238 results for group: agriculture-1
Divergent responses of carbon and nitrogen functional genes composition to enhanced rock weathering
Qiong Chen, Daniel S. Goll, Mardin Abdalqadir, Xinjian He, Guochen Li, Boyuan Bi, Tongtong Xu, Chenlu Li, Yanlong Chen, Xiulian Ma, Zhenxin Li, Yunting Fang, Zhanqing Hao & Zuoqiang Yuan
ABSTRACT:
Enhanced rock weathering (ERW) is a scalable strategy for atmospheric carbon dioxide removal. The microbiome function critically regulates the below-ground cycle of carbon and nitrogen in terrestrial ecosystems. However, microbial functioning related to carbon and nitrogen under ERW remains elusive. Here we investigated how wollastonite addition affects key microbial carbon and nitrogen-cycles genes investigated using metagenomic, in a tropic rubber ...
Limited carbon sequestration potential from global ecosystem restoration
Csaba Tölgyesi, Nándor Csikós, Vicky M. Temperton, Elise Buisson, Fernando A. O. Silveira, Caroline E. R. Lehmann, Péter Török, Zoltán Bátori, Ákos Bede-Fazekas
ABSTRACT:
Ecosystem restoration is increasingly recognized as a means of climate change mitigation. Recent global-scale studies have suggested that ecosystem restoration could offset a substantial fraction of human carbon emissions since the Industrial Revolution. However, global carbon sequestration potential remains uncertain due to the tree-centric view of some models and difficulties in modelling restoration across different ecosystem types. Here we applied a model-based ...
Impact of Basalt Rock Powder on Ryegrass Growth and Nutrition on Sandy and Loamy Acid Soils
Charles Desmalles, Lionel Jordan-Meille, Javier Hernandez, Cathy L. Thomas, Sarah Dunham, Feifei Deng, Steve P. McGrath and Stephan M. Haefele
ABSTRACT:
Enhanced weathering of silicate rocks in agriculture is an option for atmospheric CO2 removal and fertility improvement. The objective of our work is to characterise some of the agricultural consequences of a basaltic powder amendment on soil-crop systems. Two doses of basalt (80 and 160 t ha−1) were applied to two types of slightly acid soils (sandy or silty clayey), derived from long-term trials at Bordeaux (INRAE, France) and Rothamsted Research (England), respectively. For each soil, half of ...
Pyrogenic carbon and Carbonating Minerals for Carbon Capture and Storage (PyMiCCS) Part II: Organic and Inorganic Carbon Dioxide Removal in an Oxisol
Maria-Elena Vorrath, Thorben Amann, Johannes Meyer zu Drewer, Nikolas Hagemann, Cierra Aldrich, Janine Börker, Maria Seedtke, Joscha N. Becker, Mathilde Hagens, Annette Eschenbach, Jens Hartmann
ABSTRACT:
Enhanced rock weathering (ERW) and pyrogenic carbon capture and storage (PyCCS, or "biochar carbon removal") are two promising carbon dioxide removal (CDR) techniques that can contribute to soil restoration. These technologies can be combined by co-application of rock powder and biochar or by co-pyrolysis of rock powder with biomass to produce rock-enhanced (RE) biochar. In a 27-week laboratory experiment, we quantified the carbon (C) sink ...
Preliminary assessment of crushed rock, compost, and biochar amendments on soil physical properties
Sarah A. Costanzo, Iris O. Holzer, Nall I. Moonilall, Amber Davenport, Benjamin Z. Houlton, Mallika A. Nocco
ABSTRACT:
Innovative carbon dioxide removal strategies using soil amendments like crushed silicate rock may alter soil structure and function by inducing changes in soil mineralogy. We hypothesized that crushed silicate rock would improve soil physical properties. This study investigated how stand-alone and combined application of crushed metabasalt and olivine rock (40.3 and 26.9 Mg ha−1), compost (9 Mg ha−1), and biochar (10 Mg ha−1) influenced soil physical health over a 2-year drought period in a Northern California corn (Zea ...
Basalt rock dust as a soil remineralizer in upland rice grown in tropical soils: residual effects on soil fertility, Si availability, and leaf anatomy
Mariana de Carvalho Ribeiro, Aline Redondo Martins, Rodrigo Silva Alves, Luís Gustavo Frediani Lessa, Hamilton Seron Pereira, Fernando Shintate Galindo, Marcelo Carvalho Minhoto Teixeira Filho, Cassio Hamilton Abreu–Junior, Arun Dilipkumar Jani, Gian Franco Capra, Antonio Ganga, Thiago Assis Rodrigues Nogueira
ABSTRACT:
Silicate agrominerals (SA) applied as soil remineralizers have garnered interest due to their capacity to supply plant–available nutrients while decreasing reliance on conventional mineral fertilizers (CMF). This research evaluated the residual effects of basalt rock dust (BRD), examining its role as a soil remineralizer and ...
Enhancement of Biochar Carbon Sequestration Through Mineral Regulation: Effects and Mechanisms
Fan Yang, Pengxiao Gao, Lin Chi, Zhongyu Gao, Yajun Wang, Liu Luo, Bo Liu, Xinyue Liu, Jingke Sima
ABSTRACT:
The conversion of waste biomass into biochar through inert pyrolysis represents a promising strategy for carbon sequestration. However, biochar production is often accompanied by the release of small molecular chemical substances during pyrolysis, and the resulting biochar is susceptible to environmental degradation. To enhance the carbon retention rate of biochar during pyrolysis and its stability in the environment, this study explored the incorporation of various metal soluble salts (CaCl2, Ca(H2PO4)2, MgCl2, FeCl3) and clay minerals ...
Long-term trends of streamwater chemistry in an agricultural watershed: Effects of anthropogenic and climatic factors
Fengchao Sun, Rob A. Rioux, William A. Miller-Brown, Bibek Shrestha, James B. Shanley, Noah J. Planavsky, Peter A. Raymond, James E. Saiers
ABSTRACT:
The chemistry of headwater streams is a key indicator of the health of riparian zones and surrounding terrestrial ecosystems. This chemistry is shaped by biogeochemical processes, including chemical weathering, and anthropogenic activities that interact with one another and are sensitive to climate. Elucidating trends in streamwater chemistry and the drivers that underpin them is essential for informing land-management decisions and anticipating water-quality issues that may affect downstream ...
Supplementing Enhanced Weathering With Organic Amendments Accelerates the Net Climate Benefit of Soil Amendments in Rangeland Soils
Tyler L. Anthony, Andrew R. Jones, Whendee L. Silver
ABSTRACT:
Carbon dioxide (CO2) removal (carbon dioxide removal (CDR)) that combines decreased greenhouse gas emissions with atmospheric CO2 reduction is needed to limit climate change. Enhanced rock weathering (ERW) of ground silicate minerals is an emerging CDR technology with the potential to decrease atmospheric CO2. However, there are few multi-year field studies and considerable uncertainty in field-rates of ERW. We explored combining finely ground metabasaltic rock with other soil CDR technologies (compost and biochar amendments) to stimulate carbon (C) sequestration. The combined ground ...
