Markus Anda J. Shamshuddin C.I. Fauziah
Technology intervention is a key success to restore properties and productivities of a highly weathered soil (Oxisols). The main challenge is to find materials with the ability to generate soil negative charge, release various nutrients and suppress toxic elements. The objective of this study was to increase negative charge and nutrient content, and suppress Al and Mn toxicities of an Oxisol using finely ground basalt and rice husk compost (RHC) to promote cocoa growth under field conditions. Factorial field experiment of 4 × 4 used finely ground basalt and rice husk compost and arranged in a ...
Gaojun Li, Jens Hartmann, Louis A.Derry, A.Joshua West, Chen-Feng You, Xiaoyong Long, Tao Zhan, Laifeng Li, Gen Li, Wenhong Qiu, Tao Li, Lianwen Liu, Yang Chen, Junfeng Ji, Liang Zhao, Jun Chen
The homeostatic balance of Earth's long-term carbon cycle and the equable state of Earth's climate are maintained by negative feedbacks between the levels of atmospheric CO2 and the chemical weathering rate of silicate rocks. Though clearly demonstrated by well-controlled laboratory dissolution experiments, the temperature dependence of silicate weathering rates, hypothesized to play a central role in these weathering feedbacks, has been diffic...
R. Suriyaprabha, G. Karunakaran, R. Yuvakkumar, P. Prabu, V. Rajendran & N. Kannan
The present study aims to explore the effect of high surface area (360.85 m2 g−1) silica nanoparticles (SNPs) (20–40 nm) extracted from rice husk on the physiological and anatomical changes during maize growth in sandy loam soil at four concentrations (5–20 kg ha−1) in comparison with bulk silica (15–20 kg ha−1). The plant responses to nano and bulk silica treatments were analyzed in terms of growth characteristics, phyto compounds such as total protein, chlorophyll, and other organic compounds (gas chromatography–mass spectroscopy), and ...
A.D. Harley & R.J. Gilkes
Rock-forming minerals of igneous and metamorphic rocks contain most of the nutrients required by higher plants for growth and development. Ground rock fertilisers may provide a source of nutrients to depleted topsoils where bulk soil solutions are not in equilibrium with fresh primary minerals. Slow dissolution rates of silicate minerals may inhibit the use of rock powders in agriculture unless suitable soils are identified and optimum rock powder properties developed. This review identifies previous research where the agronomic effectiveness of ground rock fertilisers has been evaluated. There are many ...
P. Hinsinger, M. D. A. Bolland, R. J. Gilkes
Soil samples were collected from 20 locations from the south western part of Western Australia and incubated at 25 °C for 60 days without or with finely ground granite powder at a rate of 20 g kg−1 soil, equivalent to about 20 t ha−1. Electrical conductivity and exchangeable Na, Ca and Mg were not significantly affected by granite application for most soils. Conversely, among the 20 soils studied, nine exhibited a significant increase in exchangeable K (atp
Claudete GindriRamos, James C.Hower, Erika Blanco, Marcos Leandro Silva Oliveira, Suzi Huff Theodoro
This study evaluates the on use of crushed rocks (remineralizers) to increase soil fertility levels and which contributed to increase agricultural productivity, recovery of degraded areas, decontamination of water, and carbon sequestration. The use of these geological materials is part of the assumptions of rock technology and, indirectly, facilitates the achievement of sustainable development goals related to soil management, climate change, and the preservation of water resources. Research over the past 50 years on silicate rocks ...
Amy L.Lewis, Binoy Sarkar, Peter Wadea, Simon J.Kemp, Mark E.Hodson, Lyla L.Taylor, Kok Loong Yeong, Kalu Davies, Paul N.Nelson, Michael I.Bird, Ilsa B.Kantola, Michael D.Masters, Evan DeLucia, Jonathan R.Leake, Steven A.Banwart, David J.Beerling
Mafic igneous rocks, such as basalt, are composed of abundant calcium- and magnesium-rich silicate minerals widely proposed to be suitable for scalable carbon dioxide removal (CDR) by enhanced rock weathering (ERW). Here, we report a detailed characterization of the mineralogy, chemistry, particle size and surface area of six mined basalts being used in large-scale ERW field trials. We use 1-D ...
Marek Jakubowski, Ewa Stanisławska-Glubiak, Bernard Gałka
The purpose of this research was to examine whether the addi-tion of waste rock dust to light soil contaminated with nickel will increase the yields of cultivated plants and reduce their excessive nickel content. The research was conducted in concrete microplots of 1 m2 dimension in the complete randomisation system, as a two-factor experiment in four replications. The first factor was the level of soil contamination: (1) Ni0 – soil with natural Ni content; (2) Ni1 – 100; (3) Ni2 – 150 and (4) Ni3 – 270 mg • kg-1 of the soil. The second factor was the level of ...
Adilson Celimar Dalmora, Claudete Gindri Ramos, Marcos Leandro Silva Oliveir, Luis Felipe Silva Oliveir, Ivo André Homrich Schneider, Rubens MullerKautzmann
Global demineralization of agricultural soils due to unsustainable use of highly soluble fertilizers and intensive exploitation is an issue of increasing concern. Methods of remineralization include the application of volcanic rock by-product, such as vesicular andesite on mineral-deficient fields. The present work analyzed the petrography, mineralogy, and chemistry of volcanic rock by-product (vesicular andesite rock), as well as on-field experiment with eucalyptus. The petrogra...
Claudete Gindri Ramos, Diego dos Santos de Medeiros, Leandro Gomez, Luis Felipe Silva Oliveira, Ivo André Homrich Schneider, Rubens Muller Kautzmann
This study was focused on physical, petrographical, mineralogical, and chemical characterization of a volcanic-rock mining by-product (dacite rock), as well as on greenhouse experiment with black oats and maize crops to evaluate the potential use of the by-product as soil re-mineralizer. The by-product sample was obtained from a quarry in the Nova Prata mining district in southern Brazil. The particle size distribution of the by-product and soil was determined by sieving. Dacite rock ...