Yuni Sri Rahayu

• Dr.
• Lecturer at Universitas Negeri Surabaya

In general, coal mining is carried out openly using heavy equipment to take and move soil in the topsoil area until coal mining is possible to be conducted. As a consequence, the nutrient level is low because there is physical, chemical, and biological soil damage. Bioremediation is one of the alternatives to improve former coal mining land by util...

Good teaching materials in learning need to include facts and phenomena. In addition, it provides opportunities for students to carry out research activities to practice creative thinking skills. The study aims to describe the validity of e-modules that can enhance students' creative thinking skills through utilizing the environment as a learning r...

Buku ajar ini dapat digunakan sebagai penunjang teori dan praktikum dalam mata kuliah Ilmu Hara atau mata kuliah Hama dan Penyakit Tumbuhan. Kajian dalam buku ajar ini meliputi konsep atau teori dan aplikasinya yang berkaitan dengan penyakit tanaman akibat defi siensi unsur hara. Buku ajar ini juga dilengkapi dengan berbagai fi tur rangkuman,...

p> Dalam upaya membekali siswa menghadapi tantangan abad 21, penilaian yang dikembangkan oleh guru diharapkan dapat mendorong peningkatan keterampilan berpikir tingkat tinggi, meningkatkan kreativitas, dan membangun kemandirian siswa untuk menyelesaikan masalah. Tingkat pemahaman dan kemampuan guru mata pelajaran IPA SMA Kabupaten Gresik dalam meny...

Science literacy is the ability to understand a concepts and principles of science and have the capacity to think scientifically to make decisions related to developing scientific issues and scientific phenomena that can be applied in everyday life related to science. This study aims to analyze the science literacy achievement of junior high school...

The distance learning system during the Covid-19 pandemic brought students closer to exploring scientific knowledge information around them, such as local wisdom in coastal areas. This study aims to determine the level of scientific literacy competence of students towards coastal wisdom based on three indicators, namely, explain phenomena scientifi...

Electronic module (E-module) that is based on a problem-based learning science is a teaching material made by being operated online that is simple, flexible and independent, so as to facilitate students' critical ability to solve problems in everyday life and meet global challenges that can be accessed online through certain sites. The use of this...

Abstrak Berpikir kreatif adalah kecakapan hidup yang dibu pada abad 21. Kreativitas adalah kemampuan untuk mengkreasikan hal yang sudah ada dan menciptakan ide baru; bersikap untuk terbuka terhadap hal yang berbeda maupun hal baru. Kemampuan berpikir kreatif dapat didukung dengan metode Project-Base Learning(PjBL). Hal tersebut sesuai dengan kuriku...

Seiring bertambahnya jumlah pasien positif COVID-19 di Indonesia, Kemendikbud merekomendasikan agar melakukan program belajar dari rumah. Program ini telah dilaksanakan di berbagai jenjang pendidikan di Indonesia. Sebagai bagian dari adaptasi kebiasaan belajar baru di masa pandemi Covid-19, salah satu hal yang perlu untuk proses adaptasi dalam pemb...

Dampak pandemi COVID-19 menjadikan proses Pembelajaran Tatap Muka (PTM) tidak dapat dilakukan sehingga beralih pada Pembelajaran Jarak Jauh (PJJ). Alternatif media pembelajaran yang dapat dikembangkan dalam proses PJJ adalah e-LKPD. e-LKPD interaktif merupakan lembar kerja peserta didik yang dikemas secara digital dengan beragam fitur untuk membant...

Adanya pandemi Covid-19 menyebabkan sistem pendidikan Indonesia melaksanakan sistempembelajaranjarak jauh. Oleh karena itu dalam proses pembelajaran tersebut membutuhkan bahan ajar elektronik dandapat melatihkan salah satu keterampilan 4C yaitu berpikir kritis. Berpikir kritis merupakan salah satutuntutan karakteristik 4C pada pendidikan abad ke-21...

Pendidikan abad ke-21 menuntut siswa untuk menguasai keterampilan 4C, salah satunya adalah berpikir kritis. Dengan berpikir kritis akan membuat siswa bernalar dan mampu memutuskan hal hal mana yang lebih efektif. Salah satu cara yang dapat digunakan untuk melatih keterampilan berpikir kritis adalah dengan menggunakan e-book interaktif. Penelitian i...

Abstrak. Perkembangan teknologi yang semakin maju, mempengaruhi proses pembelajaran yang mengaplikasikan perkembangan teknologi dan melatihkan keterampilan yang dibutuhkan di abad 21 yaitu keterampilan berpikir berpikir kreatif. E-book yang dikembangkan dengan strategi mind mapping, dilengkapi berbagai fitur yang dapat mendukung kreativitas siswa....

Benih bayam yang telah melewati masa kadaluarsa dapat ditingkatkan vigor dan viabilitas dengan perlakuan invigorasi menggunakan zat pengatur tumbuh alami seperti ekstrak akar eceng gondok. Penelitian ini bertujuan untuk mengetahui pengaruh masa kadaluarsa benih dan konsentrasi ekstrak akar eceng gondok terhadap perkecambahan dan pertumbuhan benih b...

Keterampilan literasi sains menjadi fokus utama penilaian yang ditentukan oleh PISA (ProgrammeInternational for Student Assessment). Berdasarkan data dan fakta, menunjukkan keterampilan literasisains siswa Indonesia masih di bawah rata-rata. Literasi sains dibutuhkan dalam penguasaan konsep materitranspor membran dengan dikemas dalam pembelajaran i...

Phenol compounds are secondary metabolic compounds produced by plants and can cause the surrounding environment to change. This study aims to find out the content of phenolic compounds in cambodian leaves and flowers ( Plumeria acuminata Ait.) that are decomposition at different times. The experiment used a complete Randomized Design of factorial p...

Junior high school students need to have good scientific literacy skills to have sufficient competence to compete in the current and future era of information and globalization. Science is basic knowledge covering products, processes, and applications. One of the science materials is static electricity and electricity in living things. This study a...

Azolla dan air cucian beras merupakan bahan alami yang memiliki kandungan hara NPK tinggi dan banyak digunakan dalam pupuk organik cair (POC). Tujuan penelitian ini untuk mengetahui kadar unsur hara NPK POC Azolla dan air cucian beras yang ditambahkan silika serta mengetahui konsentasi optimal yang berpengaruh terhadap pertumbuhan tanaman kedelai v...

Buah pisang busuk, bonggol pisang, dan daun paitan (Tithonia diversifolia) merupakan limbah yang mengandung unsur hara seperti N, P, K yang dapat dimanfaatkan sebagai pupuk. Dalam penelitian ini terdapat dua tujuan, yaitu untuk mendeskripsikan kualitas unsur hara dari Pupuk Organik Cair (POC) Nabati dengan penambahan Silika (Si) dan mendeskripsikan...

As technology advances, learning materials in learning are expected to be able to apply technological developments and practice the skills needed in the 21st century, namely communication and creative thinking. E-book, which was developed with a mind mapping strategy, is equipped with various features that can support student creativity. This study...

Bahan ajar berbasis elektronik dibutuhkan dalam pembelajaran jarak jauh secara kontekstual pada masa pandemi covid-19, yaitu dengan pendekatan Contextual Teaching and Learning (CTL). Tuntutan keterampilan juga harus dimiliki siswa pada abad ke-21, salah satunya melalui keterampilan berpikir kreatif yang dapat dicapai dengan pengembangan e-book inte...

Pendidikan di Indonesia sedang menjalankan sistem pembelajaran jarak jauh salah satunya secara online akibat pandemi Covid-19. Hal tersebut seolah mendukung era revolusi industri 4.0. Oleh karena itu bahan ajar seperti e-book dirasa sesuai untuk mendukung pembelajaran jarak jauh karena dikemas dalam bentuk file atau alamat URL dilengkapi fitur teks...

The learning method in Indonesia employed distance learning during the Covid-19 pandemic with the purpose that the Ministry of Education and Culture released a decree number 719/P/2020 on Diagnostic Assessment, of which one was meant to identify misconceptions with the intent that teachers must carry out. Identification of misconceptions needs to b...

Fusarium sp. termasuk fungi tular tanah penyebab layu yang menyerang berbagai tanaman. Penggunaan fungisida sintetis memberikan dampak negatif bagi lingkungan dan kesehatan konsumen, sehingga diperlukan pengendalian menggunakan biofungisida. Tanaman dewandaru (Eugenia uniflora L.) mengandung senyawa bioaktif yang bersifat antifungi sehingga berpote...

Cadmium (Cd) is a heavy metal that can inhibit plant growth and interfere with nutrient absorption. Brassica juncea or mustard greens are members of the Brassicaceae family which are used as phytoremediation agents in heavy metal polluted soils. The process of phytoremediation can be accelerated by the addition of Vesicular Arbuscular Mycorrhiza (V...

Kadmium (Cd) merupakan logam berat yang dapat menghambat pertumbuhan tanaman dan mengganggu penyerapan unsur hara. Brassica juncea atau sawi hijau merupakan anggota famili Brassicaceae yang digunakan sebagai agen fitoremediasi pada tanah tercemar logam berat. Proses fitoremediasi dapat dipercepat dengan penambahan Mikoriza Vesikular Arbuskular (MVA...

Existing learning has not fully facilitated 4C (critical thinking, communication, collaboration, and creativity) skills and there are obstacles for students to encounter in studying biology, especially the material about plant tissue. It happens due to various limitations in achieving basic competency skills. One of the learning approaches that can...

Bunga matahari merupakan salah satu tanaman yang memiliki peluang besar dan prospek cerah yang dapat dimanfaatkan sebagai tanaman hias dalam pot maupun bunga potong. Jenis tanaman bunga matahari yang menarik perhatian salah satunya yaitu Sunflower Teddy Bear. Untuk mempercepat pertumbuhan dan produktivitas tanaman adalah menggunakan ZPT salah satun...

Pembelajaran di Indonesia saat ini menerapkan sistem Pembelajaran Jarak Jauh (PJJ) salah satunya secara daring yang disebabkan pandemi COVID-19. Alternatif bahan ajar yang dapat dikembangkan untuk PJJ adalah e-book. E-Book adalah buku elektronik berbentuk digital yang dikemas dalam bentuk teks, gambar, tabel, animasi dan video. Berdasarkan hal ters...

Pada masa pandemi Covid-19 dibutuhkan media atau bahan ajar elektronik yang dapat membantu dalam pembelajaran kontekstual sekaligus melatihkan salah satu keterampilan 4C (Creativity skill, Communication skill, Critical thinking skill, serta Collaboration skill) yaitu berpikir kritis untuk membuat keputusan ataupun melakukan suatu tindakan solusi da...

This study aimed at analysing junior high school students’ creative thinking skills in biology learning. Creative thinking skills were measured by providing 5 open-ended essays with the indicators of fluency, flexibility, original thinking, and elaboration thinking. The present study used descriptive survey method to obtain quantitative data withou...

Metacognitive skill is one of the skills needed in community 4.0. This development research was aimed to produce valid student worksheet based on Know Want Learned (KWL) strategy for photosynthesis topic to facilitate students’ metacognitive skill. The student worksheet consists of three main phases of learning activities, namely Know, Want, and Le...

Ecopreneurship merupakan keterampilan yang sangat dibutuhkan di era Revolusi Industri 4.0 karena mengembangkan keterampilan berpikir kritis dan pemecahan masalah, keterampilan komunikasi, keterampilan kolaborasi, keterampilan untuk menciptakan hal-hal baru (kreativitas). Pembelajaran materi pertumbuhan dan perkembangan untuk melatihkan indikator ke...

The purpose of this study was to develop Problem-Based Learning student worksheets on bioremediation material to facilitate students authentic problem solving skills. The development used a procedural development model called ADDIE (Analysis, Design, Development, Implementation, Evaluation). The subjects in this study were Biology Students at Surab...

Perbedaan konsep yang dimiliki oleh peserta didik dengan yang telah disepakati oleh para ahli disebut miskonsepsi. Miskonsepsi dapat terjadi pada berbagai macam materi, salah satunya yaitu katabolisme karbohidrat. Katabolisme karbohidrat merupakan proses pembongkaran karbohidrat dengan ada atau tidak ada oksigen. Instrumen four-tier multiple-choice...

Tujuan penelitian ini adalah menghasilkan LKPD berbasis Guided Inquiry pada materi pertumbuhan dan perkembangan untuk melatih keterampilan literasi sains peserta didik yang layak berdasarkan validitas, kepraktisan dan keefektifan guna menunjang proses pembelajaran di sekolah. Penelitian ini merupakan jenis penelitian pengembangan dengan menggunakan...

One abiotic barrier that can inhibit the growth of soybean plants is salt stress. This study was conducted to describe the role of tripartite symbiosis between Glosum mosseae and Rhizobium japonicum on plant tolerance grown under salt stress conditions using soybean as a plant tested. There were two conditions of salinity (0 mM NaCl and 200 mM NaCl...

Purpose The study aimed at developing the bioremediation model of Lapindo mud through multisymbiotic organism. Design/methodology/approach The research was conducted using completely randomized design. The model plants chosen in this research were soybean. The interaction pattern during the treatment was used to develop the bioremediation model ba...

The germination process is influenced by external and internal factors including the type of seed. Hard seeds require special treatment in stimulating the germination process such as scarification and stratification (for example applying exogenous hormones to seeds during the germination process). This study aimed to describe the effect of exogenou...

One type of vegetable that is popular among the Indonesian is mustard greens (Brassica juncea L.), which is also known as Caisim because it is often processed into various dishes and contains various ingredients and vitamins which are good for health. The last few years Caisim production has decreased, one of the causes is the constraints in the cu...

Creative thought is needed in the industrial revolution era 4.0 because learning can take place everywhere and every time. So, the role of technology also needed to support this learning. However, technology cannot fully replace face to face learning. One of the alternative efforts to overcome this problem is by implementing blended learning. Blend...

Red chilli as a vegetable commodity plays an important role for Indonesian people and its cultivation depends on the level of water availability, which is still a problem in certain area in Indonesia. This study aimed to describe the effect of local microorganism (LMO) concentration and different soil water levels on the anatomical and morphologica...

In this current digital era, the video game is favorite especially among young people. Besides widely known as a form of entertainment, some messages or lessons can be learned from a video game that may affect the players. Conscious or unconscious, games have influenced many sectors of life, and it has been recognized as a serious game and no excep...

This research is aimed to develop learning device of Guided Discovery model with PhET simulation to trill students critical thinking skill. This research uses 4D development model and tested on 15 students of class XII IPA with test design using one group pretest-posttest design. Learning tools developed include: (a) syllabus (b) RPP, (c) student b...

Urban agriculture plays a significant role in national development by contributing towards food security, job creation, and income generation. This study aims to assess the effect of unemployment records in graduated students in the recovery of the agricultural sector and the input to food security. A combination of both quantitative and qualitativ...

Gaharu tree (Aquilaria malaccensis) is the most potential type of gaharu tree. Based on the subject of high level botany as included in the 21st century curriculum, students are encouraged to observe any local wisdom, including the identification of gaharu tree. The purposes of this study are to recognize students' concept mastery of gaharu tree id...

Petroleum is a mixture of hydrocarbon complexes with organic compounds from sulfur, oxygen, nitrogen, and metal-containing compounds. These organic compounds can be used as substrate for bacterial growth. This study aimed to isolate and identify hydrocarbon degrading bacteria and phosphate solubilizing bacteria in oil-contaminated soil in Bojonegor...

The Innovative Problem Solving Strategy (IPSS) was developed as part of pre-service teacher training suggesting a new Teaching and Learning Curriculum (TLC). This research is aimed at analyzing the IPSS effectiveness if applied to solving problems concerned with plant anatomy, as well as at teaching students to use the problem solving strategy in i...

This study was conducted to describe students' opinion of energy conservation and environmental issues during campus activities. It was a descriptive quantitative research using survey method. The subjects were 26 students of the first, second, and third-year students of Natural Science Department of Unesa. These students are pre-service teachers f...

The petroleum mining industry plays an important role in the fulfillment of human needs but also has a negative impact on less productive soil due to oil contamination that causes soil nutrient degradation such as nitrogen and phosphate level. This research aims to study the dynamics of nitrogen and phosphate on oil-contaminated soil by utilizing m...

Social media becomes an inseparable phenomenon in everyday life. Similarly, how learners learn not only from conventional books or online learning. Social media has now become a medium for learning anywhere anytime and joyful. Based on these opportunities, researchers plan to develop a media-based social media applications, especially telegram BOT...

The fundamental issue that rarely gets the attention of schools in the learning process is how teachers teach the internal environment of learning is prepared. The Learning process done so far rarely touches how the internal environment is formed so that the learning process can provide maximum results. The strategy with inquiry methodology with cl...

Potassium is one of macronutrients required by plants. The concentrations of soluble Potassium in the soil are usually very low, more than 90% of Potassium in the soil are (K)-bearing minerals form,-one of them is Feldspar which quite abundant found in Indonesia. Rhizobacteria have been found to solubilize (K)-bearing mineral into a form that plant...

Silicate is known as a beneficial element that has important role for growth and development of paddy. Paddy is the greatest accumulator of Si up to 10% of its dry weight, but this plant can't absorb that element by itself. The uses of paddy rhizosphere bacteria as a silicate solubilizing agent should be studied furthermore. This study aims to isol...

The purpose of this study was to measure the effectiveness of two problem-solving cycles. The effectiveness of thinking skills was measured through the achievement of learning outcomes of problem solving skills and mastery of the concept of Plant Anatomy. The study was conducted on 96 students at Plant Anatomy course. The research type was quantita...

Lapindo mud, the biggest mud disaster in Sidoarjo, Indonesia since 2006, still offers numbers of constituents such as heavy metals and crude oil. The oil is produced by a mixture of complex hydrocarbon with organic compounds from sulfure, oxygen, nitrogen and metal. Moreover, those organic compounds can be used as substrates for bacteria growth. Th...

This research aims to describe development of Biology student worksheets to facilitate science process skills of student, at the same time to facilitate thinking skills of students in senior high school are equipped with Assesment Sheets. The worksheets development refers to cycle which includes phase analysis (analysis), planning (planning), desig...

This research aims to develop problem-based learning oriented teaching materials to improve students' mastery of concept and critical thinking skill. Its procedure was divided into two phases; developmental phase and experimental phase. This developmental research used Four-D Model. However, within this research, the process of development would no...

This research aims to produce P3E learning model to improve students' critical thinking skills. The developed model is named P3E, consisting of 4 (four) stages namely; organization, inquiry, presentation, and evaluation. This development research refers to the development stage by Kemp. The design of the wide scale try-out used pretest-posttest gro...

Calcium is the largest mineral in calcareous soils. High levels of calcium carbonate lead to phosphate deposition. Nutrient deficiencies in calcareous soil (mainly Phosphate and Nitrogen) resulted only certain crops with a wide range of tolerances that can grow. Meanwhile, dynamics nutrient in calcareous soils also depend on the topography and deco...

Plant recognition based on digital leaf image has received as particular attention in computer vision and intelligence system, due its important implication in automatic plant identification. Plant species have the unique leaf characteristics such as the shape, texture, margin, and colour, which different each other. This study presents a novel met...

The purpose of this study was to identify the physiological demands and distance covered during national competitive 2016. Method used 9 female players including 2 backs, 3 halves, 4 forwards. Data was collected by measuring heart rate, blood lactate, distance covered and time spent walking/running. Data was analysed using mean, standard deviation,...

Pluchea indica (L.) Less. produces secondary metabolites such as lignans, terpenes, phenylpropanoids, benzoids, tannins, flavonoids, and hydroquinone phenols, used to protect plants against various herbivores, and pathogenic microorganisms, and are used as bioherbicides for weed control. The purpose of this study is to describe the effect of phenol...

The purpose of this study is to describe the results of the implementation of a teaching-learning package in Plant Physiology courses to improve the student's life skills using the science process skills-based approach ICT. This research used 15 students of Biology Education of Undergraduate International Class who are in the Plant Physiology cours...

p> This research is aimed to develop biology learning materials in Junior High School for plants movement topic to increase students’ achievement and self-directed through Science Process Skill approach. This is development research refers to Kemp’s development model. The learning kit is taught in SMPN 1 Blega Bangkalan Madura for 28 students grade...

The purpose of this research is to develop biology - Fungi Kingdom learning material in English with process skill approach that applied in 10th grade students in Khadijah Senior High School. The development of this learning materials was conducted by using 4-D model that has 4 main stages. However, this research only carried out 3 out 4 stages whi...

This research aims to develop guided inquiry based teaching materials which is valid, practical, and effective to facilitate the students’ scientific literacy. The development of teaching material used the 4D model and was tested in grade 7th-D of SMP GEMA 45 in the second semester of 2014/2015 by using the Pre-Experimental One-Group Pretest-Postte...

Teaching and learning in school only emphasizes on the aspects of knowing and understanding. An aspect of the analysis, application, synthesis and evaluation is implemented very rarely so the teaching learning process lead to remembering aspect. This study aims to fasilitate students' creative thinking skills using a TASC oriented learning at 29 se...

Science teaching and learning process in school only emphasize on the aspects accepting of knowledge, remembering, and logical thinking, while students creative thinking aspects get less attention. Teachers did not implement the teaching activity that emphasizes the creative thinking because of limited time to make teaching and learning amaterials...

This researchaims todevelopinquiry learningmaterials using PhET simulationprogramto facilitatescience process skillsandscienceconceptsunderstanding in the junior grade VIIinSMPNegeri 3SugioLamongan.The development oflearningmaterialsin the researchcarried out using4-D modelofThiagarajan, whichconsistsofstagesof development,namely: define, design, d...

To achieve the 2013 curriculum aims, which is, to prepare Indonesian people that have the ability to live as individuals and citizens who believe, productive, creative, innovative, effective and able to contribute to society, nation, and world civilization, teachers should educate students to become self-regulated learner. The previous studies foun...

Science process learning emphasis on giving learning experience directly to develop competence in exploring and understanding environment scientifically. Science education is purposed for inquiry and do something in order to help the student to get more understanding about environment. The purpose of this development research is to describe the val...

To promote connection between biology content and social context, students need to be involved in Socio-scientific Issues (SSI) learning model. In doing so, involving 29 students majoring Biology Education enrolled in Environmental Knowledge course, to observe student’s perception and student’s achievement. Data were collected through questionnaire...

This research aimed to describe the effect of the TEQ - DLS learning on critical students’ critical thinking skill. This research was conducted in two stages, developed teaching learning material followed by the implementation phase of learning in the classroom. This research was a quasi experimental design with one-group pretest-posttest design an...

This study aimed to evaluate the effectiveness of using the authentic assessment on students’ attitudes involving interest and enjoyment when they learned Atomic Absorption Spectroscopy Topic. Selected sample of this research was 37 students of chemistry who enrolled in the Spectroscopic Methods of Analysis Subject, Mathematics and Natural Sciences...

Implementation peripheral of study with character aim to overcome student moral decadence with moral attitude and improve result learn cognate at Human Reproductive System being use meaningful model study.The researcher use One Group Pretest-Postest Design during the implementation. The data were analized using quantitative and qualitative descript...

To promote the knowledge of plant anatomy which is frequently taught using traditional method, students need to be involved in authentic learning by providing them an authentic task. Therefore, the aims of this current research are to implement a certain authentic task of plant anatomy; to evaluate the effectiveness of the task on the students’ lea...

In reality, the score in science subject of RSBI students’ was unsatisfied, so that a research was conducted. The aim of this research was to differentiate the concept comprehension and the student ability in concept map between the implementation of underlining and 3R strategies. The research sample was 32 students from two groups that were underl...

In Indonesia Internationally Standardized School, the teacher are required to use English andcommunication technology in teaching math and science. The use of English, however, often becomes an obstacles for the students to follow the teaching learning process, so the students need to be taught reading strategies which help them to improve their ac...

Tujuan kegiatan ini ialah untuk melatih guru-guru SMP Lab School Surabaya dalam menulis karya ilmiah dengan baik dan benar dari hasil PTK atau Lesson Study yang pernah dilakukan dan untuk mendeskripsikan respon peserta terhadap kegiatan pelatihan. Metode pelaksanaan dibagi menjadi tiga tahap, yakni Tahap Persiapan, Tahap Pelaksanaan, dan Tahap Eval...

Kadar hara pada tanah kapur yang sangat rendah dan pH di atas 7 (basa), menjadikan tanah kapur sangat terbatas pemanfataannya untuk dapat digunakan sebagai lahan media tanam bagi tanaman budidaya. Untuk dapat memanfaatkannya, maka tanah kapur harus diolah terlebih dulu. Tujuan penelitian adalah untuk mendiskripsikan hasil dekomposisi seresah daun j...

ABSTRAK Bakteri endofit diazotrof merupakan mikroorganisme yang hidup di dalam jaringan tanaman dan membantu proses fiksasi nitrogen secara biologi sehingga diperoleh akumulasi amonium yang akan dimanfaatkan oleh tanaman inang. Empat isolat bakteri endofit telah diisolasi dari akar tanaman ubi jalar (Ipomoea batatas) varietas Papua Patippi, yaitu i...

The widespread consumption of oxo-degradable polyethylene plastics in Indonesia is potentially cause pollution. This problem can be overcome by utilize plastic degrading-bacteria as degradation agent. The present study aims to isolate and characterize of oxo-degradable polyethylene degrading-bacteria from Benowo landfill soil Surabaya. Isolation an...

Saline soil has a high salt content with pH between 7,3 – 8,5. These conditions contribute decreased of plant growth, yield quality and metabolic disorders related to salt (Na and/or Cl) toxicity. The series of experimental studies have been conducted to describe the effect of mychorhizae and rhizobium to increase plant tolerance based on the perce...