Isolasi Dan Karakterisasi Bakteri Xanthomonas Sp. Penyebab Penyakit Hawar Dau…

ABSTRACT Shallot (Allium ascalonicum L.) is a horticultural plant that contains carbohydrates, fats, vitamins and minerals. The productivity of shallots are low in Riau Province, which is caused by Xanthomonas sp. This bacterium is the pathogen of the important disease that attack at various growth stages in shallot plants. The Symptoms is yellowish white spots, chlorosis to shoot death. T…