NITRIFICATION INTENSITY IN A LOW MOOR PEAT SOIL AND ITS INHIBITION

The low moor peaty soil has been composted during 12 weeks in a labora tory experiment with various forms of nitrogen fertilizers: CO(NH2)(2) , (NH4)(2)SO4, NH4NO3, CO(NH2)(2) + (NH4)(2)SO4 in order to determine the level of N-NH4 and N-NO3 accumulation in soils. The soil compostin g with temperature 28 degrees C and moisture making up 70 percent of t he total capacity, without fertilizer (control) resulted in sixfold in crement, with fertilizers 20-fold, of mineral nitrogen in soil, with n itrates prevailing. The rates of nitrogen transformation depended on t he initial type of fertilizer only in the first 2-4 weeks. The applica tion of nitrification inhibitors: 1-carbamois, -3(5) methylpyrasol (CM P) reduced the nitrification intensity by 2-3 times and maintained and mineral nitrogen as ammonia during 10 weeks.