The Effect of Farm Manure on Plant Nutrient Contents in Organic Leek Production Journal title: ISPEC Journal of Agricultural Sciences Authors: Mahmut TEPECİK, H. Hüsnü KAYIKÇIOĞLU, N. Tuba BARLAS, M. Kadri BOZOKALFA, Tansel KAYGISIZ AŞÇIOĞUL,... Subject(s): Agriculture, Multidisciplinary