Effects of Phosphorus on Nitrification Process in a Fertile Soil Amended with Urea

While the effects of carbon on soil nitrogen (N) cycle have been extensively studied, it is not clearly understood how co-existing macronutrients, such as phosphorus (P), affect N in agroecosystems. In this study, P amendment nitrification a fertile agricultural were investigated under typical N-P rate. laboratory incubation soils amended with urea, monopotassium phosphate and mixture urea at same that received no amendments (control), only, plus amendment, occurred within first five days, an average net rate 5.30, 5.77, 16.66 9.00 mg kg−1d−1, respectively. Interestingly, urea-treated was retarded by addition where N:P ratio seemed to be key factor impeding nitrification. This also supported response ammonia-oxidizing bacteria (AOB), which more sensitive than archaea (AOA). The outcome study showed application fertilizer suppressed process soil, suggesting synergistic aspect nutrient management should further explored retard losses from systems.