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Kota mataram,
Nusa tenggara barat
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 66 Documents
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Search results for , issue "Vol. 23 No. 2 (2023): Special Issue" : 66 Documents clear
Morphological Appearance of M3 Generation Mutant Strains of Brown Rice (G16) to Support Rice Seedingi in Upland Ria Ayu Chandraningsih; Taufik Fauzi; Suwardji; Anak Agung 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.v23i2.5329

Abstract

Brown rice local cultivars are found in West Nusa Tenggara, but brown rice is still very rare to be used as a source of genetic diversity and its improvement is also lacking to be considered. This research aims to determine the effect of 300 Gy gamma ray irradiation on the quantitative properties of third generation G16 brown rice (M3) in the uplands. In this research, an experimental method was used with field experiments from May to December 2022 in Tatar Hamlet, Nyurlembang Village, Narmada District, West Lombok Regency. This research used Randomized Block Design (RBD) in an Augmented design with 18 treatments consisting of 15 G16 mutant strains and 3 comparison plants. The data obtained were analyzed using Analysis of Variance (Anova) with a level of 5%, then the real different treatment was further tested using the Least Significance Different (LSD) test. Based on the results of the research, it was obtained that some of the quantitative traits observed did not have differences in the properties of the elders and their comparators. The morphological apperance of mutant plants is the same as that of both the elders and the comparison varieties. However, it can be said that all strains based on their morphological appearance have the potential to be developed on dry land, because all strains tested show the same results compared to their elders and peers.
Genetic Parameters of Rice Strains (Oryza sativa L.) Functional for Development and Increasing Production in Medium Plain Dry Lands Amilia Qurota A'yun; M. Taufik Fauzi; Suwardji; A. A. K. 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.v23i2.5331

Abstract

Functional rice is a food that contains more than one forming component that is useful for health. Nowadays public interest in functional food is increasing, so functional rice production needs to be increased. Therefore, this research was conducted with the hope of obtaining information on superior agronomic characters to increase the yield power of functional rice strains. The method used was experimental using a randomized group design (RAK). Data analysis consists of Analysis of Variance, genetic diversity coefficient, phenotype diversity coefficient, genotype correlation, phenotype correlation, and heritability in a broad sense. The results showed that the heritability value of high area meaning is found in the character of flowering, harvest age, plant height, panicle length of the amount of grain contained, and the amount of empty grain. The high value of the KKG and KKF is indicated by the character of the number of non-productive saplings, while the lowest value is indicated by the character of the age of harvest. All quantitative characters observed showed positive genotypic correlation results to grain weight per clump. While in phenotypic correlation only the character of plant height, panicle length, the amount of grain containing, the amount of hollow grain and the weight of 100 grains are positive. Based on the analysis that has been carried out the character  of plant height, panicle length, the amount of grain containing the amount of hollow grain and the weight of 100 grains need to be taken into account as selection criteria to obtain high-yielding functional rice.
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.
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.
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.
Study of The Chemical Properties of The Post-Harvest Peanut (Arachis hypogaea L.) Pertilized by The Mushroom Baglog Waste Compost Zuhraini Zuhraini; R. Sutriono; Lolita Endang Susilowati
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.v23i2.5517

Abstract

Availability in the soil varies greatly, influenced by the interaction between the chemical properties of the soil and some other soil traits such as the physical and biological properties of the soil. An analysis of the chemical properties of the soil is vital to recognizing availability of nutrients for future crop cultivation. The purpose of this study is to know the chemical conditions of the ground after the harvest of the peanut plant after given the mushroom compost post fertilizer. The design of the experiment used in this study is a complete random design (ral) with a dose of mushroom post baglog fertilizer 6 and a degree of fertilizer recommendation 1 (as control). As for the treating cedar that is used is p1 = 100% recommendation fertilizer, p2 = 2 ton ha-1 fertilizer compost of the mushroom baglog, p4 = 4 tons of ha-1 fertilizer compost of the mushroom baglog, p5 = 6 tons of ha-1 Studies show a different dosage of fertilizer has a real impact on all the parameters observed.
Identification of Pests, Diseases, and Nutrient Deficiencies in Rice (Oriza Sativa L.) Variety Sunggal Eva Arsitasari; Nur Rokhimah Hanik; Tri Wiharti
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.v23i2.5545

Abstract

This study aims to identify pests, diseases and nutrient deficiencies in the Sunggal variety of rice (Oriza sativa L.). This research was conducted in June 2023. The research location was carried out in rice fields belonging to farmers in Sidorejo Hamlet, Polokarto District, Sukoharjo Regency. This research is descriptive qualitative by making direct observations or observations on rice fields, interviews and literature. The results showed that there were 7 pests that attacked this single variety rice plant, consisting of 5 pests from the insect class (insects), 1 from the mollusk class, and 1 from the aves class. Pests caused by insects (insects), namely: rice bug (Leptocorisa oryzae), ground bed bug (Scotinophara coarctata), white rice stem borer (Scirpophaga innotata Walker), armyworm (Spodoptera litura), grasshopper (Oxya servile). Caused by molluscs, namely the golden snail (Pomacea canaliculate) and caused by birds, namely sparrows (Lonchura sp). While there are 6 caused by diseases, namely caused by fungi/fungi there are 5 and caused by bacteria there is 1. Among those caused by fungi/fungus namely: brown leaf spot on rice (Helminthosporium oryzae), narrow brown leaf spot on rice (Cercospora oryzae), stem rot in rice (Sclerottium oryzae), rice leaf blight (Rhizotonia solani) and leaf blast (Pyricularia grisea). Caused by bacteria, namely bacterial leaf blight of rice (bacteria: Xanthomonas oryzae pv oryzae). Then lastly there is one that is caused by a lack of nutrients, namely: potassium deficiency.
Physical and Chemical Quality of Fresh Maggots Cultivated with Special Application of The Media Used Dwi Kusuma Purnamasari; Erwan; Sumiati; Rijki Purnama S
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.v23i2.5612

Abstract

The high price of protein feed for livestock makes maggots potential as an alternative protein feed. The first stage in this research was maggot maintenance and maggot harvesting on the 15th day of maintenance. Next, measurements of the physical and chemical quality of fresh maggot were carried out. Parameters for measuring the physical quality of fresh maggot consist of harvest weight, individual weight, individual length and color. The parameters for measuring the chemical quality of fresh maggot consist of water content, ash, crude fat, crude fiber and crude protein. Data analysis was carried out using the Independent Sample T-test. The results showed that the maggot that was cultivated with the special media used had an average harvest weight of 1.24 kg, while the maggot that was cultivated without the special media used had an average harvest weight of 0.72 kg. The maggot that was cultivated with the special treatment of the media used contained 31.5% protein, while the maggot that was cultivated without the special treatment of the media used contained 32.9% protein. The conclusion of this study is that maggot that is cultivated with the special treatment of the media used produces maggot with superior physical quality compared to maggot that is cultivated without the special treatment of the media used.
Condition of Coral Diversity in Kuta Mandalika Coastal, Central Lombok Regency Dining Aidil Candri; Bagus Hakimi; Hilman Ahyadi; I Wayan Suana; Eka Sunarwidhi Prasedya; Kartini Ambarwati; Aina Ul Mardiati
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.v23i2.5627

Abstract

Development and operational activities in KEK Mandalika can increase sedimentation of waters caused by erosion of construction material activities, this have an impact on coral reef ecosystems. Coral reef ecosystems have several important roles in support life of various aquatic organisms, Damage to the coral reef ecosystem directly and indirectly, sooner or later will threaten the sustainability of the use of these resources (social economy) and the safety of the community. Observations were conducted in KEK Mandalika coastal at 6 observation points less than 10 m. The results showed that the highest percentage of live coral cover was found in Kuta Mandalika coastal at PIT 4 area (30%, damaged category, moderate status). While the lowest percentage of coverage was at PIT 5, which was 2% (damaged category, bad status). Overall the percentage of coral cover in the Kuta Mandalika area is included in the damaged category. One of the reasons is because at the lowest tide on the beach, the volume of water is very small so that many hard corals are exposed to solar radiation. This limits the types of hard corals that can grow in the intertidal zone of Mandalika coastal. Genus diversity at this location is low, ranging from 0.0782 to 0.1288. Several genera of the Nephtheidae family dominate the observation sites and form colonies of the same genus with a fairly large distribution. The average value of environmental parameter measurements in the Mandalika coastal is included in the good category for soft coral habitat and growth.

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