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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)

Tracer Study Sebagai Instrumen Evaluasi Kualitas Layanan Institusi Pendidikan Tinggi Haryanta, Dwi; Djojo Dihardjo
Mudir : Jurnal Manajemen Pendidikan Vol. 8 No. 1 (2026): Januari : Mudir : Jurnal Manajemen Pendidikan
Publisher : Prodi. Manajemen Pendidikan Islam, Fakultas Tarbiyah, Institut Pesantren Sunan Drajat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55352/mudir.v8i1.1723

Institusi Pendidikan tinggi berharap lulusannya dapat terserap di dunia kerja dan berperan dalam pengembangan bidang pekerjaan. Kesuksesan para-alumni di masyarakat akan menjadi indikator kualitas layanan pendidikan dan akan menentukan keberlanjutan eksistensi institusi Pendidikan tinggi tersebut. Penelitian bertujuan untuk melacak kinerja alumni dalam bekerja di dunia industri dan dunia usaha, yang hasilnya akan digunakan sebagai evaluasi kinerja institusi Pendidikan tinggi. Penelitian menggunakan metode penelitian deskriptif kuantitatif untuk memperoleh informasi tentang kinerja lulusan/alumni Universitas Wijaya Kusuma Surabaya. Variabel penelitian meliputi: (a) respon rate, (b) masa tunggu mendapatkan pekerjaan setelah lulus, (c) Besaran gaji/pendapatan yang diterima pada awal bekerja, (d) jenis kegiatan akademik yang dianggap memberikan aspek pembelajaran dan (e) tanggapan pengguna terhadap kompetensi lulusan pada awal bekerjaHasil penelitian menyimpulkan (1) Respon rate tracer study di Universitas Wijaya Kusuma relative tinggi di atas 50%, (2) masa tunggu untuk mendapatkan pekerjaan setelah lulus relative singkat, (3) pendapatan para alumni dari pekerjaan pertamanya relatif tinggi, yaitu lebih besar dari UMR kota Surabaya, (4) Keserasan horizontal yaitu keeratan antara kompetensi bidang studi dengan bidang pekerjaan relatif tinggi, dan (5) kegiata akademik yang dianggap mempunyai aspek pembelajaran adalah kuliah, praktikum dan diskusi. Masing-masing fakultas dan program studi memanfaatkan hasil tracer studi sebagai bahan evaluasi terhadap layanan Pendidikan yang diberikan kepada mahasiswa. Evaluasi kurikulum dirumuskan dalam rangka menghasilkan lulusan dengan kompetensi yang dibutuhkan oleh dunia usaha dan dunia kerja sehingga para lulusan cepat berkeja pada bidang yang sesuai dengan kompetensinya, dan mendapatkan penghasilan yang memadai.

THE INTERNSHIP PROGRAM BRIDGES THE COMPETENCY GAP BETWEEN AGRICULTURAL VOCATIONAL EDUCATION GRADUATES AND INDUSTRY WORK READINESS STANDARDS Haryanta, Dwi; Emanuel, Endrayana Putut Laksminto
Inteligensi : Jurnal Ilmu Pendidikan Vol 8, No 2 (2025)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/ilg.v8i2.7496

This study examines initiatives to close the gap between graduates of agricultural vocational education's academic proficiency and their preparedness for the workforce based on graduate users' standards, specifically those of the industrial sector. This study looks at the competency accomplishments of graduates in agriculture education during the fourth industrial revolution, a time when the global labor market is competitive and full of obstacles. We start this conversation by gathering information from foreign periodicals and literature sources. A qualitative narrative analysis that incorporates a coding system, critical review, and a conclusion that satisfies the findings' validity and reliability principles. Google Docs, Google Scholar, and Eric journals with a range of publications from 2015 to 2025 were used. We looked at evaluation methods and learning tactics and procedures, discovered that the majority of studies on the academic proficiency of graduates of agricultural vocational education fall short in terms of practical field competences, which are necessary to achieve industry and business work-readiness norms, promote cooperation between agricultural vocational education institutions and the agricultural industry/business world, which employs graduates, proposes methods and solutions. Most publications promote the inclusion of the skills and work competencies required of graduates in the curriculum as a guide for designing learning outcomes, learning models, and methodologies. Students can put their practical knowledge and skills to the agricultural sector, businesses and academic institutions collaborate to plan, implement, and evaluate partnerships. The results will greatly enhance the cooperation between agricultural educational establishments and the commercial and industrial sectors that hire agricultural graduates.

Employee satisfaction as a support for higher education institutional performance Haryanta, Dwi; Kaswadi; Bahtiar, Reza Syehma; Amiruddin Hadi, Wibowo
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).

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.

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