Winarso D. Widodo
Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor (Bogor Agricultural University), Indonesia Jl. Meranti, Kampus IPB Darmaga, Bogor 16680

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Phenological Study of Flowering and Fruiting in Banana “Rejang” (Musa acuminata Colla) Asmah, Nur; Widodo, Winarso Drajad; Suketi, Ketty
Journal of Tropical Crop Science Vol. 12 No. 02 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.02.451-461

Abstract

Banana “Rejang” originates from Rejang Lebong Regency in Bengkulu Province, Sumatra, at elevations ranging from 600 to 700 meters above sea level. Banana “Rejang” is known for its sweet taste, high fibre in the pseudo stems, resistance to Fusarium spp., with slender and long fruits, and tapering fruit tips. This study aims to examine the phenological patterns of Rejang bananas and establish appropriate harvest criteria using the heat unit method. A descriptive research design was employed to illustrate the phenological development during the generative phase without external treatments. A total of 25 Rejang banana plants were observed and measured, spanning the developmental stages from flag leaf emergence to flowering and fruiting. Data were collected daily at 7:00 a.m., 10:00 a.m., 1:00 p.m., and 4:00 p.m. The average daily temperature was recorded to calculate heat units in degrees Celsius (°C). Phenological development begins with the emergence of the flag leaf at 102 days after planting, corresponding to an accumulated heat unit of 1,800-degree days. Flower initiation occurs at 134 days after planting, with 2,330-degree days accumulated as heat units. The period from flower initiation to anthesis lasts approximately 4 days, followed by a period of 4 days after anthesis (DAA). Bract opening occurs 3 DAA, followed by bract rolling at 7 DAA and banana heart emergence at 10 DAA. The bunch stalk forms 7 days after anthesis, after the banana heart emerges. Fertilization occurs 165 days after planting (DAP), with a total heat unit accumulation of 2,833 degree-days. This stage involves the formation of the bunch stalk and the emergence of the fruit cluster, which occurs 5 DAA. The rachis appears at 5 days after anthesis, and fruit development is reached at 12 DAA after rachis emergence. The optimal harvest.
Pemantapan Satuan Panas Sebagai Kriteria Panen Terukur Pisang Raja Bulu (Musa sp. AAB Group) Nurkholis, Nurkholis; Suketi, Ketty; Widodo, Winarso Drajad
Buletin Agrohorti Vol. 13 No. 2 (2025): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v13i2.65465

Abstract

Pisang merupakan buah klimakterik sehingga penting untuk menentukan waktu panen yang tepat dan terukur agar menghasilkan pisang dengan kualitas baik serta daya simpan yang panjang. Penentuan waktu panen terukur dapat dilakukan dengan mengakumulasikan satuan panas yang diterima tanaman. Penelitian ini bertujuan mengevaluasi akumulasi satuan panas 1400 ˚C hari sebagai kriteria panen terukur pisang Raja Bulu. Penandaan bunga yang antesis dilakukan di Kebun Percobaan IPB Sukamantri, Bogor, Jawa Barat (560 m dpl) pada bulan Januari hingga Februari 2023 serta pengujian kualitas buah dilakukan pada bulan April hingga Mei 2023 di Laboratorium Pascapanen, Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) faktor tunggal yaitu perbedaan waktu antesis dengan lima perlakuan. Hasil percobaan menunjukkan bahwa akumulasi satuan panas ±1400 ˚C hari setelah antesis kurang tepat untuk dijadikan kriteria panen terukur pisang Raja Bulu untuk menghasilkan umur simpan yang panjang. Akumulasi satuan panas tersebut mampu dicapai pada 99-102 hari setelah antesis dengan daya simpan 8-13 hari setelah antesis. Perbedaan waktu antesis bunga dengan kriteria panen akumulasi satuan panas yang sama secara umum tidak mempengaruhi karakter panen, laju respirasi, kualitas fisik, serta kualitas kimia buah pisang Raja Bulu pada stadia kematangan pascapanen yang sama. Kata kunci: antesis, kualitas fisik, kualitas kimia, pascapanen, umur simpan
INTERNALISASI NILAI-NILAI PENDIDIKAN KI HADJAR DEWANTARA DALAM MODEL PEMBELAJARAN DI PERGURUAN TINGGI (Studi Eksperimen di Jurusan Tadris Matematika) winarso, widodo
Jurnal Math Educator Nusantara: Wahana Publikasi Karya Tulis Ilmiah di Bidang Pendidikan Matematika Vol 2 No 02 (2016): volume 2 no 2 tahun 2016
Publisher : Program Studi Pendidikan Matematika, Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (416.373 KB) | DOI: 10.29407/jmen.v2i02.223

Abstract

Department of Mathematics education curriculum implementation Based KKNI who have not provided the container development of character education for students. This can be seen from the learning process in college that still relies on aspects of increased knowledge. Achievement of learning on aspects of attitudes / values ​​still are administrative without being pushed on the feasibility of value investment education daily life. Applied learning models are still oriented to conventional learning eg discussions, lectures, discussion and assignment. It is necessary to present innovations in the learning model for students. Model-oriented learning in the context of nationalism (educational values ​​Ki Hadjar Dewantara). so that by applying the learning model of value investment Ki Hajar Dewantara education can increase educational purposes at universities. The method used in this study is quasi-experimental design with a Two-Group Test post-only design. The population in this study that students of Department of Mathematics Education. The sample research nonprobability sampling using purposive sampling technique. Experiments in which the class is used as the Class A total of 39 students and the class is a class B control as many as 33 students. Results of research dianataranya that the student response to the application of learning models planting educational values ​​Ki Hadjar Dewantara is quite good. Students learning attitude was quite good with a big achievement average score of 64.41. Effect of application of learning models planting educational values ​​Ki Hadjar Dewantara attitude towards learning in mathematics education majors and significant effect on average there are differences in learning outcomes experimental class is higher than population control class learning outcomes. It states that the application of learning models planting educational values ​​Ki Hadjar Dewantara effectively implemented in the Department of Mathematics Education.
The Influence of Emotional Health and Learning Readiness on Student Resilience in Social Studies Learning Indriyani; Winarso, Widodo; Mulyana, Asep
International Journal of Education and Humanities Vol. 5 No. 4 (2025): International Journal of Education and Humanities (IJEH)
Publisher : Ilmu Inovasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58557/(ijeh).v5i4.343

Abstract

Learning environments with high-pressure demands require students to possess resilience as a crucial capacity to adapt and persist through academic and social challenges. However, a lack of resilience among students often emerges as a fundamental issue that affects their learning outcomes and well-being. Resilience is influenced by several internal factors, particularly emotional health and learning readiness. This study aims to examine the influence of emotional health and learning readiness on student resilience in social studies learning. Employing a quantitative approach with a fact-exposure (ex post facto) design, the study uses multiple regression analysis to determine the relationship among variables. The sample consists of 76 junior high school students selected through purposive sampling. The findings reveal that (1) emotional health significantly affects student resilience, as indicated by a t-value of 2.621 and a p-value of 0.011; (2) learning readiness has a stronger significant influence on resilience, with a t-value of 11.703 and a p-value of 0.001; and (3) jointly, emotional health and learning readiness positively affect student resilience in social studies learning, as evidenced by an F-value of 112.909 and a significance level of 0.001. The coefficient of determination (R²) is 0.756, indicating that 75.6% of the variance in student resilience is explained by the two predictors. These results imply that educators and school institutions should prioritize strategies that enhance students' emotional well-being and preparedness to learn, in order to strengthen their resilience and support their academic success in demanding learning contexts
Implikasi Penerapan Metode Tutor Sebaya dalam Peningkatkan Hasil Belajar Fisika Siswa Di SMA Negeri 4 Cirebon Nuriyani, Yeni; Winarso, Widodo
N A T U R A L: Jurnal Ilmiah Pendidikan IPA Vol 8 No 1 (2021)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/natural.v8i1.8881

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Classroom action research using peer tutoring methods to improve learning outcomes in physics subject circular motion. This study's subjects were students of class X MIPA 3 SMA Negeri 4 Cirebon Cirebon City, West Java Province, totaling 32 students. The data collection technique is done by testing and observation. The research process was carried out in two cycles, each cycle consisting of four stages, namely: (1) action planning, (2) action implementation, (3) observation and interpretation, and (4) analysis and reflection. Based on the research that has been done, it can be concluded that there is an increase in learning outcomes in physics subject of student circular motion through the use of the Peer Tutor method. Pre-cycle data with a class average of 60.94 with a percentage of 28.13% complete learning or 9 students out of 32 students. The first cycle increased to 72.19% or 17 students completed with an average student grade of 53.13%, but this score had not yet reached the KKM that had been agreed upon. The second cycle increased to 81.25% or 26 students completed with an average student score of 84.84. Thus, the peer tutor method's application can improve learning outcomes in the Physics subject of circular motion so that it is feasible to be applied in SMA Negeri 4 Cirebon.
Fostering Interest and Critical Thinking in Mathematics Education: The Role of Integrated Evaluation Based on Linktree Platform Ria Riyati; Winarso, Widodo
International Journal of Education and Humanities Vol. 4 No. 1 (2024): International Journal of Education and Humanities (IJEH)
Publisher : Ilmu Inovasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58557/(ijeh).v4i1.212

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Based on a survey conducted by the United Nations Educational, Scientific, and Cultural Organization (UNESCO), the interest in learning among students in Indonesia is still relatively low, ranking 64th out of 120 countries. In 2007, the Global Institute reported that only 5% of students could solve high-level problem-solving tasks. This study aims to assess student responses, learning interests, and mathematical problem-solving skills following the implementation of Linktree. Linktree is an e-learning platform that offers ease in managing information despite being HTML-based. Moreover, it integrates seamlessly with various media, offers multiple tools, and presents customizable interfaces. The research methodology was quantitative, with a sample of 30 eighth-grade students from Junior high school. Data were collected through five mathematical problem-solving essay questions and questionnaires assessing student responses and learning interests post-Linktree usage. Findings revealed positive student responses towards Linktree, particularly in number patterns, with an average percentage of 84%, indicating excellent feedback. Post-Linktree usage, students exhibited an average percentage of 78% across four indicators of learning interest, classified as good. The students improved their mathematical problem-solving skills, with an average N-gain score of 0.64 and an N-gain percentage of 64.37%, categorized as moderately effective. Linktree's contribution to students' learning interest and mathematical problem-solving skills was significant, as evidenced by the hypothesis testing results, with a determination of 0.776 or 77.6% for learning interest and 0.629 or 62.9% for problem-solving skills. In conclusion, Linktree significantly contributes to students' learning interests and mathematical problem-solving skills
Appropriate Duration of Drought Stress for Madura Tangerine Flower Induction: Appropriate Duration of Drought Stress for Madura Tangerine Flower Induction Rahayu, Resa Sri; Poerwanto, Roedhy; Efendi, Darda; Widodo, Winarso Drajad
Jurnal Hortikultura Indonesia (JHI) Vol. 11 No. 2 (2020): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.11.2.82-90

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Cekaman kekeringan merupakan salah satu teknik yang dilakukan untuk menginduksi bunga jeruk keprok di luar musim dalam upaya memenuhi ketersediaan buah jeruk keprok sepanjang tahun. Durasi cekaman kekeringan yang tepat penting dipelajari untuk menghindari cekaman berat dan mendapatkan hasil bunga yang optimum. Penelitian ini bertujuan menentukan durasi cekaman kekeringan yang tepat untuk menginduksi bunga jeruk keprok dataran rendah varietas Madura. Penelitian dilaksanakan di Kebun Percobaan PKHT-IPB dengan ketinggian ± 300 mdpl dari bulan April-Mei 2019. Percobaan dirancang dengan RAK (Rancangan Acak Kelompok) dengan satu faktor perlakuan yaitu durasi cekaman kekeringan dengan lima taraf: tanpa cekaman kekeringan sebagai kontrol, durasi cekaman kekeringan satu minggu, durasi cekaman kekeringan dua minggu, durasi cekaman kekeringan tiga minggu dan durasi cekaman kekeringan empat minggu. Hasil penelitian menunjukkan bahwa durasi cekaman kekeringan mempengaruhi keberhasilan induksi bunga jeruk keprok Madura. Durasi cekaman kekeringan selama 2, 3 dan 4 minggu dengan nilai kadar air secara berturut-turut 81.81%, 65.21% dan 55.39% dari kapasitas lapang berhasil menginduksi bunga. Bunga muncul pada 3, 2 dan 1 minggu setelah rewatering dan pengairan rutin secara berturut-turut pada perlakuan durasi cekaman 2, 3 dan 4 minggu. Tiga minggu tanpa irigasi merupakan durasi cekaman kekeringan optimum untuk induksi bunga jeruk keprok Madura.
Heat Unit Establishment as Harvest Criteria for Raja Bulu Banana Widodo, Winarso Drajad; Suketi, Ketty; Fitriansyah, Aidil
Jurnal Hortikultura Indonesia (JHI) Vol. 12 No. 2 (2021): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.12.2.99-107

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Penentuan waktu panen pisang Raja Bulu berdasarkan umur buah menyebabkan kualitas matang pascapanen (matang peram) yang tidak seragam antar tandan. Penentuan kriteria panen yang lebih tepat telah dilakukan dengan mengkonversi umur bunga antesis hingga panen ke akumulasi satuan panas dan mendapatkan akumulasi satuan panas optimum 1 400 oC hari pada pertanaman pisang Raja Bulu di dataran rendah (± 10 m dpl). Untuk memantapkan hasil tersebut telah dilakukan percobaan dengan rancangan kelompok lengkap teracak dari 3 waktu antesis berinterval satu minggu dengan 4 ulangan pada satuan panas 1 400 oC hari. Penandaan bunga antesis dilakukan di Kebun Parakansalak, PTPN VIII, Sukabumi (670 m dpl) pada Juli 2018. Observasi pascapanen dilakukan di Laboratorium Pascapanen Departemen Agronomi dan Hortikultura, Fakultas Pertanian, IPB. Akumulasi satuan panas 1 400 oC hari dicapai pada 88-91 hari setelah antesis. Tingkat matang peram (skala warna kulit 6) dicapai pada 11-14 hari setelah panen. Pada tingkat matang peram yang sama perbedaan waktu antesis tidak mempengaruhi kriteria matang peram buah pisang Raja Bulu yang meliputi umur simpan, susut bobot, laju respirasi, kekerasan buah, kandungan padatan terlarut total, kandungan asam tertitrasi total, dan kandungan vitamin C. Kata kunci: antesis, matang peram, pascapanen, umur buah, umur simpan
Light Intensities Affect Canopy Architecture and Fruit Characteristics of Cayenne Pepper (Capsicum frutescens L.): Intensitas Cahaya Mempengaruhi Arsitektur Kanopi dan Karakteristik Buah Cabai Rawit (Capsicum frutescens L.) Febrianto, Miftakhur Rizki Hidayat; Santosa, Edi; Susila, Anas Dinurrohman; Zaman, Sofyan; Widodo, Winarso Drajad; Hapsari, Dhika Prita
Jurnal Hortikultura Indonesia (JHI) Vol. 15 No. 1 (2024): Jurnal Hortikultura Indonesia (JHI)
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.15.1.23-32

Abstract

Pemanenan cabai rawit secara mekanis sedang berkembang, namun faktor-faktor yang mempengaruhi arsitektur kanopi dan karakteristik buah masih kurang. Penelitian bertujuan untuk mengevaluasi pengaruh intensitas naungan terhadap arsitektur kanopi dan posisi buah pada cabai rawit untuk mendukung pengembangan alat panen cerdas. Percobaan dilaksanakan di Kebun Percobaan Babakan Sawah Baru, IPB pada bulan September 2021 sampai Maret 2022. Percobaan menggunakan rancangan bertingkat dengan tingkat naungan (tanpa naungan, 25%, 30%, 50%, 60%, 90%, dan 100%) sebagai petak utama dan waktu pemberian naungan (4, 6, 8, dan 10 minggu setelah tanam) sebagai sub-plot. Arsitektur kanopi dan posisi buah dipengaruhi oleh tingkat naungan dan waktu penerapannya. Tinggi tanaman bertambah dan kanopi melebar seiring bertambahnya tingkat naungan hingga 50%. Oleh karena itu, tingkat naungan harus dipertimbangkan dalam pengembangan metodologi pemanenan cerdas. Kata kunci: cabai rawit, perubahan iklim, tenaga kerja, intensitas cahaya rendah, arsitektur tanaman
Hubungan antara Self Confidence dengan Kemampuan Berpikir Kritis Siswa dalam Pembelajaran Matematika Winarso, Widodo; kholifah, siti nur; Toheri, Toheri
Edumatica : Jurnal Pendidikan Matematika Vol 8 No 1 (2018): Edumatica: Jurnal Pendidikan Matematika (April 2018)
Publisher : Department of Mathematics Education, Faculty of Teacher Training and Education, Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (436.797 KB) | DOI: 10.22437/edumatica.v8i01.4623

Abstract

Abstrak Penelitian ini bertujuan untuk mengetahui hubungan self confidence dengan kemampuan berpikir kritis siswa dalam pembelajaran matematika. Metode yang digunakan dalam penelitian ini adalah kuantitatif dan jenis penelitian korelasional. Instrumen pengumpulan data yang digunakan berupa angket tertutup dan tes uraian. Adapun desain penelitian yang digunakan yaitu the one shot case study design dan penelitian ini termasuk pre experimental design.Berdasarkan hasil uji korelasi dengan menggunakan perhitungan korelasi pearson diperoleh nilai korelasi sebesar 0,75yang artinyaterdapat hubungan yang positif antara self confidence dengan kemampuan berpikir kritis siswa dalam pembelajaran matematika. Sehingga semakin tinggi self confidence yang dimiliki siswa, maka akan semakin tinggi pula kemampuan berpikir kritis siswa. Kata Kunci: self confidence, berpikir kritis. The Correlations between Self Confidence and Student’s Critical Thinking Skill in Learning Mathematics Abstract This study aims to determine the relationship of self-confidence with students' critical thinking skills in learning mathematics. The method used in this research is quantitative and correlational research type. The data collection instruments used are closed questionnaire and description test. The research design used is the one-shot case study design and this research including pre-experimental design. Based on correlation test results by using correlation Pearson obtained the correlation value of 0.75 which means there is a positive relationship between self-confidence with students' critical thinking skills in learning mathematics. So the higher self-confidence that students have, the higher the students' critical thinking ability. Keywords: self confidence, critical thinking
Co-Authors , Kholidi A. A. Mattjik Aidil Fitriansyah Aissa, Siti Amalia Kusumawardhani Anas Dinurrohman Susila Ani Kurniawati Apriyanda Kusuma Wijaya ARIS ARIS, ARIS Arista, Mei Lianti Asep Mulyana Asnath M. Fuah Badrieh, Haian Amin budi manfaat, budi Cenra Intan Hartuti Tuharea Cucun Yuliana darwan darwan, darwan Dedi Cahyadi Dedi Cahyadi Dhika Prita Hapsari Dian Fahrianty Dian Pratanda Rizki Diny Dinarti DINY DINARTY, DINY Edi Djauhari P Edi Santosa Efendi, Darda Elvi Pebri Hasibuan Endah Retno Palupi Evi Setiawati Farah Maulida Faridah, dan Didah Nur Farokah, Esti Fatkhiyyah, I’aanatul Febrianto, Miftakhur Rizki Hidayat Fidianinta , G. A. Wattimena Gusreviani, Lisa Hasibuan, Elvi Pebri hendri raharjo, hendri Ikrimah, Ririn Ilmiah, Dede Malikhatul Indriyani Irni Furnawanthi Hindaningrum Jamaluddin, Moh Agus Juliana, Sely Kailola, Joan Joulanda Grace Karimah, Siti Asri Karmanah, Karmanah Kermite, Fiolita Ketty Suketi Lestari, Mutiara Dwi Lestiana, Herani Tri M. Luthfan Taris Maula, Lifa Muflikhatul Mei Lianti Arista Moh Agus Jamaluddin Mukdisari, Yurisqi Mustika Dwi Rahayu Najichun, Mohamad Nasib, Samson Bin Ni Made Armini Wiendi Nur Asmah, Nur Nuritno, Rizqi Nuriyani, Yeni Nurizzati, Yeti Nurkholis Nurkholis Nurma Izzati NURUL HAYATI Onwardono Rit Riyanto Permata, Indah Purwono Rahardjo, Rizky Rahayu, Resa Sri Rahayu, Yuli Aulia Rahayu, Yuli Aulia Rasyidi, Dhila Ardiani Resa Sri Rahayu Retty Nurfazizah Ria Riyati Ridwan, Ahmad Fauzi Rizki, Dian Pratanda Rizkiah, Rizkiah Rizky Rahardjo Roedhy Poerwanto Salatnaya, Hearty Samson Bin Nasib Sandra Arifin Aziz Saputro, Imron Gempur Septy Yurihastuti Siregar, Shella Elvira Sirojudin Wahid Siti Nur Kholifah Slamet Susanto Sobir Sobir Sofhya, Herlinda Nur'afwa Sofyan Zaman Sri Setyati Harjadi Sriani Sujiprihati Sriani Sujiprihati Sriani Sujiprihati Sukarma, Virna Selviani Suryo Wiyono Suteja Suteja, Suteja Syakira, Hadhona Fatmah Tamsik Udin Toheri Toheri, Toheri Trisnani, Maya Turi Handayani Willy Bayuardi Suwarno Winarno * **, Winarno * Yuliana, Cucun Yurihastuti, Septy