Research article - Peer-reviewed, 2020
Laboratory studies on dissolution of nitrogen fertilizers by humidity and precipitation
Sigtryggsson, Christian; Hamner, Karin; Kirchmann, HolgerAbstract
Aiming at improving fertilizer management by assessing fertilizer dissolution, we compared the hygroscopicity of calcium ammonium nitrate (CAN), ammonium nitrate (NS 27-4), and nitrate compounds (laboratory grade). Dissolution of N fertilizers was also studied under simulated rain conditions. All compounds were highly hygroscopic, dissolving within 24 h at 90-99% relative humidity and 25 degrees C. Addition of 2 mm rain to fertilizer granules (3-4.5 mm diam.) was sufficient to dissolve 50% of the compounds. Dissolution rates by humidity or rain were not the limiting step for plant availability.Published in
Agricultural & Environmental Letters2020, volume: 5, number: 1, article number: e20016
Publisher: WILEY
Authors' information
Swedish University of Agricultural Sciences, Department of Energy and Technology
Swedish University of Agricultural Sciences, Department of Soil and Environment
Swedish University of Agricultural Sciences, Department of Soil and Environment
UKÄ Subject classification
Agricultural Science
Soil Science
Publication Identifiers
DOI: https://doi.org/10.1002/ael2.20016
URI (permanent link to this page)
https://res.slu.se/id/publ/110656