Soil Net Nitrogen Mineralization and Leaching under Miscanthus × giganteus and Zea mays

CABBI Theme: Sustainability

Keywords: Biomass Analytics, Field Data

Citation

Studt, J., Heaton, E., McDaniel, M.D. June 10, 2021. “Soil Net Nitrogen Mineralization and Leaching under Miscanthus × giganteus and Zea mays.” Iowa State University. DOI: 10.25380/iastate.14695989.v1.

Relationship between annual cumulative net N mineralization and N leached (past 50 cm soil depth) for (a) 0 kg N ha^-1 y^-1 and (b) 224 kg N ha^-1 y^-1 fertilizer rates.

Overview

Research objectives were to compare whether miscanthus (Miscanthus × giganteus Greef et Deu.) would leach less nitrogen (N) than continue maize (Zea mays L.) and how soil net N mineralization (Nmin) may explain observed leaching. The experiment included three factors: 1) cropping system (maize, juvenile miscanthus = 1-2 y old, mature miscanthus = 3-4 y old); 2) N fertilization (0 and 224 kg N ha^-1); and 3) environment (four site-years at two locations in Iowa, USA that differed in climate and soil fertility). During the 2017 and 2018 growing seasons a variety of soil measurements, including inorganic soil N (ammonium + nitrate), in situ N_min, and N leaching were taken to better understand the differences in N cycling dynamics associated with each system.

Data

Soil Net Nitrogen Mineralization and Leaching Data (103KB)

Related Publication

Studt, J.E., McDaniel, M.D., Tejera, M.D., VanLoocke, A., Howe, A., Heaton, E.A. June 26, 2021. “Soil Net Nitrogen Mineralization and Leaching under Miscanthus x giganteus and Zea mays.” GCB Bioenergy. DOI: 10.1111/gcbb.12875.