The Existence of Seed Resource Management Unit and Seed Grower to Support the Sustainable Certified Rice Seed in North Sumatera Province by Romulo Siagian, Deddy, Chairuman, Novia, Aryati, Vivi, Fatimah Batubara, Siti, Atrisiandy, Khasril

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Sustainable shallot production achievement through analyzing the land suitability and introducing the proper agronomic cultivation practices in samosir regency by Napitupulu, Delima, Nurzannah, Sri Endah, Siagian, Deddy Romulo

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Spatial-Temporal Changes in Water Supply and Demand in the Citarum Watershed, West Java, Indonesia Using a Geospatial Approach by Nahib, Irmadi, Amhar, Fahmi, Wahyudin, Yudi, Ambarwulan, Wiwin, Suwarno, Yatin, Suwedi, Nawa, Turmudi, Turmudi, Cahyana, Destika, Nugroho, Nunung Puji, Ramadhani, Fadhlullah, Siagian, Deddy Romulo, Suryanta, Jaka, Rudiastuti, Aninda W, Lumban-Gaol, Yustisi, Karolinoerita, Vicca, Rifaie, Farid, Munawaroh, Munawaroh

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Understanding the relationship among the determinants of rice cropping index in Deli Serdang Regency by Napitupulu, Delima, Siagian, Deddy Romulo, Simatupang, Sortha, Girsang, Setia Sari, Marpaung, Imelda

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Assessing the Challenges and Opportunities of Agricultural Information Systems to Enhance Farmers’ Capacity and Target Rice Production in Indonesia by Santoso, Agung Budi, Girsang, Setia Sari, Raharjo, Budi, Pustika, Arlyna Budi, Hutapea, Yanter, Kobarsih, Mahargono, Suprihatin, Agus, Manurung, Erpina Delina, Siagian, Deddy Romulo, Hanapi, Sidiq, Purba, Tommy, Parhusip, Dorkas, Budiarti, Sri Wahyuni, Wanita, Yeyen Prestyaning, Hatmi, Retno Utami, Girsang, Moral Abadi, Haloho, Lermansius, Waluyo, Suparwoto, Yustisia, Sudarmaji

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Assessing Rice Production Sustainability under Future Landuse and Population in Deli Serdang Regency, Indonesia by Siagian, Deddy Romulo, Shrestha, Rajendra P, Marpaung, Imelda, Napitupulu, Delima, Haloho, Lermansius, Simatupang, Sortha, Ramija, Khadijah EL, Girsang, Setia Sari

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Factors Driving Rice Land Change 1989–2018 in the Deli Serdang Regency, Indonesia by Siagian, Deddy Romulo, Shrestha, Rajendra P., Shrestha, Sangam, Kuwornu, John K. M.

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Yield gap variation in rice cultivation in Indonesia by Sulaeman, Yiyi, Aryati, Vivi, Suprihatin, Agus, Santari, Putri Tria, Haryati, Yati, Susilawati, Susilawati, Siagian, Deddy Romulo, Karolinoerita, Vicca, Cahyaningrum, Hermawati, Pramono, Joko, Wulanningtyas, Heppy Suci, Fauziah, Lilia, Raharjo, Budi, Syafruddin, Syafruddin, Cahyana, Destika, Waluyo, Waluyo, Susanto, Bambang, Purba, Resmayeti, Dewi, Dina Omayani, Yahumri, Yahumri, Miswarti, Miswarti, Afrizon, Afrizon, Sondakh, Joula Olvy Maya, Amin, Mirawanty, Tandi, Olvie Grietjie, Maftuáh, Eni, Irawati, Ana Feronika Cindra, Nurhayati, Nurhayati, Suriadi, Ahmad, Basuki, Tony, Hidayanto, Muhamad, Munawwarah, Tarbiyatul, Fiana, Yossita, Bakar, Basri Abu, Azis, Abdul, Yasin, Muhammad

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Landuse Conversion Impact Assessment on Landscape Provisioning Service for Rice Sufficiency in Langkat Regency, Indonesia by Siagian, Deddy Romulo, Marbun, Timbul, Hermanto, Catur, Alcantara, Antonio Javina

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