Glacially abraded rock flour from Greenland: Potential for macronutrient supply to plants

• DOI: 10.1002/jpln.201800647
• Publication Date: 2019-08-08T10:59:54Z
• Authors: Klara Cecilia Gun...; Lars Stoumann Jensen; Beatriz Gómez-Muñoz; Minik Thorleif Ro...; Andreas de Neergaard
• Keywords: Revegetation; Soil test

Abstract Rock flour (RF) is a fine‐grained material produced naturally by glacial movement and resulting bedrock abrasion. In Greenland fluvial transported RF from the inland ice sheet sediments in riverbeds marine outflows. This fine‐sized (50% < 9.8 µm) has high reactivity may therefore potentially be used to rejuvenate nutrient poor soils provide nutrients plants. The aim of this study was evaluate ability supply P, K, Mg, S A double‐pot system used, which ryegrass ( Lolium perenne L .) could take up both hydroponic solution soil‐compartment with or without amendment; soil mixture pure sand estimate RF‐soil interaction effects. Omission single allowed assessment able supply. Ryegrass biomass harvested four times during 62 days. We found that K continuously plants grown sand, but insufficient fully circumvent deficiency. During days 5.8% 4.3% applied accumulated aboveground plant tissue respectively. Mg supplied no significant effects were observed soil, possibly due background availability. amounts P insignificant. These results indicate potential act as slow release fertilizer.