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Characterization of composting process and chemical composition of compost from recycling centers in Surabaya City, Indonesia Haryanta, Dwi; Sa’adah, Tatuk Tojibatus; Indarwati
Jurnal Ilmiah Pertanian Vol. 21 No. 1 (2024): Jurnal Ilmiah Pertanian
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/jip.v21i1.18004

Composting serves as a pivotal strategy in waste management, alleviating the burden on final disposal sites while simultaneously providing valuable fertilizer for urban agriculture. This study aims to delineate the intricacies of the composting process and elucidate the characteristics of compost derived from recycling centers/compost houses in Surabaya City, Indonesia. Employing a qualitative descriptive approach, this research scrutinized the composting process by delving into the origins of raw materials, procedural stages, and the chemical composition of the resultant compost. The composting materials encompassed household waste, market refuse, and fall foliage. Notably, composting occurred within an open aerobic system devoid of bio-activators. Chemical analysis revealed: C/N ratio (17.10 - 19.60), C-total (17.65% - 18.10%), N-total (0.95% - 1.12%), P2O5 (0.35% - 0.51%), K2O (0.39% - 0.41%), Cu (1.65 ppm - 2.01 ppm), Pb (2.05 ppm - 3.11 ppm), Cd (0.11 ppm - 0.24 ppm), and Zn (1.02 ppm - 1.14 ppm). Physically, the compost manifested as a dark brown substance, exhibiting a soil-like softness attributable to grinding, with temperatures oscillating between 41.90 to 55.00°C. Visually, the compost appeared mature and primed for utilization based on color and texture criteria; however, indicators such as C/N ratio and temperature suggest an immature state rendering the compost unsuitable for immediate planting. To ensure optimal maturity conducive to plant growth, it is recommended that users store the compost for a minimum of one month before application, thereby fostering its maturation process.

Kajian Aplikasi Kompos Sampah Organik Perkotaan untuk Tanaman Bawang Merah pada Sistem Urban Farming: Study of The Application of Urban Organic Waste Compost for Shallot Cultivation in an Urban Farming System Haryanta, Dwi; Suryaningsih, Dwie Retna; Fauzi, Muhammad Iqbal
Agrocentrum Vol. 3 No. 2 (2025): Agrocentrum
Publisher : Agriculture Faculty - UPN "Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/agrocentrum.v3i2.104

The problem of accumulating organic waste can be solved by converting it into compost and can be used to strengthen food security in urban areas. The purpose of this research is to find a solution to the problem of urban organic waste burden into an economically valuable resource by processing it into compost, studying the effect of urban organic waste compost on the growth and yield of vegetable plants (shallots), and providing a fertile and affordable planting medium, reducing dependence on conventional fertilizers that must be imported from outside the city. Research on the application of compost produced from a compost house for shallot plants with 4 treatments: pure soil planting medium, soil planting medium plus leaf compost, soil planting medium plus young coconut fiber compost, and soil planting medium plus rain tree leaves. The study used a randomized block design with seven replications. The results of the study were that the best growth and yield of shallot plants were obtained from plants planted in soil media without being mixed with compost, while the worst were from plants planted in soil media with fresh rain tree leaf compost. The conclusion of the study was that the compost used was not yet mature because the composting process was only 28-35 days, or with rain tree leaves without a composting process. The use of immature compost or organic material that has not fully decomposed will actually have a negative impact on plants. Plants and microbes compete for nutrients or plants can be poisoned by compounds produced by the composting process (such as ammonium compounds). The implication of this research is that compost utilization will have a positive impact when the compost is fully mature. Compost producers, such as compost houses or recycling centers (PDU) in Surabaya, should release mature compost or socialize to the public that compost produced from compost houses needs to be incubated for at least 30 days before it can be used for urban farming activities.

Analisa Keputusan Petani dalam Penggunaan Pestisida untuk Pengendalian Hama dan Penyakit Tanaman Tomat (Solanum lycopersicum): Analysis of Farmers' Decisions on Pesticide Use to Control Pests and Diseases of Tomato Plants (Solanum lycopersicum) Haryanta, Dwi; Susilo, Achmadi; Prayogo, Bagas Tri
Agrocentrum Vol. 3 No. 2 (2025): Agrocentrum
Publisher : Agriculture Faculty - UPN "Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/agrocentrum.v3i2.105

Penggunaan pestisida yang kurang tepat oleh petani merupakan isu kritis yang dipengaruhi oleh faktor-faktor psikologis, perilaku, sosial ekonomi, dan regulasi. Tujuan penelitian adalah untuk menganalisis proses pengambilan keputusan petani dalam menggunakan pestisida untuk mengendalikan hama dan penyakit tanaman tomat. Penelitian kuantitatif diskriptif dengan kuesioner disusun berdasarkan lima dimensi persepsi petani tentang keberadaan hama dan penyakit tanaman tomat dan cara pengendaliannya meliputi: (1) Persepsi petani terhadap keberadaan hama dan penyakit (X1), (2) Persepsi petani terhadap terjadinya kerusakan pada tanaman (X2), (3) Persepsi petani terhadap terhadap Teknik pengendalian hama dan penyakit (X3), (4) Persepsi petani terhadap penggunaan pestisida (X4), dan (5) Persepsi petani terhadap efek negatif pestisida (Y). Temuan penelitian adalah para petani tomat mengetahui adanya hama dan penyakit yang menyebabkan kerusakan pada tanaman tomat. Oleh karena itu diperlukan tindakan pengendalian dan yang paling praktis adalah dengan menggunakan pestisida. Para petani mengetahui dan menyadari bahwa penggunaan pestisida berdampak negatif terhadap lingkungan dan kesehatan konsumen. Kesimpulan penelitian adalah petani tomat selalu menggunakan pestisida (insektisida dan fungisida) untuk mengendalikan hama dan penyakit agar mendapatkan hasil panen yang dapat dijual di pasar. Keselamatan konsumen dan kelestarian lingkungan belum menjadi menjadi pertimbangan dalam penggunaan pestisida. Perlu mendapatkan perhatian bagi penyusun kebijakan khususnya dari Dinas Pertanian untuk mensosialisasikan dan menyelenggarakan pelatihan kepada petani akan Teknik pengendalian hama yang aman dan berkelanjutan. Penggunaan pestisida seharusnya menjadi langkah terakhir dalam pengendalian hama dan penyakit.

TEKNOLOGI PRODUKSI PELET IKAN BERBASIS MAGGOT UNTUK PENGUATAN PRAKTIK EKONOMI SIRKULAR DI KAMPOENG OASE SONGO SIMOMULYO SURABAYA Haryanta, Dwi; Solfaine, Rondius; Revitriani, Marina; Candra, Adi; Sadarman, Sadarman
Jurnal Pepadu Vol 6 No 3 (2025): Jurnal Pepadu
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v6i3.8195

This community engagement program was designed to strengthen the capacity of residents in Kampoeng Oase Songo, Simomulyo, Surabaya, in managing organic waste through the cultivation of maggots (Hermetia illucens) and the production of high-nutrient fish pellets as an alternative feed source. The program adopted an appropriate technology approach consisting of maggot farming training, pellet formulation, digital business record-keeping, and digital marketing workshops. The formulated pellets achieved a crude protein level of 30–32% and metabolizable energy of 2900–3100 kcal/kg, thereby meeting the nutritional requirements for both fish and poultry feed. In parallel, the digital marketing training enhanced participants’ capacity in product branding, content creation, and the effective use of e-commerce platforms. Overall, the program not only improved residents’ technical and entrepreneurial skills but also reinforced local circular economy practices. Furthermore, it provided tangible contributions to the achievement of the Sustainable Development Goals (SDGs), particularly in advancing food security (SDG 2) and promoting sustainable waste management (SDG 12).

Empowering Gen Z In Millennial Agricultural Development Haryanta, Dwi; Maryoni, Hamdi Sari; Rozci, Fatchur
Journal of Applied Plant Technology Vol 4 No 2 (2025): Journal of Applied Plant Technology (JAPT)
Publisher : Agrotechnology Study Program, Faculty of Agriculture, Wijaya Kusuma Surabaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/3f6kpw37

A significant problem is the lack of interest among Indonesian youth in pursuing careers in agriculture, which has profound implications for the nation's food security and economic stability. This research aims to identify agricultural development strategies that appeal to millennials and Generation Z to ensure food self-sufficiency, achieve a sustainable agricultural system, and reduce unemployment. Data sources for the research included academic journals, books, research reports, and articles published in scientific databases such as Google Scholar, Scopus, IEEE Xplore, and ScienceDirect. Inclusion and exclusion criteria were applied to ensure that only relevant and high-quality literature was included in the analysis. Agricultural development strategies to attract millennials or Generation Z include technology-based agricultural development, particularly digital technology, entrepreneurship-based agricultural development, sustainable agricultural systems, community-based and collaborative agriculture, and market-oriented agricultural product development. The implications of the research findings for education and policymakers are to avoid introducing millennials or Generation Z to conventional agriculture, which has been viewed negatively and unattractively, and to instead introduce them to a millennial-centered agriculture (oriented towards Generation Z's agricultural needs)

Edukasi Pembuatan Spesimen Tumbuhan dan Hewan sebagai Sumber Belajar Keanekaragaman Hayati Di Sanggar Bimbingan Wira Damai, Batu Caves, Selangor, Malaysia Isrianto, Pramita Laksitarahmi; Marmi, Marmi; Sunaryo, Sunaryo; Chamidah, Dina; Haryanta, Dwi; Rohma, Siti Ainuna; Marmi; Sunaryo; Siti Ainuna Rohma
Sasambo: Jurnal Abdimas (Journal of Community Service) Vol. 8 No. 1 (2026): Februari
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat (LITPAM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/92q5p279

Keanekaragaman hayati merupakan konsep fundamental dalam pembelajaran biologi, namun pada praktiknya masih sering disampaikan secara teoritis, khususnya di lingkungan pendidikan nonformal. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pemahaman dan keterampilan siswa terhadap keanekaragaman hayati melalui edukasi pembuatan awetan spesimen tumbuhan dan hewan sebagai media pembelajaran. Kegiatan dilaksanakan pada 21 November 2025 di Sanggar Bimbingan Wira Damai, Batu Caves, Selangor, Malaysia, dengan melibatkan 20 siswa sebagai peserta. Metode pelaksanaan menggunakan pendekatan partisipatif-edukatif yang meliputi tahap perencanaan, pelaksanaan berupa sosialisasi, penyuluhan, pelatihan, dan demonstrasi pembuatan spesimen, serta tahap evaluasi. Teknik pengawetan yang digunakan memanfaatkan bioplastik sebagai bahan ramah lingkungan. Evaluasi dilakukan melalui angket dan observasi untuk mengukur antusiasme, kepuasan, dan pemahaman peserta. Hasil kegiatan menunjukkan tingkat kepuasan peserta sebesar 90%, peningkatan pemahaman keanekaragaman hayati sebesar 88%, serta ketertarikan tinggi terhadap penggunaan spesimen awetan sebagai media pembelajaran. Kegiatan ini efektif dalam meningkatkan keterampilan praktis, kesadaran lingkungan, dan pembelajaran biologi yang kontekstual. Education on Preserved Specimen Preparation as a Biodiversity Learning Medium at Wira Damai Learning Center, Malaysi Biodiversity is a fundamental concept in biology education; however, in non-formal educational settings it is often delivered in a predominantly theoretical manner. This community service program aimed to enhance students’ understanding and practical skills related to biodiversity through hands-on activities involving the preparation of preserved plant and animal specimens as learning media. The activity was conducted on November 21, 2025, at Wira Damai Learning Center, Batu Caves, Selangor, Malaysia, and involved 20 student participants. A participatory–educational approach was employed, consisting of planning, implementation through socialization, instruction, training, and specimen-making demonstrations, followed by an evaluation stage. Environmentally friendly bioplastic materials were introduced as an alternative preservation technique. Program evaluation was carried out using questionnaires and observations to assess participants’ satisfaction, enthusiasm, and conceptual understanding. The results indicated a high level of participant satisfaction (90%), an increase in biodiversity understanding (88%), and strong interest in the use of preserved specimens as instructional media. Overall, the program effectively improved students’ practical skills, environmental awareness, and contextual learning experiences in biology within a non-formal education setting.

Edukasi Pembuatan Spesimen Tumbuhan dan Hewan sebagai Sumber Belajar Keanekaragaman Hayati Di Sanggar Bimbingan Wira Damai, Batu Caves, Selangor, Malaysia Isrianto, Pramita Laksitarahmi; Marmi, Marmi; Sunaryo, Sunaryo; Chamidah, Dina; Haryanta, Dwi; Rohma, Siti Ainuna; Marmi; Sunaryo; Siti Ainuna Rohma
Sasambo: Jurnal Abdimas (Journal of Community Service) Vol. 8 No. 1 (2026): Februari
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat (LITPAM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/92q5p279

Keanekaragaman hayati merupakan konsep fundamental dalam pembelajaran biologi, namun pada praktiknya masih sering disampaikan secara teoritis, khususnya di lingkungan pendidikan nonformal. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pemahaman dan keterampilan siswa terhadap keanekaragaman hayati melalui edukasi pembuatan awetan spesimen tumbuhan dan hewan sebagai media pembelajaran. Kegiatan dilaksanakan pada 21 November 2025 di Sanggar Bimbingan Wira Damai, Batu Caves, Selangor, Malaysia, dengan melibatkan 20 siswa sebagai peserta. Metode pelaksanaan menggunakan pendekatan partisipatif-edukatif yang meliputi tahap perencanaan, pelaksanaan berupa sosialisasi, penyuluhan, pelatihan, dan demonstrasi pembuatan spesimen, serta tahap evaluasi. Teknik pengawetan yang digunakan memanfaatkan bioplastik sebagai bahan ramah lingkungan. Evaluasi dilakukan melalui angket dan observasi untuk mengukur antusiasme, kepuasan, dan pemahaman peserta. Hasil kegiatan menunjukkan tingkat kepuasan peserta sebesar 90%, peningkatan pemahaman keanekaragaman hayati sebesar 88%, serta ketertarikan tinggi terhadap penggunaan spesimen awetan sebagai media pembelajaran. Kegiatan ini efektif dalam meningkatkan keterampilan praktis, kesadaran lingkungan, dan pembelajaran biologi yang kontekstual. Education on Preserved Specimen Preparation as a Biodiversity Learning Medium at Wira Damai Learning Center, Malaysi Biodiversity is a fundamental concept in biology education; however, in non-formal educational settings it is often delivered in a predominantly theoretical manner. This community service program aimed to enhance students’ understanding and practical skills related to biodiversity through hands-on activities involving the preparation of preserved plant and animal specimens as learning media. The activity was conducted on November 21, 2025, at Wira Damai Learning Center, Batu Caves, Selangor, Malaysia, and involved 20 student participants. A participatory–educational approach was employed, consisting of planning, implementation through socialization, instruction, training, and specimen-making demonstrations, followed by an evaluation stage. Environmentally friendly bioplastic materials were introduced as an alternative preservation technique. Program evaluation was carried out using questionnaires and observations to assess participants’ satisfaction, enthusiasm, and conceptual understanding. The results indicated a high level of participant satisfaction (90%), an increase in biodiversity understanding (88%), and strong interest in the use of preserved specimens as instructional media. Overall, the program effectively improved students’ practical skills, environmental awareness, and contextual learning experiences in biology within a non-formal education setting.

Employee satisfaction as a support for higher education institutional performance Dwi Haryanta; Kaswadi; Reza Syehma Bahtiar; Wibowo Amiruddin Hadi
Jurnal Konseling dan Pendidikan Vol. 13 No. 4 (2025): JKP
Publisher : Indonesian Institute for Counseling, Education and Therapy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/1139800

Employee satisfaction is a critical factor influencing the performance of higher education institutions. This study aimed to assess employee satisfaction at Universitas Wijaya Kusuma Surabaya, focusing on (a) measuring the level of employee satisfaction, (b) identifying factors hindering employee performance, (c) evaluating the institution’s human resource management practices, and (d) proposing improvement strategies to improve employee performance and support institutional goals. This study used a quantitative research design, with a sample of 72 employees selected through proportional random sampling across various work units. The study assessed six dimensions of employee satisfaction: (1) satisfaction with institutional policies on human resource management, (2) satisfaction with leadership commitment, (3) satisfaction with compensation and welfare, (4) satisfaction with the work environment, (5) satisfaction with career development, and (6) satisfaction with competency development. The findings showed the following results: (a) employees were dissatisfied with institutional policies on human resource management (mean score 2.14), (b) dissatisfied with leadership commitment (mean score 2.28), (c) satisfied with compensation and welfare (mean score 2.54), (d) satisfied with the work environment (mean score 2.54), (e) dissatisfied with career development (mean score 1.82), and (f) dissatisfied with competency development (mean score 1.82). Despite these challenges, employees showed high integrity toward the institution (mean score 3.53). Therefore, it can be concluded that employee dissatisfaction negatively impacted institutional performance, as reflected in the university’s accreditation ranking of B (very good).

The Importance of Understanding Learning Models for Prospective Agriculture Vocational High School Teachers Dwi Haryanta; Pramita Laksitarahmi Isrianto; Marmi Marmi; Sunaryo Sunaryo; Endrayana Putut Laksminto Emanuel
QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama Vol. 18 No. 1 (2026): Qalamuna - Jurnal Pendidikan, Sosial, dan Agama
Publisher : Lembaga Penerbitan dan Publikasi Ilmiah Program Pascasarjana IAI Sunan Giri Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37680/qalamuna.v18i1.8729

This study aims to examine the ability of teacher professional program students to identify instructional problems and formulate effective solutions through classroom action research, and develop a reflective learning model based on classroom action research findings to support teachers’ professional development. This qualitative research design adopted a transcendental phenomenological approach and involved 17 prospective Vocational High School (VHS) teachers participating in the Teaching Practicum Program in Purwosari, Pasuruan, and Gondang, Nganjuk. They were selected purposively based on data accessibility. Data were collected through classroom observations and semi-structured interviews and analyzed to identify patterns in problem identification, instructional decision-making, and the effectiveness of learning models implemented. The results showed that teachers improved their teaching practices by implementing student-centered strategies, such as project-based and problem-based learning, as well as other context-responsive approaches. The development of adaptive learning models that address both teacher and student needs led to improvements in average student achievement and higher completion rates of learning materials. The findings suggest that instructional quality in VHS, particularly in agribusiness, can be strengthened through the systematic application of reflective learning models grounded in classroom action research. Teachers should emphasize the development of classroom action research competencies to enable prospective teachers to diagnose instructional challenges and implement evidence-based solutions effectively.

Peningkatan Kandungan Nutrisi Buah Tomat (Solanum licopersicum) dengan Aplikasi Pupuk Organik Limbah Hewan Dwi Haryanta; Fungki Sri Rejeki
JURNAL AGROTEKNOLOGI MERDEKA PASURUAN - JAMP Vol 10 No 1 (2026): JUNI
Publisher : Universitas Merdeka Pasuruan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51213/jamp.v10i1.180

Konsep ekonomi sirkular menginspirasi masyarakat global dengan menciptakan peluang bisnis baru yang mengubah limbah menjadi pupuk organik untuk menghasilkan bahan pangan yang sehat dan menyehatkan. Tujuan penelitian adalah (1) mengetahui pengaruh pupuk organik dari limbah hewan terhadap kandungan nutrisi pada buah tomat, (2) untuk menganalisis perubahan kandungan nutrisi seperti vitamin, mineral, dan zat antioksidan di dalam buah tomat setelah aplikasi pupuk organik dari limbah hewan, (3) untuk menganalisa sejauh mana pupuk organik dari hewan dapat menggantikan pupuk kimia buatan. Penelitian menggunakan percobaan faktorial yang terdiri dari 2 (dua) faktor perlakuan. Faktor 1 adalah perlakuan bahan dasar pupuk organik terdiri dari 5 level yaitu P0 = tidak diberi pupuk organik (sebagai kontrol), PD: Pupuk pelet dari limbah darah sapi, PI: Pupuk pelet dari limbah ikan 18 gr/tanaman,, PT: Pupuk pelet dari cangkang telur 18 gr/tanaman, dan PC: Pupuk pelet dari campuran tepung darah sapi, limbah ikan dan cangkang telur 18 gr per tanaman. . Faktor 2 adalah dosis pupuk kimia (NPK) terdiri dari 2 level K0 = tidak diberi pupuk NPK, K1: diberi NPK 30 gr/tanaman. Temuan penelitian adalah (1) perlakuan pupuk organik dari limbah ikan dan dari limbah darah sapi menyebabkan pertumbuhan dan hasil tanaman tomat lebih baik dibanding perlakuan yang lain termasuk perlakuan control, (2) perlakuan pupuk kimia buatan (NPK) menyebabkan pertumbuhan dan hasil lebih baik dibanding perlakuan lainnya, (3) perlakuan pupuk organik dari limbah ikan dan dari limbah darah sapi menyebabkan kandungan nutrisi dalam buah tomat lebih baik dibanding perlakuan yang lain termasuk perlakuan control, (4) perlakuan pupuk kimia buatan (NPK) menyebabkan kandungan nutrisi dalam buah tomat lebih baik dibanding perlakuan lainnya. Kesimpulan penelitian adalah pupuk organik dari limbah hewan dapat meningkatkan kandungan nutrisi dalam buah tomat, dan dapat menggantikan pupuk kimia buatan yang selama ini selalu dipakai oleh masyarakat.

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