- Kajian upaya peningkatan pengembalian kredit petani peserta PIR perkebunan (Improvement of credit repayment of estate crop NES participants), Team Member, 2002, Direktur Jenderal Bina Produksi Perkebunan
- Smallholder tree crop production and poverty alleviation project, Team Member, 2001-2002, Asian Development Bank and Pusat Penelitian dan Pengembangan Tanaman Perkebunan.
- Studi kebijakan revitalisasi industri gula Indonesia ( A study on the revitalisation of the Indonesian sugar industry), Team Member, 2001, Asian Development Bank and Direktotarat Bina Produksi Perkerbunan
- Pengembangan model industri gula dengan pendekatan model ekonomi politik (Development of a sugar industry model using an economic and politic framework), Team Leader, 2000-2002, Badan Penelitian dan Pengembangan Pertanian.
- Tarif impor gula Indonesia dengan pendekatan kompromi' (Indonesia's sugar import tariff using a compromise approach), Team Leader, 1999-2000, Badan Penelitian dan Pengembangan Pertanian.
- Pengujian dengan model interaktif multi party multi objective untuk beberapa aturan pola PIR Tebu' (The use of a multy party multy objective model to formulate some rules in sugar cane NES) Team Leader, 1997-1998, Kantor Menteri Negara Riset dan Teknologi.
- Dampak keberhasilan Putaran Uruguay terhadap perdagangan dan industri kopi dunia (Impacts of the Uruguay Round on world coffee trade and industry), Riset Unggulan Terpadu, Team Leader, 1997-1999 Kantor Menteri Negara Riset dan Teknologi.
- Analisis dampak globalisasi terhadap perdagangan dan kebijaksanaan kakao Indonesia (Impacts of cocoa trade liberalization on world and Indonesian cocoa industries), Team Leader, 1997-1998, Pusat Penelitian Sosial Ekonomi Pertanian.
- Daya saing dan efisiensi penggunaan sumberdaya minyak sawit mentah (CPO) Indonesia', (Competitiveness and efficiency resources use of Indonesian crude palm oil), Team Leader, 1996-1997, Kantor Menpangan.
- Daya saing dan efisiensi penggunaan sumberdaya komoditas pisang Indonesia', (Competitiveness and efficiency resources use of Indonesian banana), Team Leader, 1996-1997, Kantor Menpangan.
- Proyeksi produksi CPO Indonesia: suatu pendekatan vintage (Projection of Indonesian CPO production: a vintage approach), Team Leader, 1996-1997, Pusat Pengkajian dan Pengembangan Agribisnis.
- Dampak Putaran Uruguay terhadap minyak nabati' (Impacts of the Uruguay Round on edible oil industries), Team Leader, 1995-1996, BULOG.
- Perdagangan minyak nabati dunia, (World vegetable oil trades), Team Member, 1995-1996, BOLOG
- Faktor-faktor yang mempengaruhi investasi di sub sector perkebunan (Factors affecting investment in perennial crops sub sector), Team Member, 1995-1996, Badan Penelitian dan Pengembangan Pertanian.
- An economic model of world crude palm oil' (Model ekonomi minyak sawit mentah dunia), Team Leader, 1994-1995 Badan Penelitian dan Pengembangan Pertanian.
- Kajian investasi agribisnis perkebunan dalam rangka peningkatan peran swasta (A study to increase private investments on agribusiness of perennial crops), Team Member ,1994-1995, Badan Litbang Pertanian.
- Tingkat kemampuan pelunasan hutang petani PIR perkebunan di Proyek NES VII, Sambas, PTP XII, Kalimantan Barat (The ability of NES participants in repaying their loans), Team Leader, 1993-1994, TK PIR.
- Model ekonomi minyak sawit mentah domestik' (An economic model of domestic crude palm oil market), Team Leader, 1993-1994, Badan Litbang Pertanian.
- Prospek pasar kakao dunia' (Prospects of world cocoa market), Team Leader, 1993-1994, Pusat Pengkajian dan Pengembangan Agribisnis.
- Dampak penerapan teknologi dan pemasaran kopi terhadap pembangunan wilayah di Prafi, Manokwari' (Impacts of the introduction of coffee-technology processing and marketing on regional development in Prafi, Manokwari), Team Leader, 1992-1994, ARMP.
- Pengembangan agribisnis perkebunan di Irian Jaya (Agribusiness Development of Perennial Crops in Irian Jaya), Team Leader, 19923-1993, ARMP.
- Pengaruh curah hujan terhadap pola produksi bulanan karet klon GT 1 (Effect of rainfall on the monthly- production pattern of rubber clone GT 1), Team Member. 1991-1992, Balai Penelitian Perkebunan Sembawa.
- Hubungan antara karakteristik dan dinamika anggota kelompok tani dengan keberhasilan kebun, (Relationships between the characteristics of farm group members and the nature of their rubber plantation), Team Leader, 1991-1992, Balai Penelitian Perkebunan Sembawa.
- Rubber and oil-palm-based farming system for the Southern Sumatra Transmigration areas (Pola usahatani karet dan kelapa sawit untuk daerah transmigrasi di Sumatera Selatan), Team Leader, 1990-1991, Balai Penelitian Perkebunan Sembawa.
- Analisis distribusi pendapatan dan konsumsi pada beberapa lokasi karet rakyat' (Analysis of income and consumption distribution in several rubber smallholder locations), Team Leader, 1990-1991, Balai Penelitian Perkebunan Sembawa.
- Analisis usahatani pada tiga proyek pengembangan karet rakyat ' (A farming analysis on three rubber smallholder development projects), Team Member 1987-1988, TK PIR.
- Hubungan antara latar belakang dan tingkat keberhasilan peserta proyek SRDP' (Relationships between the background and success levels of SRDP participants), Team Leader, 1984-1985, Balai Penelitian Perkebunan Sembawa.
Estimasi ukuran contoh untuk penelitian karet rakyat '(Estimation of sample size for smallholder rubber research), Team Leader, 1984, Balai Penelitian Perkebunan Sembawa.
- Estimasi ukuran contoh untuk penelitian karet rakyat '(Estimation of sample size for smallholder rubber research), Team Leader, 1984, Balai Penelitian Perkebunan Sembawa.
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