Ignatius Suprih Sudrajat

@ustjogja.ac.id

Agriculture
UNIVERSITAS SARJANAWIYATA TAMANSISWA

RESEARCH INTERESTS

Agribusiness, Agriculture, Social Economics Agriculture, Demography, Environment, Plantation
5

Scopus Publications

Scopus Publications

  • Economic Circular through Waste Management Programs: A study in Giwangan Village, Yogyakarta
    Bernadus Tresno Sumbodo, Siti Rochmah Ika, Sardi Sardi, Fitri Nuryanti, Ignatius Suprih Sudrajat, Ari Kuncara Widagdo
    E3s Web of Conferences, 2025
    This study documents a village-level application of the triple helix model for urban waste management after the permanent closure of the Piyungan Landfill in Yogyakarta, Indonesia. It is among the first studies to explore how waste management programs at the village scale, such as biopore composting, longan tree planting, maggot cultivation, and urban fish farming, can contribute to the circular economy. Using a participatory action research approach with 60 participants from four neighborhood associations, the results show that nearly 100% of organic waste was successfully managed within the community. The programs produced 250 kg of compost, 50 kg of catfish, and 80 kg of tilapia in the first harvest. Furthermore, each tree yielded 85 kg of longans, benefiting the local community. These findings underscore the actual feasibility of community-based circular economy models and provide answers for other urban villages encountering similar waste management issues. The study indicates that combining biological waste solutions with community-driven efforts may serve as a sustainable approach to urban trash management, decreasing reliance on landfills and yielding economic advantages. This model could be scaled and adapted to other urban areas across Indonesia and globally to foster more sustainable, waste-conscious communities.
  • Effect of biosaka dose combine with plant growth promoting rhizobacteria on growth and yield of rice plants in Bantul Regency Indonesia
    Bulgarian Journal of Agricultural Science, 2025
  • The effect of watering and ameliorant on sandy coastal on yield and carbohydrate, protein content of mung bean (Vigna radiata L)
    Yekti Maryani, Ign. Suprih Sudrajat
    Aip Conference Proceedings, 2023
  • Effect of institution on production cost efficiency of organic rice farming in Indonesia
    Dlsu Business and Economics Review, 2018
  • Effect of social factors in stochastic frontier profit of organic rice farming in boyolali
    Bulgarian Journal of Agricultural Science, 2017