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Mineralization of Nitrogen from Biofuel By-products and Animal Manures Amended to a Sandy Soil

Author:
Moore, A.D., Alva, A.K., Collins, H.P., Boydston, R.A.
Source:
Communications in soil science and plant analysis 2010 v.41 no.9-11 pp. 1315
ISSN:
0010-3624
Subject:
poultry manure, dairy manure, composted manure, plant byproducts, anaerobic digestion, distillers grains, mustard meal, nitrogen, soil amendments, sandy soils, ammonium nitrogen, nutrient availability, nitrification, chemical composition, nitrate nitrogen, slow-release fertilizers
Abstract:
Transformations of nitrogen (N) from poultry litter (PL), dairy manure compost (DMC), anaerobically digested fiber (ADF), Perfect Blend 7-2-2 (PB), a compost/litter mixture (C/L), dried distillers grains from ethanol production (DG), and mustard meal from biodiesel production (MM) applied to a Quincy fine sand were investigated in an incubation experiment over 210 days. The cumulative release totals of available N after 210 days were 61, 61, 56, 44, 29, 2, and -2% for the total N in MM, PB, DG, PL, C/L, DMC, and ADF, respectively. With application of MM and DG, ammonium (NH4-N) accumulated initially in the soil with very little nitrification, possibly because of inhibition of nitrification related to chemical compounds in the amendments. Mineralization of organic N to NH4-N and nitrate (NO3-N) was relatively slow from MM- and DG-amended soils, indicating the potential for using biofuel by-products as slow-release N sources for plants.
Agid:
44681
Handle:
10113/44681