Nitrogen Migration from Deep-Row Biosolids Incorporation on a Hybrid Poplar Tree Farm

Abstract

Deep row incorporation of biosolids at rates of 383-658 Mg/ha(171 to 294 dry tons per acre) using hybrid poplar involves the placement of biosolids into trenches that are immediately covered with overburden, eliminating odor problems and maintaining the biosolids in a fairly stable, anaerobic environment. The site is then planted with hybrid poplar trees, the roots of which provide a natural recycling system that utilizes the nutrients over a six-year period in most cases. at 15 and 60 cm may have stabilized or decreased slightly to 1900 and 400 mg/L, respectively. While ammonium levels at 30 and 60 cm may have leveled off, additional suction lysimeters were installed during the summer of 2007 at 120 cm below the biosolids trench in all plots to better understand ammonium movement in the profile.

Population variability and comparative analysis of macroelement concentrations in pedunculate oak (Quercus robur L.) Leaves and surrounding soils

“…Nitrogen mineralization is reduced, resulting in ammonification. Some forms of nitrogen, particularly organic nitrogen and ammonium, can also be adsorbed on active sites of the soil, limiting movement through the soil profile (Felton et al, 2008). As the soil texture is heavy, the adsorption capacity is high, and NH 4 + ions are, for the most part, adsorbed to the adsorption complex (Savić and Jekić, 1975).…”