BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains

Pengaruh Penambahan Sari Kurma Terhadap Kualitas dan Aktivitas Antimikroba pada Dadih

2024-01-27T04:09:11+00:00

This research aims to determine the additional concentration of date palm juice which can influence the quality of curd in terms of total LAB, pH value, antimicrobial activity and organoleptic characteristics including color, texture, aroma and taste. This research design used a Completely Randomized Design using 100ml of buffalo milk added with date juice, consisting of 4 treatments, namely P0 (without adding date juice), P1 (10%), P2 (15%), and P3 (20%). Research data was analyzed using ANOVA and Tukey's advanced test if there were differences in influence. The research results showed that Treatment P1 (10%) produced curd with the best characteristics in terms of total BAL 8.60×1011 CFU/ml, pH value 4.45, irradical inhibition zone formed with a diameter of 9.35 mm against Sterptococcus mutans. Meanwhile, in the organoleptic test, treatment P3 (20%) was the best curd chosen by the panelists including aroma 4.60 (liked very much), color 4.16 (liked very much), taste 4.40 (liked very much). However, in terms of texture, the panelists liked the curd treatment P0 (without adding date juice) 4.00 (liked). In conclusion, curd with the addition of date juice had a significantly different effect on total BAL, pH value, antimicrobial activity on Streptococcus mutans, aroma, texture and taste. However, there was no significant difference in color and antimicrobial activity for Candida albicans.

Keywords: BAL, Curd, Dates

Pengaruh Pemberian Variasi Konsentrasi Vitamin B1 (Thiamin HCl) Terhadap Pertumbuhan Fase Vegetatif Anggrek Dendrobium sonia

2024-02-13T23:05:04+00:00

This study aims to determine the effect of varying concentrations of vitamin B1 on the growth of the vegetative phase of the Dendrobium sonia orchid. This research was carried out experimentally using a Completely Randomized Design (CRD) with 4 treatment levels, namely Growmore Fertilizer (2 gr/l) as a control and vitamin B1 concentration (1 ml/l, 2 ml/l, 3 ml/l) then each -Each treatment was repeated 5 times to get 20 plants, each treatment consisting of 5 plant samples. The parameters used are root length, number of new roots, shoot height and number of shoots. The data obtained was analyzed using the one way anova test. The results of the research showed that Dendrobium sonia orchids treated with varying concentrations of vitamin B1, the parameters of root length, number of shoots, shoot height and average number of shoots had vegetative growth that did not look much different. In conclusion, vitamin B1 has no significant effect on the vegetative growth of Dendrobium sonia orchids.

Keywords: Dendrobium sonia, Vegetative Phase, Vitamin B1

Perbandingan Kualitas Pot Hitam dan Softpot Terhadap Pertumbuhan Vegetatif Anggrek Dendrobium sonia ersakul

2024-02-22T03:11:51+00:00

The aim of this research is to compare the quality of black pots and soft pots on the vegetative growth of the Dendrobium sonia ersakul orchid. The method used was perfect randomization with one treatment, namely black pot and soft pot. Data analysis used a two-way t-test at the 5% level. The results of the research show that using different types of pots can make a real difference to the parameters of plant height, length of shoots and number of new roots, but does not make a real difference to root length. The difference in the quality of the two pots is influenced by the level of water supply to the plant, plant drainage, and the level of oxygen absorption in the roots.

Keywords: Dendrobium Orchid, Vegetative Growth, Black Pot, Softpot

Kelimpahan Foraminifera Bentonik Besar

2024-02-28T13:08:58+00:00

The aim of this research is to determine the abundance of large benthic foraminifera in the study area. This research method is descriptive quantitative. There were 4 thin section samples used in this research, these samples came from cores at a depth of (36m – 39m). The results of the research showed that from the four incisions, 7 variations of large benthonic foraminifera genera were found, including, Spiroclypeus, Alveolina, Trillina hawchini, Cycloclypeus, Miogypsina, Heterostegina, and Assilina. Analysis of the abundance of large benthic foraminifera was carried out based on identification of the presence of foramnifera in each thin section sample. It is known that the thin section sample with the highest abundance of large benthonic foraminifera was in the code section sample (38m – 39m) with a total abundance of 9 individuals, consisting of 4 different genera of large benthonic foraminifera. In conclusion, the abundance of large benthic foraminifera tends to increase with increasing core depth.

Keywords: Large Benthonic Foraminifera, Genus, Abundance, Rajamandala

Respon Pertumbuhan Vegetatif Tanaman Kedelai (Gylcine max L.) Terhadap Tingkat Naungan yang Alami

2024-02-29T02:49:45+00:00

This research aims to determine the most effective growth response and shade level for vegetative growth of soybeans (Glycine max L.). The experimental design used was a Completely Randomized Design (CRD). ) with 2 factorials, namely factor I, namely N0: Control; N1 : 55%; N2: 65%; N3: 75%; and factor II, namely M1: soil + husks; M2: soil + cocopeat. The results showed that 55% shade (N1) had a significant effect on plant height and number of leaves, 75% shade (N3) had a significant effect on leaf area index, M2 (soil + cocopeat) had a significant effect on plant height, number of leaves and area index. leaf. In conclusion, the growth response of soybean plants to natural shade shows significant growth in plant height, number of leaves, leaf area index and level of shade. The most effective is N1 which has a significant effect on plant height and number of leaves. Apart from that, there are recommendations for choosing a more appropriate media for soybean plants so that their growth and development is more realistic.

Keywords: Gylcine max L., Soybeans, Cultivars, Shade, Growth

Optimasi Pertumbuhan Anggrek Dendrobium sp. Fase Seedling dengan Pemberian Variasi Dosis Pupuk

2024-03-11T12:28:42+00:00

This research aimed to find out what variations in fertilizer doses are optimal to stimulate the growth of orchids in the seedling phase. The method used was a Completely Randomized Design (CRD) method with one factor, namely the concentration of Grow More leaf fertilizer with 3 treatments and 5 replications. The treatments given were fertilizer concentrations of 0.2 g/200 mL, 0.4 g/200 mL, and 0.6 g/200 mL. The data obtained were analyzed using Anova analysis with an accuracy of 0.05. The research results showed that variations in fertilizer doses had no significant effect on the research parameters of plant height, new shoot height and new root length. Meanwhile, it has a real effect on the parameters of the number of new roots. In conclusion, a fertilizer concentration of 0.6 g/ 200 mL is the optimal concentration for the growth of the number of new roots of Dendrobium orchids in the seedling phase.

Keywords: Orchid, Dendrobium, Fertilizer Dosage, Seedling Phase

Pemanfaatan Sumber Daya Alam Kabupaten Lebong: Sumber Daya Pangan Rebung Bambu sebagai Bahan Baku Utama Pembuatan Lemea (Makanan Tradisional Kabupaten Lebong)

2024-03-13T04:03:14+00:00

This research aimed to determine the use of natural resources as food in Lebong Regency which can later be used as a learning resource for students in science learning. This research uses a survey method conducted in Lebong Regency, Bengkulu Province. The data collection technique used was interviews with the people of Lebong Regency and the Central Statistics Agency (BPS) of Lebong Regency regarding natural resources and their use. Data obtained from interviews were analyzed descriptively. The results of the research show that the people of Lebong Regency utilize natural resources, namely bamboo which is used as the main raw material in making lemea (a traditional food of the Rejang Tribe in Lebong Regency). The bamboo used in the process of making Lemea is a type of ship bamboo. The part of bamboo used in the process of making Lemea is bamboo shoots (young bamboo shoots). Lemea is a typical food of the Rejang tribe in Bengkulu Province where the main ingredient of lemea is chopped fermented bamboo shoots (young bamboo). The ingredients for the lemea mixture vary from region to region, some use river fish, red chilies, bay leaves and lemongrass. The science content that students can learn in this Lemea product is fermentation in biotechnology material.

Keywords: Bamboo, Lebong, Lemea, Bamboo Shoots, Natural Resources

Studi Keragaman dan Habitat Gastropoda di Daerah Litoral Muara Sungai Ketahun Bengkulu Utara

2024-03-25T07:42:18+00:00

This research aims to identify the abundance, diversity, dominance and evenness of gastropods at the mouth of the Ketahun River, North Bengkulu. The method used is the "purposive" method. The sampling location was divided into 4 (four) stations, namely in the tidal area and on the right and left in the downstream part of the estuary. The sampling technique uses transects, at each station measuring 20m. Gastropod data analysis uses the Shannon Wiener index, Simpson index, and Pielou index. The research results showed that at the mouth of the Ketahun river, 18 species of gastropods were obtained consisting of 7 genera and 3 families. The diversity index shows, a) station I has an index value of 1.81 (medium category); b) station II has an index value of 0.49 (low category); c) station III has an index value of 1.89 (medium category); d) station IV has an index value of 0.82 (low category). The dominance index shows, a) station I has an index value of 0.23 (low category); b) station II has an index value of 0.70 (medium category); c) station III has an index value of 0.19 (low category); d) station IV has an index value of 0.63 (medium category). The evenness index shows, a) station I has an index value of 0.62 (high category); b) station II has an index value of 0.17 (small category); c) station III has an index value of 0.65 (high category); d) station IV has an index value of 0.28 (small category). The most common gastropod found is the genus Clithon with a total of 1369 individuals. Abundance, diversity, dominance and evenness are determined by abiotic parameters and environmental conditions such as substrate and water quality.

Keywords: Bengkulu, Gastropods, Ketahun River

Uji Kuantitas Kadar Antioksidan dan Kandungan Vitamin C Kombucha Secang (Caesalpinia sappan L.) dengan Pemanis Stevia berdasarkan Variasi Lama Fermentasi

2024-03-26T08:09:08+00:00

This study aimed to determine the antioxidant levels and vitamin C content of secang kombucha with stevia sweetener based on variations in fermentation time. This research used experimental methods and a Completely Randomized Design with 1 factor, namely fermentation time of 11 days and 13 days with 3 replications each. Data analysis uses quantitative descriptive methods. The results of the research showed that the antioxidant content of secang wood kombucha with stevia sweetener was the highest in the 13 day fermentation treatment, namely 79.14%. Meanwhile, the highest vitamin C content of secang wood kombucha with stevia sweetener was in the 13 day long fermentation treatment, namely 39.14 mg/100g.

Keywords: Antioxidants, Fermentation, Kombucha, Secang, Vitamin C

Pengaruh Pakan Limbah Jeroan Ikan Nila dan Limbah Tomat Terhadap Pertumbuhan serta Kadar Protein Maggot BSF (Hermetia illucens)

2024-04-08T12:50:13+00:00

This research aims to analyze the effect of tilapia offal waste and tomato waste on the growth and protein levels of BSF maggots. This research analyzes the ratio of mass, length and thickness as well as the protein content of maggots on the influence of the feed used. This research used a Completely Randomized Design (CRD) consisting of 5 treatments with 3 repetitions. The results showed that the P1 100% fish treatment was the best variation for mass, namely 0.27. Treatment P1 100% fish is the best variation for length, namely 22.40. Treatment P1 100% fish and P2 75% fish and 25% tomatoes is the best variation for thickness, namely 5.85, and Treatment P4 25% fish and 75% tomatoes is the best variation for protein content, namely 22.01%. In conclusion, feeding fish waste and tomato waste on growth and protein content in BSF maggots affects mass, length, thickness and protein content.

Keywords: Protein Content, Fish Offal Waste, Maggot, Tomato

Kriopreservasi Sperma Manusia: Systematic Review

2024-04-19T23:18:59+00:00

This study aims to identify the types of methods and effects of human sperm cryopreservation. This review was written using a literature review method from international databases such as Scopus and PubMed. The results of the research show that by choosing a cryopreservation method, choosing a cryoprotectant agent such as TAT-PRDX2, canthaxanthin, or Holotheria parva coleomic extract, can increase sperm motility, viability and integrity after cryopreservation, the right cryoprotectant agent can defend cells from oxidative stress and fragmentation DNA.

Keywords: Cryopreservation, Human, Sperm

Keragaman Tumbuhan Pakan Burung Cenderawasih di Hutan Kampung Rhepang Muaif Kabupaten Jayapura

2024-05-02T08:46:40+00:00

The aim of this research is to carry out a vegetation analysis looking at the types of plants at the seedling, sapling, pole and tree level which have the potential to serve as food for birds of paradise. The plotted line method is a measuring tool used to collect vegetation data at the seedling, sapling, pole and tree level. The data obtained is then analyzed to determine Density, Relative Density, Dominance, Relative Dominance, Frequency, Relative Frequency, Importance Value Index and Diversity Index. The research results showed that 5 types of food sources were obtained, namely Palaquium amboinense, Gnetum gnemon, Pometia acuminata and Syzygium sp. The structure and composition of vegetation at the seedling level consists of 21 species with H' (2.74) or medium, the sapling level consists of 34 species with H' (3.16), the pole level 27 species with H' (2.83), tree level 38 species with H' (3.06).

Keywords: Bird of Paradise, Food, Muaif Rhepang, Vegetation

Efektivitas Biolarvasida Kombinasi Ekstrak Daun Sirsak (Annona muricata) dan Bunga Marigold (Tagetes erecta L.) sebagai Pembasmi Jentik Nyamuk

2024-05-16T01:15:39+00:00

This research aims to determine the effectiveness of using a biolarvicide combination of soursop leaf extract and marigold flowers as an exterminator for mosquito larvae. This research included a laboratory experiment using a completely randomized 2 factorial design. The first factor is a combination of soursop leaf extract and marigold flowers, namely, a) 75%:25% (F1); b) 50%:50% (F2); c) 25%:75% (F3). The second factor is the treatment dose, namely, a) 1% (D1); b) 2% (D2); c) 2.5% (D3). Each factor was repeated 3 times. Data analysis uses a non-parametric test, namely Kruskal-Wallist. The results of the study showed that the soursop leaf and marigold flower extract formula 75%:25% was most effective against mosquito larvae mortality at a dose of 2.5% within an observation period of 6 hours. In conclusion, soursop leaf and marigold flower extracts are effective mosquito larva repellents.

Keywords: Biolarvicide, Marigold Flowers, Soursop Leaves, Effectiveness, Mosquito Larvae

Pemanfaatan Kulit Pisang Kepok Kuning (Musa acuminata balbisiana) sebagai Bahan Baku Bioetanol Konteks Teknologi Ramah Lingkungan

2024-05-16T14:29:35+00:00

This research aims to determine the optimal composition and fermentation time by varying the starter used to make bioethanol. The method used was an experiment with 45 samples of yellow kepok banana peel which were fermented for 13, 19 and 25 days. This research used 5 treatments, namely, a) composition A, namely 100% yeast (no added nutrients); b) composition B, namely 100% urea; c) composition C, namely 100% NPK; d) composition D, namely 50% urea and 50% NPK; e) composition E, namely 75% urea and 25% NPK. The quantitative data obtained was then analyzed using the average bioethanol content presented in the table. Qualitative data was analyzed descriptively with a systematic study. The results showed that the highest bioethanol content was obtained after fermentation (12.67 ± 9.29%) and after distillation (32 ± 10%) with composition A (100% yeast) and a fermentation time of 25 days. The highest combination of bioethanol yields was obtained after fermentation (6 ± 0%) and after distillation (31.67 ± 2.31%) with composition E (75% urea and 25% NPK) with a fermentation time of 25 days. In conclusion, the longer the fermentation time, the more bioethanol content increases.

Keywords: Bioethanol, Kepok Banana Peel, Environmentally Friendly Technology

Pengaruh Variasi Lama Fermentasi Kombucha Rimpang Jahe Putih dengan Pemanis Stevia Terhadap Kuantitas Kandungan Vitamin C dan Kadar Antioksidan

2024-05-19T15:36:10+00:00

This research aims to determine the effect of fermentation time on the vitamin C content and antioxidant levels in white ginger kombucha sweetened with stevia. This research used experimental methods and a Completely Randomized Design with 1 factor, namely fermentation time of 11 days and 13 days with 3 replications each. Analysis Quantitative data (vitamin C content, antioxidant levels) were analyzed using quantitative descriptive methods. Meanwhile, for qualitative data (pH, physical and biological properties) qualitative descriptive methods are used. The research results showed that the antioxidant content in the 13 day fermentation was 73.21%, while in the 11 day fermentation it was 70.50%. The vitamin C content in white ginger kombucha with stevia sweetener at 13 days of fermentation was 24.18 ml/100g and at 11 days of fermentation was 18.95 ml/100g. In conclusion, the fermentation time affects the vitamin C content and antioxidant levels. The antioxidant levels in white ginger kombucha with stevia sweetener take 13 days of fermentation compared to 11 days of fermentation.

Keywords: Antioxidants, Fermentation, White Ginger, Kombucha, Vitamin C

Pengembangan Ensiklopedia Terintegrasi Potensi Lokal Sumatera Utara Tumbuhan Balakka (Phyllanthus emblica L) sebagai Alternatif Bahan Ajar Biologi

2024-06-18T09:50:17+00:00

This research aims to determine the feasibility, practicality, and effectiveness of the encyclopedia developed on Kingdom Plantae (Plant Kingdom) material. The method used in this research is the Research and Development (R&D) method with the 4D model (Define, Design, Development, and Disseminate) from Thiagarajan. The research results show that the Encyclopedia is very feasible, practical, and effective to be used as open material for SMA/MA students. This is seen based on the assessment of experts by material experts with a percentage of 80%, media experts with a percentage of 90.9%, biology subject teachers with a percentage of 75%, practicality by students with a percentage of 90.4%, and product effectiveness seen from the Learning Completeness formula with a percentage amounting to 87.30%. Encyclopedias that are suitable for development will then be distributed to several schools, namely MAS Al-Ulum Medan and SMAS Nur Ihsan Islamic Fullday School.

Keywords: Kingdom Plantae Encyclopedia, Thiagarajan 4D Model

Skrining dan Identifikasi Bakteri Selulolitik Tempat Pemakaman Umum

2024-06-18T09:52:46+00:00

This research aims to determine the potential of cellulolytic bacteria and identify bacterial isolates originating from TPU. A total of 36 bacterial isolates that will be tested for their cellulolytic potential have been isolated from Pracimaloyo Kartasura TPU, Sukoharjo. Selection of cellulolytic bacteria used selective Carboxymethyl Cellulose (CMC) media dripping with 0.1% Congo red while identification was based on colony morphology and Gram staining. The research results showed that 8 bacterial isolates (22.22%) showed positive cellulolytic activity, namely P5, P8, P10, P14, P22, P25, P27, and P31, with a cellulolytic index value of 7.5; 5; 6.25; 7; 7, 5, 25; 7, 25; and 6.5. Cellulolytic positive isolates have shiny white colonies, entire edges, raised elevations, and are classified as Gram negative cocci. The conclusion of this research is that TPU public burial places harbor potential cellulolytic bacteria.

Keywords: Cellulolytic Bacteria, Public Cemetery (TPU), Pracimaloyo

Pengaruh Pemberian Jus Triticum aestivum L. Terhadap Kadar Gula Darah Mus musculus L. Hiperglikemia

2024-06-20T13:28:45+00:00

This study aims to examine the effect of wheatgrass juice on the blood sugar levels of M. musculus L. hyperglycemia. This research is an experimental study using a completely randomized design. This study used 25 mice for 42 days in two control groups, namely negative and positive. The positive group was given glibenclamide after sucrose induction. There were three treatments in this study, namely P1 50%, P2 75%, and P3 100%, which were taken with wheat grass juice after sucrose induction. Check blood sugar levels using Easy Touch. The data was tested by ANOVA, followed by DMRT at the five percent level. The results showed that, at the end of the experiment, T. aestivum L. juice affected M. musculus L. blood sugar hyperglycemia. The most optimal use of T. aestivum L is P3 (100%).

Keywords: Blood Sugar, Hyperglycemia, Wheat Grass Juice

Bioteknologi Kombucha Serai (Cymbopogon citratus) dengan Pemanis Stevia Berdasarkan Lama Fermentasi Terhadap Kuantitas Kandungan Vitamin C dan Kadar Antioksidan

2024-06-21T14:31:41+00:00

This research aims to determine the quantity of vitamin C content and antioxidant levels and determine the quality of the physical test of lemongrass kombucha using stevia sweetener based on fermentation time. The research methods used were quantitative and qualitative descriptive methods with experimental methods, Completely Randomized Design (CRD) using a factorial factor pattern (one factor), and three repetitions. The research results showed that lemongrass kombucha with fermentation times of 11 and 13 days both had a pH of 4. Meanwhile, the average vitamin C content of the 11-day fermentation was 21.56 (mg/100 g) from 3 repetitions and 24.66 (mg/100 g) for the 13-day fermentation. The average fermentation antioxidant content on day 11 was 84.10%, while on day 13 it was 84.70%. In conclusion, the vitamin C content and antioxidant levels increase as the fermentation process takes longer. So, the fermentation time has a significant effect on the vitamin C content and antioxidant levels, so lemongrass kombucha can be an alternative drink to replace tea drinks in general and is useful as a probiotic drink that is good for digestion.

Keywords: Antioxidants, Kombucha, Stevia Sweetener, Lemongrass, Vitamin C

Analisis Kandungan Vitamin C dan Kadar Antioksidan Teh Kombucha Daun Pandan Wangi (Pandanus amaryllifolius) dengan Pemanis Stevia Berdasarkan Lama Fermentasi

2024-06-21T23:35:35+00:00

This research aims to analyze the vitamin C content and antioxidant levels of fragrant pandan leaves with stevia sweetener based on fermentation time, so as to obtain the most optimum vitamin C content and antioxidant levels in kombucha tea. The research method is experimental research, namely by varying the fermentation time in making kombucha tea. The results of the research show that the longer the fermentation process takes to raise the pH of kombucha tea, the clearer the color of the kombucha tea is, the longer the fermentation process takes. The optimum vitamin C content was obtained on the 13th day of fermentation at 14.67 mg/100 g, and the optimum antioxidant content was also obtained on the 13th day of fermentation at 77.94%. The results obtained from physical observations include color, taste, and aroma.

Keywords: Antioxidants, Fermentation Time, Kombucha Tea, Vitamin C

Analisis Keterampilan Proses Sains Mahasiswa pada Praktikum Biologi Lingkungan Materi Bioindikator Pencemaran Air

2024-06-23T03:04:43+00:00

This research aims to understand skills in the science process in the environmental biology practicum on water pollution bioindicator material. This research method is a qualitative research method that involves descriptive analysis. The research results show that the order of indicator percentages from largest to smallest is, a) observations of 89%; b) classification of 87%; c) interpretation of 86%; d) communication of 83%; e) prediction of 78%; f) asking questions of 76%; g) hypothesizing of 69%; h) using tools and materials of 67%; i) applying the concept of 66%; j) planning an experiment of 63%. The conclusion of this research is that all PPP indicators appear in practicum.

Keywords: Biology, KPS, Practicum

Kualitas Kefir Kombinasi Susu Kacang Tunggak dan Susu Skim dengan Variasi Jenis Gula dan Lama Fermentasi

2024-06-23T03:08:26+00:00

This research aims to determine the quality (total acid content and organoleptic properties) of kefir combined with cowpea milk and skim milk with variations in sugar and fermentation time. The research used experimental methods and a completely randomized design (CRD) with two factors. Factor I is variations in the type of sugar (G), granulated sugar, and ant sugar. Factor II is the variation in fermentation time (L) between 36 hours and 48 hours. The results of the research showed that the best total acid content of kefir combined with cowpea milk and skim milk was 0.96%, pH 3.5, in the G1L1 treatment (granulated sugar + 36-hour fermentation time). The best organoleptic quality of kefir was in the G1L1 treatment (granulated sugar + fermentation time of 36 hours), with a pleasant aroma, sour taste, less viscousness, and a white color.

Keywords: Cowpea, Kefir, Organoleptic, Skim Milk, Total Acid

Efektivitas Pupuk Organik Cair Limbah Jerami Padi dan Batang Pisang Terhadap Pertumbuhan dan Kandungan Fosfor Tanaman Sawi Hijau (Brassica juncea L.)

2024-06-28T22:12:59+00:00

The research aims to determine the effectiveness of the growth and phosphorus (P) content of green mustard plants (Brassica juncea L.) after administering POC from rice straw waste and banana stems at different time intervals and doses. The research method used was an experiment with a Completely Randomized Design (CRD) type of two factors, including the dose of liquid organic fertilizer (D1 = 10 ml and D2 = 13 ml) and the time interval for fertilizer application (I1 = once 5 days and I2 = once 7 days) and 3 repetitions. The results were analyzed using a two-way ANOVA with a significance level of 0.05. The results showed that the treatment given had a significant effect on the growth of plant height, wet weight, root length, and phosphorus content but had no significant effect on the growth of the number of leaves. I1D1 treatment (5 day interval, dose of 10 ml) is the best treatment for plant growth and phosphorus content of green mustard greens (Brassica junea L.).

Keywords: Mustard Greens, Rice Straw, Banana Stems, Liquid Organic Fertilizer, Growth, Phosphorus

Pengembangan E-Modul Berbasis Stem pada Materi Genetika

2024-06-28T22:38:15+00:00

This study aims to develop stem-based e-modules on genetic material in an effort to improve the quality of biology learning. The research method used is Research and Development (R&D) with a 4D development model. The results showed that the stem-based e-module in genetics had gone through the validation process by material experts and media experts, with the percentage of validity and materials of 95%, the ability and contextualization of 87.5%, and a score of 100% for appearance and programming and 97.2% for presentation from media experts. This e-module is considered very practical based on the assessment of teachers and students in small and large-scale trials, with a percentage of practicality of 94.23% for the teacher, 76.538% for small scale students, and 78.32% for large scale students. The implementation of e-modules in biological learning is also proven to be quite effective, with a percentage of effectiveness of 58.46% and the N-Gain value of 0.58, which is included in the medium category. The conclusion is that the development of stem-based e-modules in genetic material is an effective innovation in improving the quality of biology learning, providing interactive learning experiences, encouraging students to be more active in the learning process, and increasing students' understanding of genetic material.

Keywords: E-Modules, Genetics, Stem, 4D

Pengembangan Media Pembelajaran Augmented Reality Berbasis Lingkungan Sekitar Cekdam di Desa Tugu Sempurna untuk Siswa SMA

2024-06-28T22:47:52+00:00

This research aims to determine the design of developing augmented reality learning media based on the environment around the check dam in Tugu Perfect Village for high school students and to determine the feasibility of developing augmented reality learning media based on the environment around the check dam in Tugu Perfect Village for high school students in terms of validity and practicality. This research was carried out at Tugu Perfect State High School and in the environment around the check dam in Tugu Perfect Village. The research model used by ADDIE, however, has only reached the implementation stage. The test subjects for this research were validators, educators, and students. The data collection technique in this research uses media validity analysis, language, material, and media practicality analysis. The data collection instruments used by researchers were interview sheets, questionnaires, and observations. The research results showed that the average value of the one to one test was 88.73%, the small group test was 90.35%, and the field test was 74.06%. In conclusion, augmented reality learning media can increase student participants' learning motivation.

Keywords: Augmented reality, Learning Motivation, Development

Efektivitas Pupuk Organik Cair Jerami Padi dan Ampas Teh Terhadap Pertumbuhan dan Kandungan Kalsium Tanaman Selada (Lactuca sativa L.)

2024-06-28T23:05:45+00:00

This research aims to determine differences in growth and calcium levels of lettuce plants ( Lactuca sativa L.) after applying liquid organic fertilizer from rice straw and tea dregs. This research used an experimental method with a Completely Randomized Design (CRD) with 3 replications and two factors, namely the dose of liquid organic fertilizer (P₁ = 10 ml and P₂ = 13 ml) and the time of application of liquid organic fertilizer (W₁ = once every 5 days and W₂ = every 7 days). The results of the research showed that all treatments had different effects on the growth and levels of lettuce plants. The treatment that has the most influence on the growth and calcium levels of lettuce plants is P₂W₂ (13 ml fertilizer dose and application time every 7 days).

Keywords: Tea dregs, rice straw, calcium, lettuce plants, liquid organic fertilizer