203 results for group: agriculture-1
Second crop of corn with micaxisto remineralizer in consortium with organic fertilizer
The objective of the present work was to use the mica shale remineralizer in consortium with organic fertilizer for corn culture implanted in the Brazilian Midwest region. The experiment was carried out in the second harvest of the 2020 agricultural year, at Fazenda Panamá, Municipality of Itumbiara, state of Goiás, in the no-tillage system on soybean ridge, implemented by the Center for Study and Research in Plant Science.
The location presents as coordinates geographical areas, 17 ° 58 'S latitude and 45 ° 22' W longitude and 554 m altitude. The agronomic characteristics "plant biometrics" evaluated were, the population of plants, performed ...
Physiological changes in soybean cultivated with soil remineralizer in the Cerrado under variable water regimes
Lucas Felisberto Pereira, Walter Quadros Ribeiro Junior, Maria Lucrécia Gerosa Ramos, Nicolas Zendonadi dos Santos, Guilherme Filgueiras Soares, Raphael Augusto das Chagas Noqueli Casari, Onno Muller, Cássio Jardim Tavares, Éder de Souza Martins, Uwe Rascher, Cristiane Andréa de Lima Guimarães, André Ferreira Pereira, Liliane Márcia Mertz-Henning, Carlos Antonio Ferreira de Sousa
Abstract
The objective of this work was to evaluate the influence of the soil remineralizer fine-graded mica schist (FMS) on soybean (Glycine max) physiology, yield, and grain quality under different water regimes (WRs) in the Brazilian Cerrado. The experiment ...
Growth and physiological responses of maize (Zea mays L.) to porous silica nanoparticles in soil
R. Suriyaprabha, G. Karunakaran, R. Yuvakkumar, P. Prabu, V. Rajendran & N. Kannan
Abstract
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 ...
Factors influencing the release of plant nutrient elements from silicate rock powders: a geochemical overview
A.D. Harley & R.J. Gilkes
Abstract
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 ...
Silicate rock powder: effect on selected chemical properties of a range of soils from Western Australia and on plant growth as assessed in a glasshouse experiment
P. Hinsinger, M. D. A. Bolland, R. J. Gilkes
Abstract
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
Possibilities of using silicate rock powder: An overview
Claudete GindriRamos, James C.Hower, Erika Blanco, Marcos Leandro Silva Oliveira, Suzi Huff Theodoro
Abstract
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 ...
Nutrients release from powder phonolite mediated by bioweathering actions
Laene de Fátima Tavares, André Mundstock Xavier de Carvalho, Luis Gustavo Brogliato Camargo, Samarina Gabriele de Fátima Pereira, Irene Maria Cardoso
Abstract
Silicate rock powders have been appointed as possible nutrient alternative sources which might enhance the agricultural sector sustainability. However, the application of those materials directly in soil presents as main limitations the low content and solubility of the mineral nutrient sources. In this perspective, the aim of the present study was to evaluate, in a bioweathering perspective, the conjunct application potential of phonolite with organic composts over the nutrients ...
Olivine Weathering in Soil, and Its Effects on Growth and Nutrient Uptake in Ryegrass (Lolium perenne L.): A Pot Experiment
Hein F. M. ten Berge ,Hugo G. van der Meer, Johan W. Steenhuizen, Paul W. Goedhart, Pol Knops, Jan Verhagen
Abstract
Mineral carbonation of basic silicate minerals regulates atmospheric CO2 on geological time scales by locking up carbon. Mining and spreading onto the earth’s surface of fast-weathering silicates, such as olivine, has been proposed to speed up this natural CO2 sequestration (‘enhanced weathering’). While agriculture may offer an existing infrastructure, weathering rate and impacts on soil and plant are largely unknown. Our objectives were to assess weathering of olivine in soil, and its effects on plant growth and nutrient ...
Agricultural acceleration of soil carbonate weathering
John H. Kim, Esteban G. Jobbágy, Daniel D. Richter, Susan E. Trumbore, Robert B. Jackson
Abstract
Soil carbonates (i.e., soil inorganic carbon or SIC) represent more than a quarter of the terrestrial carbon pool and are often considered to be relatively stable, with fluxes significant only on geologic timescales. However, given the importance of climatic water balance on SIC accumulation, we tested the hypothesis that increased soil water storage and transport resulting from cultivation may enhance dissolution of SIC, altering their local stock at decadal timescales. We compared SIC storage to 7.3 m depth in eight sites, each having paired ...
CO2 sequestration by Enhanced Weathering of agricultural soils in Norfolk, UK
Andrews, G., Epihov, D., Pearce, C. R., James, R. H., Beerling, D. J.
Abstract
Enhanced Weathering (EW) of silicate rocks is a carbon dioxide (CO 2 ) removal (CDR) strategy whereby powdered rock is applied to the land and/or ocean in order to mitigate climate warming through accelerated rates of chemical weathering. Agricultural sites are particularly suited for EW as they host infastructure needed to implement EW, and the nutrients released during weathering facilitate a number of food security co-benefits such as increased crop yields [1].
Here we present results from EW field trials conducted in Norfolk, United Kingdom, with two different ...
