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All Journal Bioscience Jurnal Pendidikan Biologi Martabe : Jurnal Pengabdian Kepada Masyarakat Edumaspul: Jurnal Pendidikan Eksakta : Berkala Ilmiah Bidang MIPA Pelita Eksakta Jurnal METAEDUKASI Tropical Genetics Symbiotic: Journal of Biological Education and Science Jurnal Serambi Biologi

Violita Violita

UNIVERSITAS NEGERI PADANG

Author-ID : 2568152

Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

Published : 23 Documents Claim Missing Document

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Leaf Area and Stomata Index of Rice Plants (Oryza sativa L.) Cisokan and Batang Piaman Varieties to Drought Stress Putri Widianti; Violita Violita; Moralita Chatri
Bioscience Vol 1, No 2 (2017): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Background and objective.The response of rice plants to drought stress was preceded by physiological response in the form of reduction of transpiration rate to reduce water loss by closing stomata, reducing stomata, and decreasing leaf surface area by leaf rolling. Therefore, it is necessary to research the morphological character and physiological character of plants such as leaf area analysis and stomata index to find out their response to drought stress and without drought. Based on this, this research is aimed to know the area and index of stemata leaves of rice plants (Oryza sativa L.) varieties of Cisokan and Batang Piaman due to drought stress.Methodology. Drought treatment was performed by withholding water for 12 days in greenhouse.Data were taken destructively on days 0, 4, 6 and 12 after treatment. Result. Drought stress had an effect on decreasing leaf area and stomata index on both varieties. The lowest leaf area is found in Cisokan variety. Likewise with the stomata index, the lowest yield after 12 days of treatment was found in the Cisokan variety. Low leaf area and stomatal index are known to be more resistant to drought because they can reduce the rate of transpiration in plants. Keywords: Drouhgt stress, Leaf Area, Stomata index

The Effect Of Sargassum sp. Liquid Organic Fertilizer In The Growth of Spinach Plant (Amaranthus hybridus L.) by Using Hydroponic Syifa Fajrisani; Violita Violita; Irma Leilani Eka Putri; Des Des M
Bioscience Vol 4, No 2 (2020): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/0202042101106-0-00

Abstract. The purpose of this research to determined the effect of Sargassum sp. liquid organic fertilizer in the growth of spinach plant (Amaranthus hybridus L.) using hydroponic. This research used Completely Randomized Design with six treatments and four repetitions ie: A= comparison (AB mix 10 mL/L of water), B= liquid organic fertilizer 6 mL/L of water, C= liquid organic fertilizer 8 mL/L of water, D= liquid organic fertilizer 10 mL/L of water, E= liquid organic fertilizer 12 mL/L of water, and F= liquid organic fertilizer 14 mL/L of water. Parameter observed was height of plants, number of leaves, leaf surface area, fresh weight of plants, and dry weight of plants. Data was analyzed by using the Analysis of Variants (ANOVA) and Duncan. The result showed that application of Sargassum sp. liquid organic fertilizer has been an effect on height of plants, number of leaves, leaf area, fresh weight of plants, and dry weight of spinach plant (Amaranthus hybridus L.). However, the effect was not as expected to increase the growth of spinach plant.

Utilization of liquid organic fertilizer coffee (Coffea arabica L.) as a hydroponic nutrition in pakcoy (Brassica rapa L.) Ayu Adelia; Violita Violita
Bioscience Vol 6, No 1 (2022): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/0202261109141-0-00

Pakcoy (Brassica rapa L.) is a type of vegetable plant that belongs to the Brassicaceae family. Content contained in Pakcoy are calories, protein, fat, carbohydrates, fiber, Ca, P, Fe, vitamins A, vitamins B and vitamins C. The high demand for vegetables, especially Pakcoy, is not matched by the extent of agricultural land for farming. One of the solutions that can be used for the cultivation of Pakcoy plants is hydroponically which does not require a large area of land, can also be done in the yard or terrace of the house. Coffe grounds can be used as organic fertilizer in a hydroponic system and can be an alternative that can be used to replace inorganic fertilizers. This study uses a CRD (Completely Randomized Design) with treatments consisting of 5 levels: A1B1 (1 dose AB Mix), A2B2 (½ dose AB Mix+5 mL liquid organic fertilizer coffe grounds), (½ dosis AB Mix+10 mL liquid organic fertilizer coffe grounds), (5 mL liquid organic fertilizer coffe grounds) and (10 mL liquid organic fertilizer coffe grounds). The result showed that the provision of hydroponic nutrients of coffe grounds\had an effect on the growth of Pakcoy, but the growth was lower than that of AB Mix.Pakcoy (Brassica rapa L.) merupakan salah satu jenis tanaman sayuran yang termasuk dalam famili Brassicaceae. Kandungan yang terkandung di dalam pakcoy adalah kalori, protein, lemak, karbohidrat, serat, Ca, P, Fe, vitamin A, vitamin B dan vitamin C. Tingginya permintaan sayuran khususnya pakcoy tidak diimbangi dengan luasnya lahan pertanian untuk bercocok tanam. Salah satu solusi yang bisa digunakan untuk budidaya tanaman pakcoy adalah secara hidroponik yang tidak membutuhkan lahan yang luas, bisa juga dilakukan di pekarangan atau teras rumah. Ampas kopi dapat digunakan sebagai pupuk organik dalam sistem hidroponik dan dapat menjadi alternatif yang dapat digunakan untuk menggantikan pupuk anorganik. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan perlakuan yang terdiri dari 5 taraf : A1B1 (1 dosis AB Mix), A2B2 (½ dosis AB Mix+5 mL pupuk organik cair ampas kopi), (½ dosis AB Mix+10 mL cair pupuk organik ampas kopi), (5 mL pupuk organik cair ampas kopi) dan (10 mL pupuk organik cair ampas kopi). Hasil penelitian menunjukkan bahwa pemberian nutrisi hidroponik ampas kopi berpengaruh terhadap pertumbuhan Pakcoy, namun pertumbuhannya lebih rendah dibandingkan dengan AB Mix.

Training Simple Analysis For Lake Water Pollution For The Nagari Community Of Kampung Batu Dalam Solok District, West Sumatra Yusni Atifah; Violita Violita; Afifatul Achyar; Irma Leilani Eka Putri
Pelita Eksakta Vol 4 No 2 (2021): Pelita Eksakta Vol. 4 No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol4-iss2/158

The Nagari community of Kampung Batu Dalam as a community that lives around Lake Talang is a community that will get a direct impact from the existence of Lake Talang as a tourist destination in Solok City. In order to prepare for the Tourism Village, Nagari Kampung Batu Dalam needs to be equipped with knowledge and skills that will be useful for the Nagari Kampung community. Therefore, it is necessary to provide assistance to the people of Nagari Kampung Batu Dalam to increase public knowledge regarding pollution of lake waters, the impact of pollution and how to simply detect the presence of pollution in the lake. This activity was carried out in September 2021, and was attended by 15 participants from 10 youths representing the Batu Dalam community and 5 students from SMAN Batu Dalam. The results of the activity evaluation showed an increase in the knowledge of the Batu community regarding the conservation of Talang Lake and an increase in community skills in detecting simply the presence of pollution in Talang Lake water. In conclusion, this activity has been effectively carried out and can help the Batu Dalam community as an initial preparation towards Batu Dalam village as a tourist village

Antimicrobial Activities of Extract of Andalas Endophytic Bacterial Fermentation Products in Overcoming Oral Cavity Infection Dwi Hilda Putri; Ratih Rahayu; Dinda Sahara; Nurhelmi Nurhelmi; Violita Violita
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 20 No. 2 (2019): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Dental and oral infection problems can be overcome using natural antimicrobial compounds from bacterial endophytic resulted from bacterial fermentation. This study aims to determine the effectiveness of extracts of Andalas endophytic bacterial fermentation products in treating oral cavity infections. Fermentation products was extracted using maceration methods. Antimicrobial activity of Andalas endophytic bacterial fermentation product was evaluated to S. mutans and C. albicans by disk diffusion method. The study showed that the optimum concentration of extract in inhibiting microbial growth that causes oral cavity infections was at 12.5%.

Leaf Anatomical Modification in Drought of Rice Varieties (Oryza sativa L.) Anggara Dwi Putra Zagoto; Violita Violita
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 20 No. 2 (2019): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Each organ plant has been formed perfectly to support physiological processes in an unfavorable environmental condition. Rice (Oryza sativa L.) be included plants sensitive to drought conditions during a stage of growth and development. This will cause pressure (stress) resulting in a decrease in rate metabolism in leaf cells. Leaf anatomical characteristics are criteria that can be used to identify plants that are tolerant to drought. Anatomical response leaves in drought conditions inform the development of leaf photosynthetic parts carrying out changes in anatomical structure morphology includes changes in cell walls, organ size, changes in direction growth, including dropping leaves and enhancing the life cycle. The research aimed to determine the anatomic response leaves rice varieties (Oryza sativa L.) to drought stress. Five rice varieties used were given drought-stress treatment for 12 days. Identification leaf anatomical structures using microscopic slices of transverse was made according to the paraffin method. Changes in the anatomical structure of leaves of drought-stress have decreased bulliform cells increase in size, the thickness epidermis cells in an effort to retain the water content in cells, and reducing the size and total stomata with purpose process control flow of transpiration and water use efficiency.

Analysis of Items for Selection of High School Biology Olympics Participants Ahmad Subari; Zulyusri Zulyusri; Violita Violita; Restu Fitriani
Jurnal Pendidikan Biologi Vol 10, No 1 (2021): Jurnal Pendidikan Biologi
Publisher : Magister Pendidikan Biologi, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpb.v10i1.23183

Based on observations at school, the teacher has not analyzed the items for the biology Olympics selection that will be tested on the participants. This study aims to determine the quality of the questions of the MAN Model Biology Olympics in Jambi City. This research is a quantitative descriptive study with the subject of class X students participating in the biology Olympics training. Data were obtained through test instruments in the form of multiple choice questions, answer sheets, and answer keys. The data analysis technique used Anates 4.0.9 program. The results showed the level of validity at the coefficient level of 5%, namely, valid questions amounted to 13 questions and 27 questions invalid. At the level of reliability obtained a value of 0.46 with a sufficient category. At the level of difficulty, there are 3 questions that are categorized as easy, 16 are categorized as medium, and 21 are categorized as difficult. Then on the discriminatory power there are 7 questions categorized as very good, 12 categorized as good, 7 categorized as bad and 14 categorized as very bad. Furthermore, in the distractor quality analysis, there are 4 questions with very good and good distractor quality, while the rest have distractor qualities in the criteria of poor, bad, and very bad. Based on the results of the item analysis recap, there is 1 question that can be used directly, 12 questions can be used but need to be improved and 27 questions cannot be used.

Analisis E-Learning Dalam Pembelajaran Evolusi Mahasiswa Pendidikan Biologi Selama Pandemi Covid-19 Tomi Apra Santosa; Eria Marina Sepriyani; Lufri Lufri; abdul razak; Moralita Chatri; Violita Violita
Edumaspul: Jurnal Pendidikan Vol 5 No 1 (2021): Edumaspul: Jurnal Pendidikan
Publisher : Universitas Muhammadiyah Enrekang

Penelitian ini bertujuan untuk mengetahui analisis e-learning dalam pembelajaran evolusi mahasiswa pendidikan biologi selama pandemi covid-19. Penelitian ini adalah penelitian studi pustaka (library research). Sumber data berasal dari jurnal nasional dan internasional bereputasi, buku dan sumber relevan lainnya. Teknik pengumpulan data dengan menelusuri jurnal dan buku yang berkaitan dengan kemampuan metakognitif mahasiswa. Hasil penelitian ini disimpulkan bahwa pembelajaran e-learning selama Covid-19 berjalan dengan efektif dalam pembelajaran evolusi dan memberikan kemudahan kepada mahasiswa dalam memahami materi pelajaran.

Utilization of organic liquid coffe fertilizer (Coffea arabica L.) as hydroponic nutrition in mustard plants (Brassica juncea L.) Fika Faradhila; Violita Violita; Resti Pevria
Bioscience Vol 6, No 2 (2022): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/0202262109521-0-00

As mustard greens contain various benefits that are beneficial to health, because the mustard greens contain vitamins and minerals that play an important role in the process of growth and metabolism of the body. One way to grow vegetables in a narrow area is to use a hydroponic system. Hydroponics is a way of farming without using soil media but uses water as a medium and uses nutrients as nutrients for plant growth. Hydroponic cultivation is one of the efforts to obtain quality agricultural products, healthy, and free of pesticides. However, the use of hydroponic nutrients for now is still sourced from chemical fertilizers. Therefore, one solution to reduce the use of inorganic fertilizers can be used organic fertilizers, namely liquid organic fertilizer which is more easily absorbed by plants because the elements in it have been decomposed. One of the wastes that can be used as liquid organic fertilizer is coffee grounds waste. This study aims to determine the use of liquid organic fertilizer coffee grounds (Coffea arabica L.) as hydroponic nutrients in mustard plants (Brassica juncea L.). This research was conducted from February to April 2020, located at the Integrated Research Laboratory and the wire house of the Department of Biology FMIPA UNP. This study uses a completely randomized design (RAL) with 5 treatments and 3 replications. Data were analyzed using the Analysis of Variance (ANOVA) and DNMRT follow-up tests at the 5% level. The results showed that various concentrations of hydroponic nutrient solution with liquid organic fertilizer based on coffee grounds had a significant effect on increasing the growth of mustard plants (Brassica juncea L.) both from plant height, number of leaves and leaf area. Keywords: Coffea Grounds, Hydroponics, Liquid Organic Fertilizer, Plant SawiSebagai sayuran sawi mengandung berbagai khasiat yang bermanfaat bagi kesehatan, karena pada sayuran sawi mengandung vitamin dan mineral yang berperan penting dalam proses pertumbuhan dan metabolisme tubuh. Salah satu cara untuk penanaman sayuran pada lahan yang sempit adalah dengan menggunakan sistem hidroponik. Hidroponik merupakan cara bercocok tanam tanpa menggunakan media tanah tetapi menggunakan air sebagai media dan menggunakan unsur hara sebagai nutrisi untuk pertumbuhan tanaman. Budidaya secara hidroponik merupakan salah satu upaya untuk memperoleh produk pertanian yang berkualitas, sehat, dan bebas pestisida. Namun penggunaan nutrisi hidroponik untuk saat ini masih bersumber pada pupuk kimia. Oleh karena itu salah satu solusi untuk mengurangi penggunaan pupuk anorganik tersebut dapat digunakan pupuk organik yaitu pupuk organik cair dimana lebih mudah terserap oleh tanaman karena unsur-unsur di dalamnya sudah terurai. Salah satu limbah yang dapat dijadikan pupuk organik cair yaitu limbah ampas kopi. Penelitian ini bertujuan untuk mengetahui pemanfaatan pupuk organik cair ampas kopi (Coffea arabica L.) sebagai nutrisi hidroponik pada tanaman sawi (Brassica juncea L.). Penelitian ini telah dilakukan bulan Februari sampai April 2020, bertempat di Laboratorium Penelitian Terpadu dan rumah kawat Jurusan Biologi FMIPA UNP. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 3 ulangan. Data dianalisis menggunakan uji Analisis Varians (ANOVA) dan uji lanjut DNMRT pada tingkat 5%. Hasil penelitian menunjukkan bahwa berbagai konsentrasi larutan nutrisi hidroponik dengan pupuk organik cair berbahan dasar ampas kopi memberikan pengaruh yang nyata untuk meningkatkan pertumbuhan tanaman sawi (Brassica juncea L.) baik dari tinggi tanaman, jumlah daun dan luas daun.

EDUKASI JAJANAN SEHAT KEPADA SISWA SD DALAM MENGHADAPI ERA NEW NORMAL Yusni Atifah; Afifatul Achyar; Rijal Satria; Violita Violita; Helsa Rahmatika; Jalilah Azizah
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 6, No 1 (2023): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v6i1.213-217

Anak usia sekolah memerlukan asupan energi dan zat gizi untuk mendukung pertumbuhan dan juga prestasi belajar anak di sekolah. Salah satu sumber asupan energi dan zat gizi bagi anak sekolah bersumber dari pangan jajanan. Anak usia sekolah sebagai generasi penerus bangsa merupakan investasi bagi suatu bangsa. Kualitas anak-anak pada masa sekarang akan menentukan kualitas suatu negara di masa depan. Edukasi keamanan pangan jajanan perlu dilakukan sejak dini secara sistematis dan juga berkelanjutan sebagai salah satu upaya untuk peningkatan kualitas sumber daya manusia. Pemberian nutrisi yang berkualitas, sehat dan sesuai dengan kuantitas yang seharusnya penting untuk menunjang pertumbuhan perkembangan anak usia sekolah agar optimal. Oleh karena itu, perlu adanya edukasi kepada siswa SD untuk meningkatkan pengetahuan terkait keamanan pangan jajanan dan mengetahui arti simbol-simbol pada bungkus jajanan. Kegiatan ini dilaksanakan pada bulan Juli 2022, dan diikuti oleh 206 peserta dari kelas 3 dan 6 SDN 02 Payakumbuh. Hasil evaluasi kegiatan menunjukkan adanya peningkatan pengetahuan siswa terhadap keamananan jajanan dan memiliki keterampilan dalam mengidentifikasi simbol-simbol pada bungkus jajanan. Kesimpulan untuk kegiatan ini sudah efektif dilaksanakan dan dapat mengedukasi siswa SD dalam mengetahui keamanan pangan jajanan.

Co-Authors Abdul Razak Afifatul Achyar Ahmad Subari Al Adawiyah Anggara Dwi Putra Zagoto Annisa Anike Putri Atifah, Yusni Ayu Adelia Azwir Anhar Des Des M Dezi Handayani Dinda Sahara Dwi Hilda Putri Eria Marina Sepriyani Fika Faradhila Helsa Rahmatika Heron Tarigan Irma Leilani Eka Putri Jalilah Azizah Leilani Eka Putri Linda Advinda Lufri Lufri Marsha Utami Moralita Chatri Nanta Mulia Nelfia Pitri Nella Fauziah Nofi Yendri Sudiar Nurhelmi Nurhelmi Nurul Hasanah Nurul Rahmi Olan Tri Sinaga Putri Widianti Ratih Rahayu Resti Fevria Resti Pevria Restu Fitriani Rijal Satria Rizka Putri Alti Sintia Putri Sri Rahmadani Fitri Syifa Fajrisani Tomi Apra Santosa Santosa Yolanda Karinia Yosefin Nisa Aulia Yulkifli Yulkifli Zulyuri Zulyuri Zulyuri Zulyuri Zulyusri, Zulyusri

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