29 1 10 Sipayung, Juanda Primary Author mixed material Yogyakarta Fakultas Pertanian Universitas Gadjah Mada 2023 WhatsApp_Image_2023-07-26_at_15.20.16.jpg.jpg Yenni Yurna Primary Author Supriyanto, Edi Primary Author Siregar, Hasran Hasil Primary Author Sipayung, Tungkat Primary Author Rahmadi, Yuli Hirawan Primary Author mixed material Medan Pusat Penelitian Kelapa Sawit (PPKS) 2017 photo_2023-07-18_08-48-21.jpg.jpg Kabul Pamin Additional Author Pusat Penelitian Kelapa Sawit (PPKS) Additional Author Christa U. Ginting Additional Author Eka Nuryanto Additional Author Dwi Asmono Additional Author A. Sipayung Additional Author Chairul Muluk Additional Author Angga Jatmika Additional Author L. A. Napitupulu, Chairul Muluk Additional Author Sudharto Parwirosukarto Additional Author Renni Yuliasari Additional Author L. A. Napitupulu Additional Author Asmini Additional Author Djoko Santoso Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 1998 cover_warta_vol6no1.jpg Kabul Pamin Additional Author Z. Poeloengan Additional Author Pusat Penelitian Kelapa Sawit (PPKS) Additional Author Purboyo Guritno Additional Author Christa U. Ginting Additional Author Eka Nuryanto Additional Author TEGUH WAHYONO Additional Author A. Sipayung Additional Author Amir Purba Additional Author Angga Jatmika Additional Author Donald Siahaan, Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 1997 cover_warta_vol5no1.jpg Ch.Hutyauruk,Sudharto Ps G.Simangunsong dan A.Sipayung Primary Author mixed material Marihat Ulu, Pematang Siantar PTP VI-VII & Puslit Marihat 1985 PT.PERKEBUNAN_VI-VII.JPG.JPG Kabul Pamin Additional Author Z. Poeloengan Additional Author Adlin U. Lubis Additional Author A. Purba Additional Author PUSAT PENELITIAN KELAPA SAWIT Additional Author A. Sipayung Additional Author P. Purba Additional Author Rolettha Y. Purba Additional Author P. Girsang Additional Author E. Manalu Additional Author Arief Priyambodo Additional Author Nugroho Kusnohadi Additional Author Rohayati Suprihartini Additional Author mixed material 08532141 Medan Pusat Penelitian Kelapa Sawit (PPKS) 1995 Cover_Warta_PPKS_Vol_3_No_3.jpg Sipayung, Jasemen Additional Author mixed material Medan USU 1979 Cvr_Pengaruh_natrium_benzoat%2C...JPG Sipayung, Maruba Additional Author mixed material Medan USU 1979 Cvr_Pengaruh_konsentrasi_....JPG Adlin U. Lubis Additional Author A. Sipayung Additional Author Fidber Chan Additional Author Suwandi Additional Author A.D. Koedadiri Additional Author Harjono Simangun Additional Author H.S. Situmorang Additional Author mixed material 02161427 Pematang Siantar Pusat Penelitian Marihat 1987 COVER_VOL.7_NO.2_AGUSTUS_1987.jpg SIPAYUNG, A. dan J. Brahmana Additional Author mixed material Medan PPKS 1998