R. Simanungkalit

Most-cited papers

1. Proline and abscisic acid content in droughted corn plant inoculated with Azospirillum sp. and arbuscular mycorrhizae fungi.

   N. Kandowangko, G. Suryatmana, N. Nurlaeny, R. Simanungkalit

   200946 citations Open access

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2. CHARACTERIZATION AND QUALITY ASSESSMENT OF INDONESIAN COMMERCIAL BIOFERTILIZERS

   E. Husen, I. Irawan, Rasti Saraswati, R. Simanungkalit

   200735 citations Open access

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3. Inoculation of soybean with selected strains of Bradyrhizobium japonicum can increase yield on acid soils in Indonesia

   R. Simanungkalit, R. Roughley, R. D. Hastuti, Arief Indrasumunar +1 more

   19969 citations

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4. Population dynamics of soybean root-nodule bacteria in latosol soil used for upland and lowland rice/soybean cropping systems in West Java, Indonesia

   R. Simanungkalit, Arief Indrasumunar, E. Pratiwi, R. D. Hastuti +1 more

   19959 citations

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5. Growth and survival of root-nodule bacteria in legume inoculants stored at high temperatures

   R. Roughley, R. Simanungkalit, L. G. Gemell, E. Hartley +1 more

   19959 citations

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6. ARBUSCULAR MYCORRHIZAL FUNGI FROM THE RfflZOSPHERES OF SOYBEAN CROPS IN LAMPUNG AND WEST JAVA

   K. Kramadibrata, E. I. Riyanti, R. Simanungkalit

   19959 citations Open access

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7. Soybean response on nodulation to starter nitrogen and inoculation with Bradyrhizobium japonicum

   R. D. Hastuti, Arief Indrasumunar, E. Pratiwi, R. Roughley +1 more

   19956 citations

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8. The effect of carrier material and moisture potential on the quality of legume inoculants

   R. Simanungkalit, R. Roughley, Arief Indrasumunar

   19993 citations

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9. Performance Analysis of the Parit Baru Bengkayang Coal Fired Power Plant Project (2 X 50 Mw) in Terms of Cost and Schedule Using the Earned Value Method

   R. Simanungkalit, T. Adi

   2026Syntax literate : jurnal ilmiah Indonesia0 citations Open access

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10. Development of 3D Animation-Based Learning Media With a Scientific on the Sub-theme of Colonial National Events in Grade V of SD Negeri 085115 Sibolga

    R. Simanungkalit, Samsidar Tanjung, Wildansyah Lubis

    2022Proceedings of the 7th Annual International Seminar on Transformative Education and Educational Leadership, AISTEEL 2022, 20 September 2022, Medan, North Sumatera Province, Indonesia0 citations Open access

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11. Effect of ratio of oyster mushroom with straw mushroom and the type of filling flour on the quality of natural seasoning

    R. Simanungkalit, T. Karo-karo, I. Suhaidi

    20210 citations Open access

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12. Directions and Trends of Mathematical Education Research in Indonesia

    R. Simanungkalit, K. Kartono, S. Waluya, R. Rochmad +1 more

    2021Proceedings of The 6th Asia-Pacific Education And Science Conference, AECon 2020, 19-20 December 2020, Purwokerto, Indonesia0 citations Open access

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13. Kepadatan Populasi dan Sebaran Cacing Tanah di Lahan Sawah Sistem Pertanian Organik, Semi Organik dan Konvensinal

    E. Anwar, R. Simanungkalit, E. Santoso, S. Sukristiyonubowo

    2019Biota0 citations Open access

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14. Effectiveness of 10 species of Arbuscular Mycorrhizal (AM) fungi isolated from West Java and Lampung on maize and soybean (Indonesia)

    R. Simanungkalit

    19970 citations

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