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All Journal Jurnal Biologi Tropis ORBITA: Jurnal Pendidikan dan Ilmu Fisika Jurnal Pengabdian Magister Pendidikan IPA Jurnal Ilmiah Profesi Pendidikan
I Gde Mertha
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Physics

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Journal : Jurnal Biologi Tropis

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Community of Seaweeds on Cemara Beach East Lombok Intan Mushlihah; Lalu Japa; I Gde Mertha; Ahmad Raksun
Jurnal Biologi Tropis Vol. 20 No. 2 (2020): Mei - Agustus
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v20i2.1926

Abstract

Seaweeds (macroalgae) are a marine biological resource that have an important role in aquatic ecosystems and for society. The aim of this research was to determine community of seaweeds in Cemara Beach, East Lombok Regency.Data were collected at four observation points using a method of combinationof the line transect and quadrat. Seaweeds community data were analyzed using density parameters, important values, species diversity index, and species evenness index. The similarity percentage between transects was determined based on the Bray-Curtis cluster analysis using biodiversity program-version 2. In Cemara Beach there were 24 species of macroalgae which memberof 3 divisions, 11 orders and 15 families. Chlorophyta was a division with highest number of species. The number of species for Chlorophyta was 14 species, Rhodophyta division was 7 species, and Phaeophyta division 3 species. The species with highest density is Enteromorpha sp.,25.1 clumps/m2. Ulva lactuca is the species with the highest important value (72.69%). Diversity and evenness index in Cemara Beach seaweed species were 1,868 (medium category) and 0,699 (almost evenly distributed).The results of cluster analysis based on environmental parameters, species similarity and number of clumps of seaweed species, diversity index, and species evenness index indicate that seaweed in Cemara Beach can generally be divided into 2 groups.
Vegetative Growth of Kale Land (Ipomoea reptans poir.) Due to Different doses of NPK and Bokashi Fertilizer Ahmad Raksun; Mahrus Mahrus; I Gde Mertha
Jurnal Biologi Tropis Vol. 20 No. 2 (2020): Mei - Agustus
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v20i2.2022

Abstract

In order to maintain soil fertility, NPK fertilizer applications that have been carried out by farmer need to be combined with non chemical fertilizer such as bokashi. Research on vegetative growth of kale land due to NPK and bokashi fertilizer has been carried out in Bajur Village, West Lombok Regency. The purpose of this research was to detemine: (1) vegetative growth of kale land due to different doses of NPK fertilizer, (2) vegetative growth of kale land due to different doses of bokashi, (3) the effect of interaction of NPK and bokashi fertilizer on growth of kale land, (4) Optimum dose of NPK fertilizer and bokashi for kale land. This research used 2 factors design. The first factor is the dose of NPK fertilizer and the second factors is the dose of bokashi. The growth parameters measured were stem height, leaf length, leaf width and number of kale land leaf. Reseach data analyzed using analysis of variance. The results showed that: (1) NPK fertilizer treatment significantly affected stem height, leaf length and kale leaf width, but have no significant effect on the number of kale land leaves, (2) bokashi aplication significantly affected stem heght, leaf length and kale land leaf width but did not significantly affect the number of kale land leaves, (3) the interaction of NPK fertilizer and bokashi did not significantly affect all growth parameters measured, (4) the optimun dose of bokashi for kale land is 1,2 kg for 8 kg of soil and the optimum dose of NPK fertilizer is 1,5 g per plant.  It is recommended that kale land famers use 1,2 kg bokashi for 8 kg of soil and 1,5 g NPK fertilizer per plant.
Vegetative Growth of Pakcoy (Brassica rapa L.) Due to Different Dose of Bokashi and NPK Fertilizer Ahmad Raksun; Moh. Liwa Ilhamdi; I Wayan Merta; I Gde Mertha
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): September - Desember
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.v20i3.2156

Abstract

Pakcoy is one of popular vegetable croop in Indonesia. Effort to increase the growth of pakcoy can be done by fertilizing. Research on the vegetative growth of fakcoy due to different dosages of bokashi and NPK fertilizer has been carried out in Terong Tawah Village, Wes Lombok Regency. The objectives of this research were to determaine: (1) vegetatif growth of pakcoy due to different dose of bokashi, (2) vegetatif growth of pakcoy due to different dose of NPK fertilizer, (3) the effect of the interaction between bokashi and NPK fertilizer on pakcoy growth. In this research a two factor design was used. The first factor was the dose of bokashi and the second was the dose of NPK fertilizer. The growth parameters were plant height, number of leaves, leaf lenght and leaf width of pakcoy. The research data was analyzed using analaysis of variance. The result showed that: (1) different dose of bokashi significantly affected plant height, number of leaves, leaf lenght and leaf width of pakcoy, (2) different dose of NPK fertilizer significantly affected plant height, number of leaves, leaf lenght and leaf width of pakcoy, (3) interaction between bokashi and NPK fertilizer has no significant effect on all measured growth parameters.
The Effect of Fermentation Length and Dosage of Liquid of Organic Fertilizer Banana Peel on the Growth of Red Spinach (Amaranthus Tricolor L.) Nurul Fadhilah; Prapti Sedijani; I Gde Mertha
Jurnal Biologi Tropis Vol. 21 No. 3 (2021): September - Desember
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.v21i3.2759

Abstract

Fertilizer substitutes elements that have been used by plants. There are two available fertilizers, inorganic and organic fertilizers. Long-term use of inorganic fertilizers on a land negatively affects the crop and the soil fertility, hence, the organic one is a better choice. This study aims to determine the effect of liquid organic fertilizer of banana peels on the growth of red spinach and determine the best treatment for red spinach growth. This study used a Completely Randomized Design consisted of 2 factors (dosage of POC banana peel and length of fermentation time). Each has 4 levels, 3 replicates. The results of data analysis using ANOVA test show that the treatment of fermentation length and dosage of POC banana peel increase growth parameters of red spinach include plant height, leaf number, leaf area, fresh weight, and dry weight, while the interaction treatment of fermentation length and dosage of POC banana peel affects almost all growth parameters, except for the leaf area parameter that shows no interaction. DMRT (α 5%) test shows that the best combination treatment for plant height and fresh weight is a dosage of 8 ml POC of banana peel that have been fermented for 15 days, and the best treatment for leaf number and dry weight is a dosage of 8 ml POC of banana peel that have been fermented for 10 days.
Vegetative Growth of Green Eggplant Due to Treatment of Vermicompost and NPK Fertilizer Ahmad Raksun; Moh. Liwa Ilhamdi; I Wayan Merta; I Gde Mertha
Jurnal Biologi Tropis Vol. 21 No. 3 (2021): September - Desember
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.v21i3.2948

Abstract

Green eggplant is native to the tropics. Green eggplant is one of the most popular vegetable ingredients in Indonesia. The availability of nutrients in the growing media is one of the most determining factors for the growth and yield of green eggplant. Research on vegetative growth of green eggplant due to vermicompost and NPK fertilizer treatment has been carried out from April to August 2021. This study aims to determine: (1) vegetative growth of green eggplant due to vermicompost treatment, (2) green eggplant vegetative growth due to NPK fertilizer treatment, (3) green eggplant vegetative growth due to interaction of vermicompost and NPK fertilizer treatment. This research was conducted in a factorial completely randomized design with three replications. The first factor is the application of NPK fertilizer which consists of 4 levels and the second factor is the treatment of vermicompost which consists of 5 levels. Research data were analyzed using analysis of variance. The results showed: (1) treatment of NPK fertilizer with different doses significantly effected the number of leaves, stem diameter, leaf length, and stem height of green eggplant. The optimum dose of NPK fertilizer was 2 grams for one plant, which produced the number of leaves, diameter stems, leaf length and stem height of green eggplant were better than treatments at other doses. (2) The treatment of vermicompost had a significant effect on the number of leaves, stem diameter, leaf blade length, and stem height of green eggplant, the optimum dose of vermicompost was 1.8 kg  for 1 m2 of agricultural land, resulting in stem diameter, number of leaves, leaf length and green eggplant stem height was better than other treatments (3) the interaction of vermicompost and NPK fertilizer had no significant effect on stem diameter, number of leaves, leaf length and stem height of green eggplant.
The The Effect of Vermicompost and NPK Fertilizer on the Growth of Green Mustard (Brassica Juncea L.) Anggi Yuni Anggraeni; Ahmad Raksun; I Gde Mertha
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
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.v22i2.3381

Abstract

Fertilizers are nutrient sources that have a role in determining the growth and production of a plant. Fertilization can be done using organik fertilizers and inorganik fertilizers. The use of combination of organik fertilizers and inorganik fertilizers is carried out to reduce the risk of damage to the soil structure due to the use of inorganik fertilizers continuously. This study aims to determine the effect of applying vermicompost and NPK fertilizers and it’s combinations and know the most effective number of doses of vermicompost and NPK fertilizers for the growth of green mustard plants. The design used is a complete randomized design of 2 factors, namely the dose of vermicompost with 5 levels of doses and doses of NPK fertilizer with 4 levels of each dose in 4 replications. The treatment of vermicompost consisted of 0 gr, 75 ml, 150 ml, 225 ml, and 300 ml. The treatment of NPK fertilizers consisted of 0 gr, 0.4 gr, 0.6 gr, and 0.8 gr/100 ml water. The data were analyzed using ANOVA test. The results showed that the treatment of vermicompost and NPK fertilizers and combination did not have a significant effect on the growth parameters of green mustard plants, namely plant’s height, number of leaves, leaf area, wet weight and dry weight of plant.
The Growth Response of Kale Land (Ipomoea reptans Poir) to the Aplications of Vermicompost and NPK Fertilizer Ahmad Raksun; Mohammad Liwa Ilhamdi; I Wayan Merta; I Gde Mertha
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
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.v22i2.3447

Abstract

Kale land is a short-lived plant, containing the nutrients needed by the human body. The growth of kale land is influenced by various factors, one of which is the adequate supply of nutrients needed by plants. Fertilization is one of the efforts that can be done to ensure the availability of nutrients on agricultural land. Research has been carried out on the growth response of kale land due to the application of vermicompost and NPK fertilizers. The purpose of this research is to obtain information about (1) increased growth of  kale land due to the application of vermicompost, (2) increased growth of kale land due to application of NPK fertilizer, (3) increased growth of  kale land  due to the interaction of vermicompost and NPK fertilizer treatments. The research was carried out using an experimental method in the form of factorial arranged according to a completely randomized design. The first factor is vermicompost (C) with doses of 0 kg, 0.4 kg, 0.8 kg, 1.2 kg and 1.6 kg vermicompost per square meter of agricultural land. The second factor is the application of NPK fertilizer (P) at a dose of 0 g, 0.5 g, 1 g, 1.5 g per plant. Thus there were 20 treatment combinations and each combination was carried out with 3 replications. The growth parameters observed were plant height, total leaf, leaf length, leaf width and stem diameter of land kale. Research data were analyzed by Anova. The conclusions of the study were: (1) The application of vermicompost could increase plant height, number of leaves, leaf length and leaf width but could not increase stem diameter of kale land (2) application of NPK fertilizer can improve all growth parameters of kale land kangkong. (3) The interaction of vermicompost and NPK fertilizer cannot increase the growth of kale land.
The Diversity of Lichens in The Tourist Area of The Stokel Waterfall Central Lombok Suniyanti Suniyanti; Mahrus Mahrus; I Gde Mertha
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
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.v22i2.3586

Abstract

Lichen is a symbiosis of fungi and algae cause morphology and physiology are in one unit. It can be an indicator for environmental monitoring, especially as a bioindicator of air pollution, and therefore deserves more attention in the tropics. Data for the diversity and distribution of lichens in the Nusa Tenggara region is still very lacking. Benang Stokel Waterfall Tourism has high potential as a diversity center for exploration that needs attention, including the lichen community. This study aims to know and find the diversity of lichen species in the Benang Stokel Waterfall Tourism Area. Collecting data used two methods, i.e., the exploration method and the transect with 50 plots in size 2m x 2m along the transect line. The lichen diversity index analysis used the Shannon-Wiener Diversity Index, and the species Diversity Index (H') was 2,019 (intermediate category). The study found nine species of lichens: Cryptothecia, Cryptothecia Stirton, Lepraria Lepraria, Lepraria sp., Graphis Scripta, Grapes sp., Opegrapha ara, dan Chiodecton sp., were fully identified.  
Analysis of Bean (Phaseolus vulgaris) Growth Due to Treatment of Vermicompost and Different Types of Mulch Ahmad Raksun; Mohammad Liwa Ilhamdi; I Wayan Merta; I Gde Mertha
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
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.v22i3.4056

Abstract

Beans are vegetables that are widely cultivated in Indonesia. The growth of beans is determined by internal and external factors. The external factor that affects the growth of beans is the availability of nutrients. Vermicompost is an organic fertilizer that can be used to increase beans growth. Research has been carried out on Analysis of Bean (Phaseolus vulgaris) Growth Due to Treatment of Vermicompost and Different Types of Mulch. This study aims to determine: (1) the effect of the type of mulch on the growth of beans, (2) the effect of different doses of vermicompost on the growth of beans, (3) the effect of the combination of different types of mulch and the dose of vermicompost on the growth of beans. In this study, a 2-factor design with 4 replications was used. Bean growth parameters include number of leaves, leaf length, leaf width and plant height. Data were analyzed by Anova. The results of the study were: (1) the application of vermicompost significantly increased the number of leaves and plant height, but could not increase the length and width of the beans leaves. (2) the use of mulch can increase the number of leaves, stem height, number of leaves and leaf width of beans, black silver plastic mulch gives better results than rice straw mulch, (3) the interaction of mulch type and dose of vermicompost has no significant effect on all growth parameters measured.
Potential of Aik Bone Protected Forest as an Eco-Tourism Area Based on Structure, Composition and Vegetation Diversity Mega Safitri; Lalu Japa; I Gde Mertha
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): 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.v22i4.4265

Abstract

This research was intended to determine whether Aik Bone Protected Forest has potential to be developed as an ecotourism area based on the structure, composition and diversity of vegetation. Because the Aik Bone protected forest area had previously been developed into a tourist destination by surrounding community. But, it has been not success and cannot last long,, because the planning cinditions is bad and the lack of maintenance of the existing facilities. The Aik Bone protected forest is located in the Aik Bukak Village, North Batukliang District, Central Lombok Regency. The type of research was a descriptive quantitative research. The purpose research were to analyze about the density, frequency, dominance and diversity index of vegetation species. The vegetation species found in Aik Bone protection forest were classified into 15 families and with a total of 156 in dividuals/Hectare. Plants species that had the highest important value index at the seedling and sapling category were Caffea canephora. While for pole category is Tabernaemontana sphaerocarpa Blums and thee category Swietenia macophyla King. Species diversity index for seedling, sapling and tree categories was moderate, while pole category was low.
Co-Authors Abdul Muhyi Abidin Agil Al Idrus Agil Al Idrus Agus Ramdani Ahmad Raksun Ahmad Raksun Ahmad Raksun Anggi Yuni Anggraeni Aulia Vina Rahmani Baiq Sri Handayani Cahayatul Aulia Didik Santoso I Putu Aryatasa I Wayan Merta Intan Mushlihah Joni Rokhmat Joni Rokhmat Khaerus Syahidi Kurniawan Arizona Lale Yaqutunnafis Lalu Japa Lalu Zulkifli M. Sarjan M. Yamin M. Zulmuhibban Mahrus Mahrus Mega Safitri Moh. Liwa Ilhamdi Mohammad Liwa Ilhamdi Muhammad Sarjan Muhlis Muhlis Nindi Claudia Nisratul Apriyani Novia Indra Anggraini Nur Hayati Nurjariati Fadilah Nurkomariah Nurkomariah Nurul Ahadia Nurul Fadhilah Prapti Sedijani Prapti Sedijani Ramdhani Sucilestari Reni Anggraini Reza Wariani Rini Andriani Ririn Widiawati Salkiah, Baiq Septiani Ayda Suhaeri Ihwani Suniyanti Suniyanti Syachruddin AR Syahrial A Syamsuddin Syamsuddin Syamsul Bahri Syamsul Bahri Tri Ayu Lestari Widya Anggreni Yuyun Ningsiati