Nitrogen Uptake Efficiency and Total Soil Nitrogen Accumulation in Long-Term Beef Manure and Inorganic Fertilizer Application
Loading...
Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
International Journal of Agronomy
Abstract
Livestock manure is a common soil amendment for crop-livestock production systems. However, the efficiency of crop nitrogen
(N) uptake from the manure-amended soil may not equate with that from inorganic N sources. +e objective of this paper was to
determine the efficiency of N uptake, grain yield, and total soil nitrogen (TSN) accumulation in beef manure-amended soil
compared to the inorganic N fertilizer-amended soil. Data (1990–2015) from a long-term continuous winter wheat (Triticum
aestivum L.) fertility experiment at Stillwater in Oklahoma, USA, were used in this report. +ree of the six “Magruder Plot”
treatments used in this study were manure, NPK plus lime (NPKL), and a check (no nutrients applied). Pre-plant N, P, and K were
applied annually at 67, 14.6, and 27.8 kg·ha−1, respectively, while beef manure was applied every 4 years at 269 kgN·ha−1. +e
results indicated that grain N uptake in the manure treatment (48.1 kg·ha−1) was significantly (p < 0.05) lower than that in the
NPKL treatment (60.2 kg·ha−1). +is represents 20.1% efficiency of inorganic N uptake than the manure N uptake. +e average
grain yield (1990–2015) from the manure and NPKL treatments was 2265.7 and 2510.5 kg·ha−1, respectively, and was not
significantly different. +ere was a trend of TSN increase over the study period for both manure and NPKL treatments. +e
average TSN from manure and NPKL treatments was 0.92 and 0.91 g·kg−1 soil, respectively, and was not significantly different.
While no significant difference between manure and NPKL grain yield was observed, there was a significantly lower uptake
efficiency of manure Ncompared to inorganic N. Furthermore, the low uptake efficiency of the manure Ncould suggest a potential
for environmental pollution. Appropriate timing and application rate of manure N sources could optimize crop use efficiency and
limit potential threat to the environment.
Description
Keywords
Nitrogen, Soil Nitrogen Accumulation, Beef Manure, Inorganic Fertilizer Application
Citation
Omara, P., Aula, L., & Raun, W. R. (2019). Nitrogen uptake efficiency and total soil nitrogen accumulation in long-term beef manure and inorganic fertilizer application. International Journal of Agronomy, 2019. https://doi.org/10.1155/2019/9594369