The Taste of Arabica Coffee in Several Altitude and Shading Condition von Saurnida Asiana Siahaan, Adriani, Masrul Harahap, Erwin, Hanum, Chairani, Karim, Abubakar, Vincēviča-Gaile, Zane

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Effectiveness Of Soil Conservation To Erosion Control On Several Land Use Types von Satriawan, Halus, Harahap, Erwin Masrul, Rahmawaty, Karim, Abubakar

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Growth of oil palm varieties (Elaeis guineensis Jacq.) on subsoil media treated with several dosages of potassium fertilizer von Putri, Mariana, Akoeb, Erwin Nyak, Harahap, Erwin Masrul, Hanum, Hamidah

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Enhancement of Drought Tolerance in Patchouli (Pogostemon cablin, Benth) by Modifying Micro Climate and Frequency of Fertilization von ., Nasruddin, Harahap, Erwin Masrul, Hanum, Chairani, Siregar, Luthfi Aziz Mahmud

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EFFECTS OF PEAT PLANTING MEDIA AMELIORATION ON VEGETATIVE GROWTH OF OIL PALM SEEDLINGS IN THE MAIN NURSERY von Syahminar Syahminar, Erwin Masrul Harahap, Abdul Rauf, Ali Jamil

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Effect of Amelioran Material on Soil Chemical Properties of Incubated Peat Planting Media in Polybag von Syahminar, Syahminar, Harahap, Erwin Masrul, Rauf, Abdul, Jamil, Ali

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ENHANCING SOIL WATER HOLDING CAPACITY AND CATION EXCHANGE CAPACITY OF SANDY SOIL WITH APPLICATION OF MANURE ON SIMALINGKAR SOIL von Lumbanraja, Parlindungan, Harahap, Erwin Masrul

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Pengaruh Sistem Tanam Jajar Legowo yang Dimodifikasi dan Jumlah Bibit Terhadap Pertumbuhan dan Produksi Padi Sawah (Oryza sativaL.) di Desa Tanjung Rejo Kecamatan Percut Sei Tuan von Richardo, Endow, Harahap, Erwin masrul, Hidayat, Benny

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