3 1 10 PPKS Additional Author DARNOKO Additional Author Luqman Erningpraja Additional Author Heri Santoso Additional Author Condro Utomo Additional Author Heri Adriwan Siregar Additional Author Hasril Hasan Siregar Additional Author Nanang Supena Additional Author Sujadi Additional Author Bagus Giri Yudanto Additional Author Abdul Razak Purba Additional Author Yahya Sudirman Additional Author Elis Kartika Additional Author Herawan Yuli Rahmadi Additional Author Sri Wilarso Additional Author mixed material 0853196X Medan PPKS 2006 cvr_14_N3_2006.JPG Eka Nuryanto Additional Author PUSAT PENELITIAN KELAPA SAWIT Additional Author TEGUH WAHYONO Additional Author Agus Susanto Additional Author Agus Eko Prasetyo Additional Author Tjahjono Herawan Additional Author A. Razak Purba Additional Author Mira Ariyanti Additional Author Edy Sigit Sutarta Additional Author Hasril Hasan Siregar Additional Author Zulfi Prima Sani Nasution Additional Author Ellen Additional Author Hari Priwiratama Additional Author Sri Wening Additional Author PURBA, Abdul Razak Additional Author Kukuh Murtilaksono Additional Author Yahya Sudirman Additional Author Yenni Asbur Additional Author Sudradjat Additional Author Suwarto Additional Author mixed material 0853196X Medan Pusat Penelitian Kelapa Sawit (PPKS) 2015 Cvr_JPKS_V23N_2_Agustus_2015.jpg Daswir Additional Author LALANG BUANA Additional Author Dwi Asmono Additional Author DARNOKO Additional Author A. Razak Purba Additional Author Fatmawati Additional Author A.Sipayung Additional Author SOEMARTONO Additional Author Nasrullah Additional Author Tri Hutomo Additional Author Rachmat Adiwiganda Additional Author Zulkarnain Poeloengan Additional Author Akiyat Additional Author A.D. Koedadiri Additional Author A.U. Lubis Additional Author P.Purba Additional Author R.A.Lubis Additional Author Alex Hartana Additional Author Edi Guhardja Additional Author Sudirman Yahya Additional Author L.A. Napitupulu Additional Author G.Ginting Additional Author J.Brahmana Additional Author Iswandi Anas Additional Author mixed material Medan Pusat Penelitian Kelapa Sawit 1993 IMG_20190201_0001.jpg