12 results for group: basalt

Leveraging ecosystems responses to enhanced rock weathering in mitigation scenarios

Yann Gaucher, Katsumasa Tanaka, Daniel J. A. Johansson, Daniel S. Goll, Philippe Ciais ABSTRACT: Carbon dioxide removal (CDR) is deemed necessary to attain the Paris Agreement’s climate objectives. While bioenergy with carbon capture and storage (BECCS) has generated substantial attention, sustainability concerns have led to increased examination of alternative strategies, including enhanced rock weathering (EW). We analyse the role of EW under cost-effective mitigation pathways, by including the CDR potential of basalt applications from silicate weathering (geochemical CDR) and enhanced ecosystem growth and carbon storage in response to phospho...

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 ...

Increased soil CO2 emissions after basalt amendment were partly offset by biochar addition in an urban field experiment

Jennifer Newell,Rory Doherty, Gary Lyons ABSTRACT: Enhanced weathering (EW) and biochar amendment are proposed carbon dioxide removal (CDR) techniques with potential co-benefits for soil health and plant productivity. However, knowledge gaps remain regarding their impacts on soil carbon dynamics and heavy metal mobility. This study investigates the effects of basalt and biochar amendments on soil CO2 efflux (SCE), soil base cation dynamics, biomass yield and heavy metal uptake in clover (Trifolium pratense) and mustard (Brassica juncea) field plots. Despite potential CO2 uptake through weathering, we found that basalt increased SCE in both crops, ...

Microscopic investigation of incipient basalt breakdown in soils: implications for selecting products for enhanced rock weathering

Tarrah M. Burke, Balz S. Kamber, David Rowlings ABSTRACT: Digital optical and scanning electron microscopy (SEM) was used to study advance of incipient weathering of basaltic rock particles for two enhanced rock weathering (ERW) sites in Eastern Australia and three natural basalt sites (New Zealand and Eastern Australia). At the ERW sites, weathering of amended rock particles (up to 8 mm in diameter) induced a significant increase (1–1.5 pH unit) in shallow soil pH. After 14 months of incubation at the more recent site, 6–8 mm basalt particles showed dissolution of glass and olivine while pyroxene and plagioclase remained largely fresh. No ...

Soil Rejuvenation with Crushed Basalt in Mauritius: Part 2, The fertility of basalt and its nutritional effects.

O. D’Hotman de Villiers No abstract   https://www.remineralize.org/wp-content/uploads/2025/04/1962-DHotman-Soil_Rejuvenation_PART_2_Fertility_of_Basalt-International_Sugar_Journal.pdf

SOIL REJUVENATION WITH CRUSHED BASALT IN MAURITIUS: Part 1, Consistent results of world-wide interest.

O. D’Hotman de Villiers No abstract   https://www.remineralize.org/wp-content/uploads/2025/04/1961-DHotman-Soil_Rejuvenation_PART_1_Consistent_results-International_Sugar_Journal.pdf

On the rejuvenation of tropical Iaterttes by the incorporation of basalt dust

O. D'HOTMAN DE VILLIERS ABSTRACT: 1. The work of N. Craig and P. Halais of the. Reoherches Station as well as our own research on the soils and climates of the island, having amply shown that our soils of the wet regions are in an extreme state of climatic poor, we have the idea of regenerating them by incorporating powdered basalt. 2. This idea that has worried us for several years and which seems to us to be the logical focus of the genetic study of tropical soils, will bring, we are convinced, a happy revolution in soil science under climates where atmospheric agents are the cause of a deep decomposition by hydrolysis and a rapid exhaustion ...

Further results of studies on the rejuvenation of exhausted soils in humid districts by incorporating basalt dust.

O. D’Hotman de Villiers ABSTRACT: Results are republished of the 1938-41 experiments conducted in Mauritius with powdered basalt and heavy NPK fertilizer applications on sugar-cane crops grown in exhausted lateritic soil. With these are compared the results of the 2nd series of experiments (1944-47) on the same plots, in which, after a bare fallow of 23 months, moderate N and minimum P and K applications were combined with 10 metric tons/arpent of powdered basalt. The 1937 basalt dressings had been 10, 30 and 90 metric tons. Results show a striking residual benefit, especially from the highest basalt application, affecting both cane and sugar ...

Fertilizing Value of Crushed Basalt

S. M. Feillafe 23rd Annual Report of the Sugarcane Research Station No abstract   https://www.remineralize.org/wp-content/uploads/2025/04/1952-Fertilizing_value_of_crushed_basalt-Revue_Agricole_vol_31.pdf

A REVIEW OF ORGANIC AND INORGANIC AMENDMENTS USED IN CANE CULTIVATION IN MAURITIUS: Part C

D. H. Parish, S. M. Feillafe No Abstract https://www.remineralize.org/wp-content/uploads/2025/04/1958-Parish_and_FeillafC-C.-Basalt-Dust-MSIRI_Annual_Report.pdf