Evauasi Kesesuaian Retensi Hara untuk Tanaman Bawang Merah (Allium Ascalonicum) di Kecamatan Baktiraja Kabupaten Humbang Hasundutan Sumatera Utara

摘要

The aim of this research is to evaluate the suitability of nutrient retention for Shallot (Allium ascalonicum) in Baktiraja Sub-district of Humbang Hasundutan District, North Sumatera Province. The method of this search is survey method with Purposive Random Sampling Method with 30 samples and 3 meters, which is pH, CEC, and C-Organic. The result of this research show that land quality nutrient retentiont at Baktiraja Sub-District of Humbang Hasundutan District for shallot (Allium ascalonicum) is moderately suitable (S2). The characteristics for pH and C-Organic are highly suitable (S1), and at the same time is moderately suitable (S2) for CEC.