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Proceeding of International Conference on Biology Education, Natural Science, and Technology
Published by Universitas Muhammadiyah Surakarta
ISSN : 30265428     EISSN : 30265428     DOI : https://proceedings.ums.ac.id/index.php/incobest
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Education Physics
International Conference on Biology Education, Natural Science, and Technology is a prestigious global conference that brings together researchers, educators, practitioners, and policymakers to facilitate the exchange of ideas and the sharing of best practices in biology education, natural science, and technology.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 128 Documents
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Quality of Liquid Organic Fertilizer Combination Gamal Leaves and Tofu Dregs with Banana Stem Bioactivator Istifarini, Feby; Asngad, Aminah
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2023: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Liquid organic fertilizer is an effective solution to inorganic fertilizers. Gamal leaves and tofu dregs can be used to make fertilizer and banana stem bioactivator to speed up fermentation. The study aim to determine the quality of liquid organic fertilizer (LOF) from the combination of gamal leaves and tofu dregs with the banana stem bioactivators based on sensory properties parameters and N, P, K content. This research method used experimental method with a completely randomized design (CRD). It consists of two factors, As for factor 1, namely the combination of gamal leaves and tofu dregs, P1 = 100 ml : 200 ml, P2 = 120 ml : 180 ml. Factor 2 is banana stem bioactivator, B1 = 100 ml, B2 = 150 ml. Data analysis used descriptive qualitative and quantitative statistics used Two Way ANOVA. In observing the sensory indicators, the average fertilizer yield had a dark brown color, scent like soil, and a pH of 5. Meanwhile, in the content test, only the N content met SNI 19-7030-2004. Thus, it can be concluded that the quality of fertilizer can be used as fertilizer but the color parameters, P and K content do not meet the standards.
The Effects of Socio-Scientific Approach on Junior High School Students' Learning Outcomes Rahmadhani, Salsabila Nur; Agustina, Putri; Mulyani, Sri
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2023: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

In learning students are expected to get success in learning. One of the factors that can influence the success of student learning is the selection of appropriate learning approaches. The Socio-scientific Issue learning approach is a learning approach that examines facts on an event based on social issues related to science in society. The purpose of this research is to find out and examine the effect of the socio-scientific issue learning approach on junior high school student learning outcomes. This type of research is quasi-experimental with quantitative data and processed using non-parametric statistical data analysis techniques to determine the effect of treatment on the dependent variable by controlling the independent variables. In this study. the results showed that the initial ability of the two groups was 31.8 for the control class and 21.8 for the experimental class. After the experimental class received learning using the Socio-scientific Issue approach. it obtained a better average score than the control class. namely 80.9 for the experimental class and 58.8 for the control class. Based on data analysis and discussion. it can be concluded that the Socio-scientific Issue approach has a significant effect on student learning outcomes.
Study of Science Practicum in Junior High School, Sukoharjo, Indonesia Sarah, Farikha Muya; Agustina, Putri; Hastowati, Harini
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2023: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Practicum or experiments in the laboratory are needed to support science learning activities. According to Permendiknas Number 24 of 2007 the educational process requires supporting facilities and equipment so that the learning process can run optimally. In the implementation of science practicum, there are benefits, including arousing motivation to learn science and giving students the opportunity to satisfy their curiosity, as a source of learning a scientific approach. The purpose of this study was to determine the quality of facilities and infrastructure, as well as the implementation of science practicum in research junior high schools. The type of research used is descriptive qualitative with data collection techniques using observation, documentation, interviews, and questionnaires. The results showed that the quality of science laboratory facilities and infrastructure in junior high schools was included in the good category as stated in Permendiknas Number 24 of 2007 is evidenced by an average percentage of 77.42%. The implementation of science practicum is in a very good category where the average percentage obtained is 89.25%. The results of the questionnaire showed that the average percentage of science practicum implementation was 65.8% in the good category, in the sense that the implementation of science practicum class IX in the even semester went well.
Quality of Kefir Combination Between Soy Milk and Skim Milk On Variation of Sugar and Fermentation Duration Uswatiningtyas, Masithoh; Suryani, Titik
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2023: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Kefir is one of the functional beverages that has an acidic taste due to the activity of lactic acid during the fermentation process. One of the ingredient innovations for kefir was soy milk, skim milk and variations of sugar types. Soy milk protein has an amino acid structure similar to cow's milk, so it is very good for people with lactose intolerance. The aim of this study is to know the quality (total of lactic acid and the organoleptic quality) of the kefir combination between soy milk and skim milk on the variation of sugar and fermentation duration. The study used experimental methods and complete random design (CRD) with two factors. Factor I was the sugar variation (N) palm sugar and white sugar. Factor II was the variation of fermentation duration (K) 24 hours, 36 hours, and 48 hours. The results of the study showed that the lowest lactic acid of kefir combination between soy milk and skim milk was 0.896 % on N2K1 treatment (white sugar + 24-hour fermentation duration). The best organoleptic quality of kefir combination between soy milk and skim milk was N2K1 white sugar + 24-hour fermentation duration) in white color, sour taste, and soft texture.
Coconut Husks and Eggshells Liquid Organic Fertilizer's Effect on The Growth and Calcium Levels of Kale Susetyawati, Nabila Junisky; Asngad, Aminah
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2023: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Kale (Brassica oleracea var. achepala) is an essential vegetable for human development due to its calcium levels. Lack of hares in the soil is the cause of the decline in kale production. The purpose of this study was to test eggshell and coconut husk liquid organic fertilizers for kale plant growth and calcium levels. The research was conducted at the green house of Biology Education, FKIP UMS. Liquid organic fertilizer dosage (P1 = 100 ml and P2 = 150 ml ) and time intervals (W1 = 3 days once and W2 = 5 days once) were tracked using the completely randomized design (RAL) with control treatment as comparison and 3 times replication. Data was analyzed using two-way ANOVA. The plant height, number of leaves, fresh weight, and calcium levels are the variables that were observed. The study revealed that P2W2 treatment had the highest development rate, with average number of leaves of 14 strands, growth height of 13.3 cm, fresh weight of 51.5 g, and calcium levels of 0.141%. Based on the results of the research, it was shown that coconut husks and eggshell liquid organic fertilizer are effective on the growth and increase calcium levels of kale.
Phosphate Solubilisation Index and Antagonism Potential of Frangipani Tree Rhizosphere Bacterial Isolates from Cemetery Febriyanti, Vika; Tyastuti, Erma Musbita; Sidiq, Yasir; Rahayu, Triastuti
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2023: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Frangipani trees (Plumeria acuminata) are commonly found in cemeteries. Cemeteries are used as a location for interment so that the corpse actively decomposes to provide soil minerals that encourage the formation of microbes, including bacteria. Bacteria around the roots of frangipani trees are thought to have potential as plant growth-promoting rhizobacteria (PGPR). Based on reference searches, there has been no research on frangipani tree rhizosphere bacteria from burial grounds. The aim of this study was to investigate the phosphate-dissolving and blast disease-causing Pyricularia oryzae fungus-inhibiting properties of frangipani tree rhizosphere bacteria from Pracimaloyo cemetery, Surakarta. A total of 39 isolates of frangipani tree rhizosphere bacteria were tested for their ability to dissolve phosphates using PKA media (Pikovskaya), while the antagonism test against the fungal pathogen Pyricularia oryzae used the dual assay method. The results of the study showed that 15% of the rhizosphere bacteria of the frangipani tree were able to dissolve phosphate, and 33% of the isolates were able to inhibit the growth of the fungus Pyricularia oryzae with an inhibitory power of more than 40%. Based on the results, the rhizosphere bacterial isolates from Pracimaloyo TPU show the characteristics of a possible PGPR.
Coconut Husk And Eggshell Liquid Organic Feltilizer Effect On Lettuce Growth And Calcium Levels Khotimah, Widya Husnul; Asngad, Aminah
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2023: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Coconut husks and eggshells are common wastes found in society, but they are used less, so they often accumulate. Liquid organic fertilizer (POC) is a solution formed from plant residues, agro-industrial waste, animal dirt, and human dirt that has a content of more than one element. This research aims to find out the effectiveness of the supply of liquid organic fertilizer from coconut seeds and egg shells against the increase in calcium (Ca) and the growth of lettuce plants (Lactuca sativa l). The research was conducted at FKIP Muhammadiyah University of Surakarta’s Green House Education Biology from January–April 2023. The study used the complete random design (RAL) method of 3 repetitions and two factors: the POC administration concentration used P0 (POC 0 ml), P1 (POC 100 mL), and P2 (POC 150 mL), and the time interval for POC W1 (once every 3 days), and W2 (once every 5 days). The results of the research showed that the highest growth and increase in calcium being seen with the treatmentof P2W2 (150 ml POC and once every 5 days).
Quality Of Kirinyuh Leaf Liquid Organic Fertilizer and Coconut Water Waste With Pineapple Skin Bioactivator Nitami, Arisa Putri Jihan; Asngad, Aminah
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2023: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Liquid organic fertilizer is liquid fertilizer so that plants can absorb it more easily. Liquid organic fertilizer can overcome problems arising from using inorganic fertilizers in the long term. This study aims to determine the quality of liquid organic fertilizer from kirinyuh leaves and coconut water waste by adding pineapple peel as a bioactivator. This study used the experimental method and utterly randomized design consisting of 2 factors with four combinations and three repetitions, namely factor 1 (K): a combination of the essential ingredients of kirinyuh leaves and coconut water waste (K 1: 168 ml: 82 ml & K 2: 82 ml: 168 ml). Factor II (M): Add MOL of pineapple skin (M 1: 100 ml and M 2: 150 ml). The parameters used were sensory tests regarding color, odor, pH and nitrogen, phosphorus, and potassium content. This study uses data analysis: descriptive qualitative, and quantitative. The results showed that liquid organic fertilizer has a greenish-brown color, does not have a solid fermented odor (like tape) and some have an unpleasant odor, and has a pH of 4.00 – 4.67. Based on the POC content test, only three treatments met the quality standards of SNI 19-7030-2004 for nitrogen content, namely K1M1, K1M2, and K2M1.
Isolation and Characterization of Cellulolytic Bacteria from Bonoloyo, Cemetery Risnasari, Wanda Datik; Tyastuti, Erma Musbita; Sidiq, Yasir; Rahayu, Triastuti
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2023: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

A public cemetery (TPU) is land provided by the government to bury bodies. The culture of funerals in Indonesia is varied but generally involves being buried in the soil with wrapped clothes, covered wooden boards, and tombs. The material contains cellulose that will be broken down by cellulolytic microorganisms, including bacteria. The exploration of the cellulolytic bacteria of TPU in Indonesia has not been carried out, so this study aims to investigate and identify cellulose bacteria isolates from TPU. This research is a non-experimental study for the isolation of bacteria in the soil of TPU Bonoloyo, Surakarta. A selection of cellulite bacteria is grown in CMC media. Isolates that show cellulolytic activity are identified by observing colonial morphology and Gram coloring. Selection results of cellulolytic bacteria obtained isolates with cellulolytic index (IS) including a high category of 1 isolate (B14), a medium category of 3 isolates (B16, B27, and B45), and 9 low category isolates. The study concluded that 28.8 % showed cellulolytic activity with irregular morphological forms of white dyeing on flat surfaces with flat edges and dominated by gram-negative coccyx-shaped.
Application of Project Based Learning Model to Improve Critical Thinking Skills of Students SMA Muhammadiyah 1 Sragen Purwanti, Tasya Cahya Dwi; Astuti, Rina
Proceeding of International Conference on Biology Education, Natural Science, and Technology 2023: Proceeding of International Conference on Biology Education, Natural Science, and Technology
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The goal of education is to develop each person's potential and competence so they can become good people. This study uses the Project Based Learning (PjBL) instructional model to enhance students' critical thinking abilities. Research types Qualitative description with a one-group pretest-posttest design that is pre-experimental in nature. 29 students make up the sample in this study. Tests and documentation are the tools used to obtain research data. The average posttest scores on each measure of the capacity to think critically have improved, according to the data. It is clear from the t-test findings that there is a significant difference between the pretest and posttest scores because the result was 0.000 ˂ 0.05. The use of the Project Based Learning (PjBL) learning model in class X SMA Muhammadiyah 1 Sragen resulted in a boost in students' critical thinking abilities.

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