Articles tagged with Soils
Researchers employed satellite imagery and statistical models to identify the socio-economic causes of soil erosion globally. They found that national borders reveal areas with unnaturally high erosion rates, highlighting the 'country effect' as a major driver of soil loss.
Researchers at Colorado State University reveal that soil organic matter has two distinct components: particulate and mineral-associated organic matter, which differ in their origin, makeup, and persistence. Recognizing this diversity is essential for developing effective strategies to sequester carbon and promote soil health.
Soil nitrogen levels drive plant growth for food production and ecosystem health. The global field study provides a more detailed baseline of worldwide nitrogen levels, improving understanding of natural cycles and the effects of over-fertilization.
Researchers have developed coated seeds that can grow in salty soils by providing a protective coating and fertilizer-generating microbes. These seeds showed improved health and growth compared to untreated seeds in unproductive soil fields.
A bioarcheologist excavated a medieval Uzbek cemetery, discovering evidence of degenerative joint disease and healed fractures that suggest a heavy workload and level of care within the community. The dig site provides insight into how people adapted to harsh desert environments and interacted with other communities along trade routes.
No-till with cover crop systems have produced higher net returns than conventional till in Texas cotton systems. The practice also improves soil health, water storage, and long-term yield potential.
A new experimental approach captures how soil ecosystems respond to multiple drivers, revealing shifts in soil properties and microbial communities. The study's results could help identify dangerous factor combinations and tipping points for soil ecosystems in the future.
A recent study found that fumigants used to control nematodes in potato cropping systems have very minor effects on soil microbial communities. The research suggested that the average efficacy of these pesticides was estimated at 98% across all nematodes studied.
Researchers have discovered that PFASs from ski wax accumulate in soil, earthworms, and bank voles at a Nordic skiing area, indicating potential toxicity. The compounds were found to biomagnify in the food chain, with higher levels detected in top predators.
Climate change is projected to cause a dramatic decline in rice yields, potentially devastating global food supplies. The crop's sensitivity to soil arsenic, exacerbated by increased temperatures and irrigation with high-arsenic water, will lead to twice the normal amount of toxic arsenic in rice.
Researchers have found that fossil pollen can be preserved in floodplain soils, allowing scientists to reconstruct past climate dynamics and land use patterns. The study used soil properties such as organic matter concentration and carbon-to-nitrogen ratio to predict pollen abundance, providing a new tool for climate reconstruction.
A Brazilian study found that removing sugarcane straw could double fertilizer requirements by 2050 due to interrupted nutrient cycling. The researchers suggest leaving a substantial proportion of the straw on the ground to maintain soil health and productivity.
A new report found that climatic variables are the most important predictors of earthworm biodiversity at global scales. Earthworm communities were typically greatest in mid-latitudes, highlighting their sensitivity to climate change.
A new project aims to use Inga trees to keep land fertile for the long term, reducing pressure on smallholders to abandon their land. The plan could help maintain tree cover in the Amazonian Arc of Deforestation by supporting sustainable agriculture and providing a premium income for milk produced from grazing cattle.
Researchers found that while potassium fertilization increases alfalfa yield, it also decreases forage quality. Understanding the tradeoffs between yield and quality is crucial for sustainable production and fertility management.
Researchers from RUDN University found that the rate of organic carbon accumulation in wild, cultivated, and abandoned soils depends mainly on soil type and composition. The study revealed that phaeozems release carbon easily, while chernozems contain more decomposition-resistant compounds.
A four-year study in Colombia's maize-growing region shows that combining farmers' knowledge with data on weather and soils can increase yields substantially. Machine learning algorithms helped develop site-specific guidelines for crop management, reducing fertilizer costs and stabilizing yields.
Researchers successfully grew ten crops in Mars and Moon soil simulant, including garden cress, tomato, and radish. The study found that nine out of ten crops produced edible parts, with the exception of spinach.
A new cost-effective technology, subsurface water retention technology (SWRT), has the potential to significantly improve harvests in sub-Saharan Africa's poor fields. SWRT increases water retention and organic material accumulation, making soils more fertile, resulting in higher maize yields and carbon sequestration.
Researchers emphasize the need to boost phosphorus use efficiency in farming systems due to its limited supply and environmental concerns. Strategies include breeding crops that utilize phosphorus more efficiently, designing crop rotations, and utilizing soil organic matter and arbuscular mycorrhizal fungi.
Researchers developed a biochar technology to reduce carbon dioxide emissions from soils and prevent soil degradation. The innovative method uses chicken dung and agricultural waste to produce biochar, which slows down humus mineralization and stalls CO2 emission.
A study published in Nature Communications reveals that microorganisms residing on plant leaves are connected to those living in the soil, forming a key part of the bioenergy community. The researchers identified hundreds of leaf microbiome members and compared them to thousands in the soil, using deep sequencing techniques.
This special issue highlights von Humboldt's lasting legacy on mountain ecology and environment. Research focuses on species richness, biodiversity evolution, and soil microbial communities in response to climate change.
Researchers at Michigan State University have discovered that many core microbes on bioenergy plant leaves originate from the soil and remain consistent across seasons. The study suggests that these microbes play a crucial role in the plant's growth and health, and their phyllosphere microbiome can be targeted for cultivation.
Research by Anglia Ruskin University found microplastics can stunt earthworm growth and cause weight loss, impacting soil ecosystem health. Soil contamination with certain plastics leads to decreased pH and reduced plant growth.
A community-led approach to understanding and addressing soil pollution in Troy, New York and Tierra Amarilla, Chile. The project aims to raise awareness of the issue and develop strategies for protecting public health through do-it-yourself testing and community engagement.
Scientists have discovered a day-night rhythm in sulfonate metabolism, reflecting the activity of photosynthetic organisms in the open ocean. The study uses phytoplankton and ocean bacteria to track sulfur-based metabolism, providing insights into the global carbon cycle.
Researchers at UTA developed a system to track repairs and data on potentially problematic slopes, reducing repair time from four months to one to two weeks and costs by 20%. The project was recognized as one of AASHTO's top projects in 2019.
A new study found that concurrent soil drought and atmospheric aridity are driven by land-atmosphere processes and feedback loops, leading to increased frequency and intensity of extreme events. The researchers warn that future intensification of these events would be disastrous for ecosystems and human lives.
Climate simulations suggest that land-atmosphere feedbacks can increase atmospheric aridity, leading to high probabilities of concurrent soil drought and extreme aridity. The study also predicts more frequent and intense drought and aridity in the coming century with significant human and ecological implications.
A review of current land surface models highlights the need for more accurate infiltration predictions, which affect erosion control and water supply. The authors recommend increasing attention to soil structure, moisture, temperature, precipitation, terrain, and plants in these models.
Researchers found that 36% of squash bees are chronically exposed to lethal doses of clothianidin in soil, exceeding the acceptable threshold of 5%. This risk is applicable to many other wild bee species in Canada, highlighting the need for new approaches to protect pollinators and crops simultaneously.
Researchers have made a breakthrough in finding the ideal fertilizer rate and source to prevent root damage in canola crops. Using new imaging techniques, they developed dose-response curves for different nitrogen fertilizer sources, revealing that banding urea ammonium nitrate with low rates is the best option.
The UTIA senior design team developed a pilot technology to enhance stormwater infiltration in rain gardens by inducing fractures in compacted soil layers. This technique could save homeowners and property owners time and money by unclogging failed rain gardens.
A team of researchers at Oregon State University has developed a new method for studying tsunami risk to coastal infrastructure. The technique uses a centrifuge to simulate the effects of tsunami waves on soil, allowing for more accurate modeling and potential engineering solutions.
A recent study found that termite activity in wetlands improves soil structure and nutrient content. Termites help turn dead trees into valuable organic matter, increasing crucial soil carbon content.
A German university-led research project is investigating and testing biological methods for remediating soils contaminated with metal. The goal is to find the best combination of fungi and trees to convert heavy metals into biominerals or remove them from the soil.
A study by North Dakota State University researchers found that conservation tillage systems can reduce on-farm costs while preserving long-term productivity, dispelling concerns about lower yields.
Research reveals that active pharmaceutical ingredients can persist in groundwater due to sorption potential and biodegradability. Medicines like ofloxacin and naproxen were detected in groundwater samples, with varying levels of risk to human health.
A recent study found that lower microbial abundance and aggregate protection are coexisting mechanisms underlying lower Q10 in subsoil, while substrate quality and mineral protection play less role. Microbial communities regulate depth-associated variations in Q10 in the active carbon pool, whereas aggregate protection controls it in t...
Researchers at Salk Institute discovered a gene that determines root growth depth in plants, enabling the development of crops with deeper roots to store more carbon. The finding is part of the Harnessing Plants Initiative, which aims to reduce atmospheric CO2 levels through plant-based solutions.
Date palms employ a method of remote germination, pausing their development until conditions are right. When soil temperature increases, the plant emerges with a fully developed leaf and root system.
A team of scientists from the Department of Energy's Lawrence Berkeley National Laboratory developed a new technique called BONCAT to isolate active microbes in soil samples. This breakthrough could enable researchers to better understand terrestrial ecosystems, improve drought-resistance in crops, and sustainably produce fuels.
Researchers at the University of Wisconsin-Madison discovered that temperatures above 100 degrees Fahrenheit kill invasive jumping worm cocoons, potentially limiting their spread. This finding could inform strategies to slow or stop the worms' invasion through heat-treated compost and potted plants.
Researchers tested different soils' responses to multiple biochar types but found no significant impact on plant growth. However, biochar did affect soil greenhouse gas emissions. The study's findings suggest that using biochar as an additive could prevent microbe-generated greenhouse gas emissions.
Current research in belowground botany is advancing our understanding of plant root systems, their structure, and function. New technologies like digital imaging of root traits are enabling scientists to study root systems more effectively.
A research team at Stanford University has developed a new method to clean contaminated soils by rinsing them with a mixture of water and EDTA, a chemical that attracts heavy metals. The process involves percolating the mixture through the soil, collecting the toxic brew, and filtering it to capture the heavy metals.
Big food brands invest in soil health programs to help farmers improve sustainability, cut costs and reduce environmental impact. These programs provide education and data gathering tools for farmers to adopt strategies such as organic production, cover crops and cost-sharing initiatives.
The use of chloropicrin as a preplant soil treatment measure has been found to suppress soilborne pathogenic fungi and some nematodes and insects. Additionally, it results in greater crop yield and health, with treated soil having a healthier root system, improved water use, and more efficient fertilizer use.
A recent study published in Conservation Biology found that Amazonian deforestation leads to reduced abundance and diversity of soil fauna and microbes. The research team also discovered that land use patterns after forest clearance impact soil biodiversity, with certain species more vulnerable to displacement than others.
Researchers discovered a plant virus capable of delivering pesticide molecules deep into the soil, targeting pests like nematodes. The breakthrough could help farmers reduce pesticide use and minimize environmental harm.
Researchers found that nitrogen-rich poop from penguins and seals creates biodiversity hotspots in Antarctica, supporting thriving communities of mosses and lichens. The extent of these hotspots is linked to the number of animals present, not climate or region dryness.
Soil microbiome plays crucial role in woodland health, influencing pathogens that affect holm oak and improving trees' resilience. The study found that beneficial microorganisms like Trichoderma can help prevent oomycete pathogens, while mycorrhizae abundance leads to reduced defoliation.
A UBC researcher's study found that commercial bio-fertilizers may not improve soil quality or crop yields, raising concerns about environmental consequences. The study also highlights the need for more knowledge on the impact of these inoculants on the land and potential invasive species risks.
A strategic mix of cover crops reduces nitrogen loss in the Chesapeake Bay, while also increasing yields in subsequent cash crops. Mixtures with a high proportion of legumes and a low rate of cereal rye are most effective.
About 7-6 million years ago, the Hadley circulation intensified, leading to drier climate, expanding subtropical grasslands and increasing mammal species that eat grasses. The research provides a new understanding of late Miocene ecosystems and their evolution.
A University of Seville study reveals the existence of microscopic life in saline soil, highlighting its potential to inform climate change predictions. The research identifies key factors influencing microbial communities, including salinity, pH, and metals.
Researchers found that in-soil placement of fertilizer resulted in less phosphorus loss from snowmelt runoff. This practice helps roots access and take up phosphorus, reducing its interaction with runoff. The study's findings aim to encourage growers to adopt environmentally friendly practices.
Researchers have discovered naturally occurring photocurrents in iron and manganese mineral coatings on rocks in China. These coatings exhibit stable photocurrents under steady illumination and rapid changes with illumination fluctuations, suggesting a potential role in biogeochemical processes.
Researchers found that plants and microbes forge symbiotic relationships to gain access to nutrients, leading to the dominance of specific tree species in different biomes. This understanding can help predict how ecosystems will shift in response to climate change.