Effect of EM and different soil organic fertilizers on micronutrients (Zn, Fe, Cu, and Mn) of spinach
T0 = Control, T1 = FYM, T2 = Pressmud, T3 = Compost, T4 = Poultry manure and T5 = NPK, W. EM = without effective microorganisms, EM = with effective microorganisms (Organic manures socked with Bio-Aab)