Articles tagged with Soils
A multinational team of experts is working together to address dietary deficiencies in essential nutrients. The GeoNutrition programme aims to map cropland, test the efficacy of micronutrient-enriched fertilisers, and assess public health policies.
A new study challenges the long-held assumption that soil animals contribute to the self-reinforcing effect of climate change by releasing more CO2. The research found that warming temperatures and drought actually lead to a decrease in feeding activity, contrary to expectations.
A study by Ca' Foscari University and CNR found that autumn leaves in Italian woods can contaminate soil with high levels of hydrocarbons, up to four times the legal limit. The researchers identified natural sources of these hydrocarbons, including plant origin, but emphasized that even low concentrations may pose a toxicity risk.
According to a new study, global soil loss has increased by 35.9 billion tonnes between 2001 and 2012, with moderate to high erosion impacting about 9.3% of Earth's land surface. Conservation agriculture can save over a billion tonnes of soil per year if implemented correctly.
Dr. Anand Puppala's patented sensor system uses an integrated moisture sensor and time domain reflectometry probe to detect soil heave in high sulfate soils, allowing for early detection and potential cost savings.
Researchers sequenced the genomes of 24 South African individuals from different ethnolinguistic origins, revealing high levels of genetic diversity. The study found measurable genetic differences between Nguni and Sotho-Tswana speakers, as well as varying proportions of admixture in Coloured individuals.
Scientists at Lund University have developed new systems to study microorganisms in the ground using microchips, revealing complex ecosystems and interactions between microbes and their environment. The technology allows for real-time analysis of microbial processes, enabling researchers to better understand soil structures and functions.
Researchers have found microorganisms in Atacama Desert soils that can potentially be used to create new treatments for HIV and combat antibiotic resistance. The discovery highlights the vast untapped resource of 'dark matter' microbes in extreme environments.
Research by Stellenbosch University found that fynbos seeds can still be viable in soils where pines have grown for up to 30 years, enabling restoration. Clearing pine plantations within 40-50 years saves time and effort in rehabilitating sites.
A team of scientists analyzed data on over 1900 soils from 21 countries, discovering constant bacterial groups across different environments. These bacteria hold clues to making some soils more fertile. Informative families of bacteria indicate real differences among types of soil.
Researchers at Ohio State University found a new methane-producing microbe that survives in oxygen-rich environments, contrary to previous assumptions. The discovery suggests the amount of methane released into the atmosphere may be more than initially thought.
Researchers developed and grew modified Cavendish bananas resistant to Fusarium wilt tropical race 4 (TR4), a devastating soil-borne fungus. One line remained TR4-free for three years, while three others showed strong resistance.
Researchers at Washington State University predict a 7-11% increase in landslide-prone areas on logged land by 2045. The study models clear-cut lands on the Olympic Peninsula and considers factors like soil moisture, land cover, and topography.
A team from the Technical University of Munich found that complex agricultural techniques require professional training, but many Ghanaian pineapple farmers lack access to effective training. The researchers suggest increasing focus on intensive and sustainable training methods to improve yields and income for Ghana's small-scale farmers.
Research by Samuel Haruna found that cover crops and perennial biofuel crops can relieve soil compaction, reducing the impact of fluctuating temperatures. These crops slow down temperature changes and retain moisture, allowing soils to better regulate temperature fluctuations.
Researchers have developed a new technique, diffuse reflectance spectroscopy (DRS), to accurately measure soil carbon levels in coastal wetlands like mangrove forests. This method has higher accuracy and is non-toxic, fast, and inexpensive, making it suitable for large-scale monitoring.
A RUDN University researcher found that plant root secretions stimulate microbial activity, leading to faster decomposition of organic matter and increased nutrient availability for plants. This has significant implications for long-term carbon accumulation and soil fertility in paddy soils.
A recent study by Lancaster University found that logging in tropical forests can have negative impacts on biodiversity, even when done sustainably. The research looked at the impact of logging on forest dung beetles and found that low levels of logging led to a decline in species diversity and rates of soil removal.
Scientists at the University of Georgia developed an efficient living mulch system that benefits both corn production and soil health. By removing portions of clover after each harvest, farmers can reap cost savings from reduced herbicide and nitrogen fertilizer usage.
A combination of biosolids, zinc, and limestone effectively lowers cadmium levels in spinach to non-toxic levels. This innovative approach aims to protect local producers and consumers by growing safe and profitable crops.
A study has identified areas where nitrogen is removed from agricultural streams, revealing that buffer zones with fine soils and organic matter are effective at reducing nitrate levels. These findings suggest that conserving existing buffer zones and reconnecting streams to them can improve water quality.
Researchers found that tree species with drought tolerance traits and soil amendments like rice hulls and hydrogel improved seedling survival. The study provides a general approach to screen native tree species for restoration, offering hope for restoring tropical dry forests.
A team of researchers at Kazan Federal University is exploring the mechanism of how microorganisms form and develop in response to petroleum contamination. They aim to understand whether hydrocarbon-oxidizing community structure depends on soil properties, and how new technologies for soil decontamination may arise from this research.
A grant-funded project has mapped soil erosion intensity across 2.5 million square kilometers of agricultural land in European Russia. Researchers found that ravine erosion is receding, likely due to reduced thawed flow and increased absorption by soil.
Researchers created a new generation of fertilizers using bio-decomposable materials that break down into innocuous products. The smart fertilizers provide a gradual release of active nitrogen compounds, reducing leaching and increasing plant biomass.
A recent experiment by the Smithsonian Tropical Research Institute found that native tree species outperformed teak in infertile tropical soils. The study showed that Amarillo (Terminalia amazonia) trees grew exceptionally well, accumulating biomass faster than teak and having excellent timber value.
A new method uses high-powered lasers to directly break down pollutants in contaminated soil, showing promise as a cheaper and more efficient decontamination technique. The process heats up the pollutant locally, fragmenting it into smaller, safer molecules.
Researchers propose a new approach to understanding soil organic matter's response to climate change and atmospheric chemistry. Soil microbes contribute significantly to stable carbon pools through catabolic and anabolic activities, which could lead to improved soil stabilization and renewal strategies.
Nematodes, tiny worm-like organisms, have shown the ability to survive in dry conditions for up to three years, highlighting the need for improved detection methods. The study found that nematodes can infect plant hosts even after extended periods, emphasizing the importance of biosecurity measures.
Research published in BMJ Open found that improvised explosive devices (IEDs) cause more severe injuries than landmines, particularly among children. IED victims are more likely to suffer multiple amputations, genital/gluteal injuries, and pelvic fractures.
University of Delaware researchers have developed new methods to evaluate the risk of subsurface phosphorus losses in US croplands, particularly in flat and artificially drained areas. The study uses soil data to improve existing phosphorus index models and provides a more accurate assessment of subsurface phosphorus risks.
Researchers at Lomonosov Moscow State University have designed a simple technique to quantify soil color using a low-cost digital device, such as an office scanner. This method reduces errors in soil mapping and organic carbon estimation, increasing accuracy.
Researchers found that the bacteria communities in the National Mall's soil did not change significantly before and after the renovation. The study highlights the importance of understanding how changes in the soil microbiome can impact plant productivity and health.
Researchers found that high levels of silicon concentrations decrease insect growth and root consumption by up to 71%. Silicon helps plants build phytoliths, making them less digestible to insects, and triggering an immune system response. This natural defense mechanism could provide a sustainable solution for crop protection.
A University of Texas at Arlington civil engineer will model large-diameter water transmission pipes' behavior in different types of soils to establish modeling standards. The research aims to improve the reliability and economics of large diameter pipelines, ensuring a long-lasting and sustainable way of building drinking water infras...
A recent study from Guam found that non-native Acacia trees alter the soil chemistry and root-zone nutrient budgets, causing collateral ecosystem deviations. The results contribute to ongoing global discussions about afforestation for revegetating tropical degraded habitats.
Researchers found high sodium and selenium levels in soil and airborne particulate matter from the Salton Sea, posing negative ecological and health risks. The study highlights the need for monitoring and remediation efforts to mitigate dust emissions from the shrinking lake.
Researchers developed a portable x-ray fluorescence spectrometry (PXRF) device to measure calcium levels in soils. The device provides accurate data on 20 elements in 60 seconds, improving field assessments for soil scientists.
Satellite data can optimize fertilizer use, protect groundwater, and monitor agricultural areas more efficiently. The DEMMIN soil measurement and validation site is a key player in this initiative.
Researchers have successfully developed a new method to analyze soil microbial communities and their role in the development of Sudden Death Syndrome (SDS) disease in soybean. By profiling microbes, scientists found significant differences between healthy and diseased areas, suggesting that biological factors play a key role in determi...
Researchers investigated hydro-edaphic conditions in two savanna areas, sampling 20 permanent plots and classifying 128 plant species into 34 families. The study highlights the importance of conservation in this ecosystem, which has been rapidly modified by agribusiness.
Scientists have found evidence that the soil microbiome in restored Illinois prairies is recolonizing and recovering, closely resembling those in untouched natural prairies. This discovery suggests that restoration efforts are working at a foundational level, contributing to the health of people and the planet.
The study reveals that ancient Rapa Nui people consumed a balanced diet of seafood and terrestrial resources, with evidence suggesting deliberate management of agricultural crops. This challenges the ecocide hypothesis, which attributes societal collapse to environmental destruction.
A new web application provides historical climate data to farmers, allowing them to compare current year's conditions with past ten years. The app covers the Texas region and offers information on soil temperature, growing degree days, and precipitation.
A team of researchers from Binghamton University analyzed human and faunal remains to find that around half the protein in diets came from marine sources, contradicting previous estimates. The findings suggest the Rapa Nui population had extensive knowledge to overcome poor soil fertility and create a sustainable food supply.
Researchers found genetically diverse strains of C. difficile in soil samples from children's and dogs' sandboxes in Madrid. The presence of certain strains with increased toxin production poses a significant threat to human and animal health.
A new global erosivity map shows significant variations in rainfall erosivity across different climatic regions, highlighting the need for soil degradation mitigation and restoration strategies. The map provides critical data for assessing soil erosion by water, flood risk, and natural hazard prevention.
Researchers developed a long-term field experiment to monitor post-compaction evolution of soil structure, revealing projected recovery rates of years to decades. Initial results indicate different recovery rates for various properties and decreasing recovery rates with soil depth.
A doctoral student is studying how soil microbes drive plant invasion in the Galapagos Islands, a biodiversity hotspot. The researcher aims to understand the role of mycorrhizal fungi and plant pathogens in shaping plant community structure and diversity.
Biomedical engineers use biological nanoparticles, a plant virus, to deliver pesticide to root level of crops, reducing leaching and runoff, increasing efficacy and safety. The technology has potential for widespread use in agriculture to control parasitic nematodes, which cause significant crop failures worldwide.
Scientists using LRO data identified bright areas near south pole craters that are cold enough for frost to be present. The analysis combined surface temperatures with light reflection information.
Researchers found that biochar application successfully reduced soil acidity and made heavy metals less bioavailable, converting them into less toxic forms. This locally sourced biochar can be used to prevent metal accumulation in soils near abandoned mines, potentially reviving degraded ecosystems.
Soil column thickness significantly influences the transition from hillslopes to channels. Climate plays a crucial role in triggering arroyos exclusively found in south-flowing catchments. These findings highlight the importance of soil development in shaping erosion instabilities.
Conservation assessments for endemic earthworm species in KwaZulu-Natal Province are hindered by lack of common names. Assigning English names facilitates inclusion in environmental impact assessments, highlighting the importance of biodiversity preservation.
Research found that combining crop rotations with soil amendments like poultry litter can alleviate issues associated with continuous cropping. Incorporating corn once within a 4-year cycle resulted in 8% greater yields than continuous soybean.
Researchers found that rotational grazing with a fenced riparian buffer or converting pastures to hayfields reduced soil erosion and runoff. These practices lowered sediment concentrations, volumes, and loads in watersheds compared to continuous grazing.
Researchers at the University of Tennessee, Knoxville, discovered that tiny soil organisms create 'soil highways' for young trees, influencing their migration patterns. The study suggests that these invisible biotic communities could be used to encourage tree migration and preserve heat-sensitive species.
A team of engineers at the University of California San Diego discovered a simple, no-bake method to make bricks from Martian soil by applying pressure. The resulting bricks are stronger than steel-reinforced concrete and may be compatible with additive manufacturing.
Seeds from plants like Pelargonium self-burrow into soil using a helically coiled awn that responds to humidity. The team developed mathematical models to understand the mechanism, which has direct applications to current and next-generation robotics.
A new phosphorus index aims to reduce agricultural runoff pollution by focusing on field characteristics and best management practices. The updated approach addresses limitations of previous indices, providing a more practical tool for farmers and policymakers.