Articles tagged with Soils
Researchers at the University of Pennsylvania found a correlation between household income, building age, and proximity to former lead smelters with elevated blood-lead levels in children. The study highlights environmental justice issues that disproportionately affect low-income and minority populations in Philadelphia.
A team of researchers from Nanyang Technological University and National Parks Board in Singapore has discovered that certain tropical plant species can absorb and remove toxic heavy metals and metalloids from contaminated soil. The study identified 12 plant species effective for phytoremediation, including Cow Grass, Brake Fern, and I...
Vertical farming enables crops to be grown in vertically stacked layers, conserving land and allowing for multiple harvests per year. This method can significantly reduce water requirements and chemical crop protection, while increasing yields through optimal growth conditions and technologies.
Scientists have identified a potential new antibiotic candidate from the rare soil microbe Lentzea flaviverrucosa. The discovery was made using genomics-based approaches and shows that this actinomycete produces two different bioactive molecules that are active against various types of cancer cells.
Researchers found that earthworms prefer soils with bioplastic particles and digest them differently than petroleum-derived plastics. The worms can break down bioplastics like polylactic acid into smaller fragments, which are then excreted slowly.
Researchers used machine learning to predict the most important factors underlying heavy metal pollution remediation in biochar-treated soils. Biochar nitrogen content and application rate were found to be the most crucial features in determining HM immobilization, with soil properties also playing a significant role.
Research found that invasive earthworms significantly reduce the number of insects, biomass, and species richness above ground in Canadian forests. The study suggests that changes in soil conditions caused by earthworms may also affect vegetation, but no significant alteration was detected.
Researchers have developed a simple, biodegradable ground cover that keeps soil wet longer and increases crop yields. The wax-coated sand barrier decreased soil moisture loss by up to 50-80% and improved plant growth, including increased fruit and grain production.
Research found that cattle manure biochar addition can offset earthworms' contributions to greenhouse gas emissions in forest soils. The study showed that adding 10% biochar reduced CO2 and N2O emissions, improved soil pH, and increased denitrification rates.
A study by McGill University researchers shows that tailored fertilizer recommendations based on on-site soil tests can significantly improve maize yields. The approach also helps farmers overcome financing constraints, increasing productivity and profits while minimizing environmental impact.
Researchers found that desert microbes produce nitrous oxide (N2O) emissions in arid soils after rain, contradicting the long-held assumption that it comes from fertilized agricultural fields. The study reveals a new source of nitrogen pollution in deserts, driven by fossil fuel combustion and industrial processes.
A team of researchers proposes converting discarded surgical masks into a burnable fuel through pyrolysis, yielding a carbon-rich oil with high heating value. The study suggests this method offers better environmental performance compared to conventional waste management approaches.
Researchers found that common houseplants like Peace lily, Corn plant, and fern arum can remove nitrogen dioxide from the atmosphere, reducing pollution levels. In a poorly ventilated office, five plants could reduce NO2 levels by up to 20%.
A recent study found that farms using regenerative agriculture have healthier crops with higher levels of minerals, vitamins, and phytochemicals. The research suggests that the key lies in the biology of the soil, where microbes and fungi play a crucial role in boosting beneficial compounds.
Researchers found that soil solarization effectively controls Bradysia cellarum infestations without harming Chinese chive crops, while also increasing beneficial microorganisms. The study suggests soil solarization as a promising, pesticide-free method for controlling this soil insect.
Researchers at University of Copenhagen find that pharmaceutical residues in sewage sludge and cattle manure do not harm soil organisms, despite concerns over environmental risks. Organic fertilizers like sludge and manure provide better soil quality than conventional mineral fertilizers.
A new study suggests that wildfires can lead to increased soil carbon stocks in savannahs and grasslands, potentially offsetting short-term emissions. The research found that fires could store up to 90 million tonnes of carbon per year, but the breakdown rate of charcoal in soils remains uncertain.
Researchers discovered a protein called PHR regulates arbuscular mycorrhiza (AM) symbiosis based on phosphate availability. AM promotes phosphate uptake and other nutrient absorption, enhancing plant resistance to stressors.
Researchers found that soil pH and total cadmium are key factors controlling cadmium uptake in cacao beans. Liming soils can increase yield while reducing cadmium content, but access to lime may be limited for smallholder farmers.
Researchers found that microbes in the soils generate methane gas, which is then processed as it moves through dead trees. The findings shed light on the sources of greenhouse gas emissions from ghost forests, a growing concern due to rising sea levels.
A recent study found that cover cropping can reduce the population of Pseudomonas syringae, a common bacterial pathogen affecting agricultural crops. The researchers also discovered an increase in beneficial microbes such as Sphingomonas and Methylobacterium, which have been used as biocontrol agents against pathogens.
Researchers have identified locations of ancient Maya sacred groves containing cacao trees, which played a crucial role in rituals and trade routes. The discovery sheds light on the economic, political, and spiritual significance of cacao in Mesoamerican culture.
This book provides a fundamental understanding of the physical, biological, and chemical processes governing fine sediment transport in open water. It covers various spatial and temporal scales, from micro-scale to system-wide, and discusses interactions between disciplines such as hydrodynamics and soft soil mechanics.
A new analysis predicts climate change will decline suitable regions for coffee arabica, cashews, and avocados in major producing countries. Suitable areas may expand at higher altitudes and latitudes, particularly for cashews and avocados.
A recent study by Duke University researchers identified a critical salinity threshold of 265 parts per million sodium for understory plants in coastal wetlands. Above this level, the marsh floor undergoes significant changes, with rushes and reeds dominating over salt-tolerant plants.
Researchers aim to develop a biopolymer-based material to replace conventional cement in construction projects. The material has the potential to reduce environmental footprint, minimize dust, and improve soldier health. Biopolymers are naturally produced by living organisms and are safe for human consumption.
Researchers found that compost and compost-enriched soils contain high concentrations of Aspergillus fumigatus spores, which can cause serious lung infections. Handling compost exposes individuals to large numbers of aerosolized spores, highlighting the need for behavioral changes and industry action
A new study from UC Berkeley suggests that copper in soil and seawater acts as a catalyst for producing two potent halocarbon compounds that destroy ozone. The compounds, methyl bromide and methyl chloride, are major contributors to stratospheric ozone depletion and have puzzled scientists for over 20 years.
Researchers found that fungal communities play a key role in tree growth, with some species increasing tree growth rates up to a tree-fold. The study suggests that using specific fungal communities can help improve forestry and potentially absorb more carbon from the atmosphere.
Researchers at Skoltech developed an algorithm that aggregates and maps environmental data to predict and visually map the quality of water, soil, or air. The solution uses interpolation to fill gaps in data and produces detailed maps with high resolution.
Researchers identified global factors explaining plant diversity in form and function, influenced by climate and soil properties. Characteristics such as size, structure, and life span were shown to be determined by these factors.
Researchers found that seed microorganisms have more staying power than soil microorganisms when colonizing plants. The study suggests that modifying the seed microbiome could lead to more sustainable agriculture and increased crop yields and quality.
The project will appraise global initiatives and support improved evidence-based intervention design for SIS systems, identifying successful approaches and areas for innovation. It aims to understand how soils information informs national policies and strategic planning.
The Forest Condition Monitor tool uses color-coded visualization to identify areas of high-stress forests across Europe, allowing for targeted conservation efforts and research. Scientists can study these regions to understand eco-physiological processes and warn forest owners of potential risks.
The study found that nitrogen fertilizer accelerated residue decomposition, producing more carbon dioxide and reducing the incorporation of residues into soil organic matter. This long-term problem can cause microbes to attack stable organic matter, leading to a decline in soil health.
A new study found that Brood X cicada emergence holes significantly increased water infiltration rates in undisturbed areas but not in disturbed sites. The holes filled with sediment and debris over time, causing a rapid decrease in infiltration at disturbed locations.
University of Adelaide scientists developed a new simple and inexpensive method to detect low concentrations of agricultural lime in soils. The Mid Infrared spectroscopy technique allows for accurate detection of very small amounts of lime, enabling farmers to manage their soils more effectively.
A new study published in Applications in Plant Sciences highlights the negative effects of clearcutting on mycorrhizal fungi, showing less diversity in formerly deforested areas. High-throughput sequencing reveals over 300 distinct fungal lineages in soil and root samples, shedding light on ecosystem health.
A $19 million research project will investigate the connection between grazing management decisions and soil health, aiming to improve soil resilience and productivity. The project, led by Noble Research Institute, will provide farmers and ranchers with tools to measure outcomes of soil health in grazing land environments.
A new study found that having crop insurance in Indiana discourages the use of cover crops, which promote soil health and productivity. However, the impact is relatively minor, with only a 0.494% reduction in cover crop adoption rates for each percentage point increase in crop insurance participation.
A study published in Proceedings of the Royal Society B reveals that a rare alga, Chlorokybus, contains at least five distinct species previously thought to be a single entity. Genetic analysis confirmed these findings, shedding new light on the biodiversity and evolutionary pathways of this key algal group.
Researchers used a see-through porous medium to analyze polymer solutions' movement, overturning the assumption of uniform laminar flow. The polymers stretched out, creating turbulence and slowing the velocity of the flow.
Duke University scientists developed isotope-based tests to identify lead contamination origins and assess risk in urban soils. The new test can distinguish between legacy and modern sources of lead, helping public health officials track and remediate contaminated areas. Elevated lead levels pose long-term health risks for children.
A new study found that heat and antibiotics alone and in combination degrade soil microbe efficiency, resilience, and ability to trap carbon. This could diminish soils' resilience to future stress and exacerbate climate change effects.
Princeton researchers have solved a 54-year-old mystery about why certain fluids slow down under pressure when flowing through porous materials. The findings could help improve processes in oil recovery, groundwater remediation and more.
Researchers will test inexpensive techniques to increase asymbiotic nitrogen fixation, aiming to reduce reliance on expensive certified organic fertilizers. The project aims to provide evidence for a cheap, effective, and sustainable form of nitrogen for organically managed crops.
A new Penn State study explores how climate change affects rain in the U.S. Corn Belt, finding that air humidity plays a crucial role. The research suggests that high near-surface humidity is most important for convective precipitation or rain, contrary to previous expectations that soil moisture would be the key factor.
Researchers from the University of Oklahoma are leading a global study to understand the impact of increased nutrients on soil microbial biodiversity and ecosystem functions in grasslands worldwide. The project aims to develop new mathematical models to predict how nutrient changes affect soil microbe diversity and functions.
Researchers found that microbes' growth rate decreased over 15 years of warming, and a loss of soil carbon may be responsible for the slowdown. Rare bacterial taxa were among the fastest growers, highlighting the importance of considering different organisms' responses.
The University of Idaho's Deep Soil Ecotron facility will be a game-changer for understanding soil ecosystems, allowing researchers to conduct experiments at unprecedented depths. By studying deep soils, scientists can better understand how organisms respond to global environmental change and improve carbon sequestration.
Researchers discovered that ice needles growing on frozen ground can push up rocks into regular patterns through a combination of experiments and computer modeling. Over time, stones cluster together, leaving bare patches stone-free, as the size of the stones, soil moisture, and ice needle growth interact.
Salt stress alters legume responses to symbiotic rhizobacteria by modulating gene expression. Several genes with well-characterized functions in nodulation are highly induced under salt stress, making the plant hypersensitive to bacterial signals.
The Deep Soil Ecotron will enable scientists to conduct experiments on columns of soil up to three meters deep, improving understanding of how deep soil organisms react to unprecedented conditions and sequester carbon. The facility will also be used to develop sensors to monitor deep soils in the field.
ORNL is increasing its efforts to reduce greenhouse gas emissions from the US agricultural sector through science-based changes in practices. The lab has discovered a single gene that can make crops more drought-tolerant and productive, while also pulling CO2 from the atmosphere.
A lidar mapping study of ancient Teotihuacan shows that the city's engineers reshaped the landscape for construction, rerouted rivers to align with astronomical significance, and identified hundreds of previously unknown architectural features. The study confirms how these modifications continue to influence modern activities in the area.
Scientists have developed a method to produce strigolactones, a group of plant hormones that prevent excessive budding and branching. By combining yeast and bacteria, researchers can synthesize these hormones from microbes, providing a promising alternative to traditional methods.
A new University of Illinois study integrates field data and advanced mathematical modeling to understand how cover crops affect soil water, nitrogen, and oxygen dynamics. The research finds that proper management of cover crops can balance their benefits with cash crop yields, while ignoring the impacts without optimization.
Soil ecologists found that biobased plastics like PBSA degrade efficiently in the soil, even under future climate conditions, but excessive amounts can disrupt microbial communities and agriculture. The degradation process is influenced by fungi and a diverse bacterial community.
A new study reveals evidence of beer drinking 9,000 years ago in southern China, with ancient pots found at a burial site containing residues consistent with beer fermentation. The discovery suggests that ritualized drinking played a significant role in forging social relationships and cooperation among ancient communities.
A study found that commercial composts contain more airborne pathogens than backyard composts, while immature compost samples have high levels of antibiotic resistance genes. The researchers hope to improve their detection method to assess the threat to humans.