, the number of national mining locations continues to increase, both large, medium, small and unlicensed gold mining (PETI) carried out directly by the community, either in groups or individually, which can have a negative impact on the environment. pollution such as land and water. , because the results of gold processing which contain heavy metals (Hg) are immediately thrown away without any further processing. This can harm the surrounding environment and even enter the food chain. Therefore, the purpose of this paper is to study and find out related information regarding the effectiveness of phytoremediation of soil contaminated with heavy metals such as mercury (Hg) using vetiver (Vetiveria zizanoides L.) and soil ameliorant materials in the form of rice husks. biochar to reduce the concentration of these heavy metals, as well as the mechanisms involved in phytoremediation of soil contaminated with heavy metals. The vetiver root plant (Vetiveria zizanoides L) is very effective for use in remediating soil contaminated with mercury (Hg) or other heavy metals. The use of biochar can influence the growth and absorption of heavy metals by vetiver (Vetiveria zizanoides L). Biochar is also able to improve the physical and chemical properties of soil and stabilize heavy metals in the soil.
Interest Analysis Epilachna sp. of Plant Types of Eggplant Leaves (Solanum melongena), Rimbang Leaves (Lycopersicum torvum), and Chili Leaves (Capsicum sp.) Weyni Iskandaria
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i4.5379

Abstract

The abundance, survival and reproduction of herbivorous insects are strongly influenced by changes caused by plant traits. One example is Epilachna sp.. An animal's likes or preferences can change with experience. If the availability of a particular food in the environment is low, then that type of food will be less available as food, but if the availability is higher or more abundant than usual, then that type of food will be consumed more (often). So, the main aim of this research is to find out what food preferences are most frequently attacked and eaten by Epilachna sp. and also the reasons and contents. The research method is qualitative research, meaning that the observations made by the researcher were obtained from various article references and direct observation. The feed given is eggplant leaves, rimbang leaves and chili leaves. The food that occupies the highest level is Epilachna sp. namely eggplant leaves, this is because there are nitrogen and alkaloids. The second rank which is not far from the first rank is Rimbang Leaf. Meanwhile, chili leaves occupy the lowest level or are not liked by Epilachna sp.
Organoid Culture Applications: Mini Systematic Review Rilwan Efendi; Puti Khairunnajwa Amar; Resti Rahayu; Putra Santoso; Zozy Aneloi Noli; Rita Maliza
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i4.5387

Abstract

Recent scientific developments in the stem cell field have made it possible to create complex organoids, or structures that resemble complete organs, in vitro. In the majority of these methods, stem cells produced from stem cells or tissue progenitors are allowed to self-organize into three-dimensional (3D) structures using culture systems in three dimensions. The purpose of this study is to ascertain the use of organoid culture in the area of health. This kind of study employs the literature review methodology. The Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) criteria are referenced throughout the stages of the literature review performed in this study. The four processes that make up this level are identification, screening, eligibility, and acceptance. These discoveries showing that human stem cells and patient-derived pluripotent stem cells can be used to generate organoids open up a wide range of opportunities for modeling and disease development, toxicological research and medication discovery, and the field of regenerative medicine. Here, we discuss some of the most significant recent advancements in 3D human organoid production as well as the field's historical advancements. Finally, we discuss present restrictions and provide illustrations of how organoid technology may be used in the healthcare industry.
Urea’s Effect on Dry Matter, Organic Matter, and Crude Protein Content of Ammoniated Corn Straw Azhary Noersidiq; Syamsul Hidayat Dilaga; Suhubdy Suhubdy; Muhamad Amin; Fahrullah Fahrullah; Vebera Maslami
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i4.5388

Abstract

Feed is an absolute necessity that must be guaranteed in the maintenance of ruminants but its availability is always a problem during the dry season so that a fresh forage is difficult to obtain and only agricultural waste in the form of straw is available. One of widely used by farmers, especially in Lombok region, is corn straw. This research aims to evaluate the nutritional content of corn straw that has been ammoniated using urea. This study used corn straw and urea for the ammoniation process with a complete randomized design (CRD) design consisting of 4 treatments and 4 replications, namely T1= corn straw without ammoniation (control), T2= corn straw ammoniated with a dose of 2% urea, T3= corn straw ammoniated with a dose of 4% urea and T4= corn straw ammoniated with a dose of 6% urea. The variables measured were dry matter (DM), organic matter (OM) and crude protein (CP). The results showed that urea used in the ammoniation process of corn straw showed a significant effect (P<0.05) on increasing the content of DM, OM and CP with results ranging from 21.02% - 23.98% for DM content, 88.13% - 91.07% for OM content and 13.53% - 23.81% for CP content. It was concluded that the best dose of urea for ammoniation of corn straw was treatment T4 with a dose of 6% urea with the results of the content of 23.98% DM; 89.94% OM and 23.81% CP, respectively.

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