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All Journal Edumatsains Paspalum: Jurnal Ilmiah Pertanian IJIS Edu : Indonesian Journal of Integrated Science Education
Kusnadi Kusnadi
Universitas Pendidikan Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Education Mathematics Physics Social Sciences Other

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Pengaruh Pemberian Bakteri dan Trichoderma viride dari Isolat Usus Larva Black Soldier Fly (BSF) terhadap Ketahan Penyakit Cabai Keriting (Capsicum annuum) Melanie Kristi; Yayan Sanjaya; Kusnadi Kusnadi
Paspalum: Jurnal Ilmiah Pertanian Vol. 12 No. 1 (2024)
Publisher : Lembaga Penelitian dan Pengabdian Universitas Winaya Mukti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35138/paspalum.v12i1.681

Abstract

Capsicum annuum (curly red chili) is an important commodity for the community. The addition of chemical pesticides is used by farmers to increase plant disease resistance. The use of chemical pesticides is harmful to the environment and can have long-term effects if consumed. Therefore, biopesticide innovation is needed. Black Soldier Fly (BSF) is an insect that has bacteria and fungi in its gut. Bacteria and fungi found in BSF intestinal isolates can function as antimicrobials for plants. Because of this, in this study investigated the effect of the bacteria and fungi Trichoderma viride in increasing disease resistance in C. annuum plants. There were 4 treatments in this study, namely the administration of chemical fungicides, BSF bacterial formula, T. viride. BSF, and a mixture of bacteria and T. viride BSF. The results obtained were analyzed by calculating the Intensity of Attack (IS) score, microscopic observations in the laboratory, and statistical tests. The IS score of the control plants was 75.0%, the fungicide treatment was 37.5%, the bacterial treatment alone was 33.3%, the T. viride treatment was 19.4%, and the mixed treatment of bacteria and T. viride was 4.2%. All plants were attacked by leaf spot disease by Cercospora sp. Control plants were attacked by Sclerotium rolfsii fungus wilt and powdery mildew by Leveillula taurica and jaundice. Jaundice also attacked plants treated with T. viride only and bacteria only. The normality and homogeneity tests show that the data is not normal and not homogeneous but H1 is acceptable based on the Kruskal Wallis test. The conclusion of this study is that bacteria and T. viride from BSF are able to increase disease resistance in curly chili plants, but are not yet effective in preventing disease caused by Cercospora sp.
TPACK and Learning Strategies in Genetics: A Pedagogical Study Oky Rizkiana Silaban; Novita Resti; Diki Koerniadi; Kusnadi Kusnadi; Taufik Rahman
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 9 No 1 (2024): July
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v9i1.5914

Abstract

Genetics is a part of biological science that contains topics such as genetic structure, protein synthesis, cell division, and inheritance of traits. Genetics is one of the most commonly found misconceptions and difficulties in learning this material due to its complex, abstract and rapid development. To overcome these problems, it is necessary to analyse TPACK and analyse various learning strategies used in teaching genetics so that it can be taken into consideration for teachers in teaching genetics in the classroom. This research uses descriptive qualitative method by collecting relevant research in the form of national and international articles available on various websites. From the results of the research, it was found that teachers have applied a variety of models, methods, and media in learning genetics. The success in this learning process certainly depends on the teacher's TPACK analysis skills so that the teacher not only pays attention to the content but also can adjust it to the needs of students.
Students' Oral Communication Skills in Using Digital Encyclopedia of Mammals Based on Citizen Science Project Fitri Aryanti; Topik Hidayat; Yayan Sanjaya; Kusnadi Kusnadi
IJIS Edu : Indonesian Journal of Integrated Science Education Vol 7, No 1 (2025): January 2025
Publisher : UIN Fatmawati Sukarno Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29300/ijisedu.v7i1.6935

Abstract

This study aimed to analyze students' oral communication skills using the Citizen Science Project (CSP) based digital encyclopedia of mammals in learning. This research combines digital technology, community involvement, and the development of scientific communication skills as a novelty. The method used was descriptive quantitative with data collection techniques through observation. The research subjects consisted of 30 prospective teacher students of the Biology Education Study Program at a private university in Bandung. The instrument used was an observation sheet on oral communication skills. The results showed that most students scored good or sufficient. The average value on indicators 1-6, namely being able to provide information or ideas by 75%, including the good category, mastering the material to be used as presentation material by 70%, including the sufficient category, delivering report results systematically and clearly by 75% including the good category, questioning skills by 70% including the sufficient category, being able to answer questions by 75% including the good category, and confidence by 70% including the sufficient category. The percentage value of the active indicator in group discussions is 95%, which is included in the very good category. Based on these data, communication skills are critical because they allow students to convey ideas, work together, and exchange information. Students' oral communication skills can be improved by continuing to train and provide opportunities for students to communicate orally on an ongoing basis based on CSP.
Co-Authors Diki Koerniadi Fitri Aryanti Melanie Kristi Novita Resti Oky Rizkiana Silaban Taufik Rahman Topik Hidayat YAYAN SANJAYA