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A causa dell'agricoltura moderna i tassi di erosione nelle praterie in Iowa, Minnesota, South Dakota, Nebraska e Kansas sono cresciuti di mille volte. FOTO: Austin Goode su Unsplash

USA, erosion runs 1000 times faster than normal

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The discovery is contained in a thesis of master at Umass Amherst University. To calculate the rate of erosion, a team of researchers quantified the presence of a rare element - Beryllium 10 - in cultivated prairies in 5 US states, comparing them with virgin soils
A corn field devastated by drought. Land degradation is estimated to cost the United States $67 billion a year. Photo: Bob Nichols, USDA Attribution 2.0 Generic (CC BY 2.0)Bob Nichols, USDA Attribution 2.0 Generic (CC BY 2.0)

Researchers in the U.S. launch five-year soil health survey

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Four U.S. universities are launching a massive soil analysis project. The initiative aims to counter land degradation which is estimated to cost $67 bn a year in America
For years, the amount of sargasso algae present in Caribbean and US waters and beaches has been increasing. And it's no longer relegated to the months when the water is warmer.

Florida, behind the invasion of seaweed two actions of man on land

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The coasts of the US state and other Caribbean states are invaded by abnormal quantities of sargasso: it is estimated that the seaweed are almost 9,000 kilometers long and weigh 20,000 tons. However, the abuse of agricultural fertilizers and deforestation are at the basis of the phenomenon. A confirmation of the bond that unites the health of the soils with that of the oceans
Fungi appear to accelerate plant growth in forests by promoting CO2 removal. Photo: Nicolas Raymond Attribution 2.0 Generic (CC BY 2.0)Nicolas Raymond Attribution 2.0 Generic (CC BY 2.0)

Can soil fungi counteract climate change?

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Fungi appear to accelerate plant growth by promoting CO2 removal. A Texas company wants to explore this potential in the market for emission credits
In the U.S., the area affected by wildfires each year has more than tripled in the past 40 years. Photo: Eric Coulter Bureau of Land Management California Public Domain Mark 1.0Eric Coulter Bureau of Land Management California Public Domain Mark 1.0

Soil analysis can help prevent wildfires

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Wildfires can be predicted through soil moisture assessment. But data collection in the field is not always easy. A group of US researchers is trying to solve the problem
At current rates of extraction, phosphorus production is expected to reach its peak around 2050. Photo: Mick Crawley Attribution-ShareAlike 2.0 Generic (CC BY-SA 2.0)Mick Crawley Attribution-ShareAlike 2.0 Generic (CC BY-SA 2.0)

Global agriculture must reduce its dependence on phosphorus

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Half of the available phosphorus in the soil comes from mineral fertilizers. Europe, Asia and North America show the highest concentrations. French researchers, "We need to accelerate the agroecological transition in rich countries by allocating the remaining resources to the global South"
Salt has always been used on roads to help melt ice during winter periods Photo: Michael Pereckas from Milwaukee, WI, USA Attribution 2.0 Generic (CC BY 2.0)Michael Pereckas from Milwaukee, WI, USA Attribution 2.0 Generic (CC BY 2.0)

Antifreeze salt impacts groundwater year-round

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Used in winter to melt ice from roads, salt seeps deep into groundwater until it reaches surface waters. A University of Delaware study illustrates some of the dynamics that affect the phenomenon
Mud on the roads in Montecito, California, January 2018. Prolonged drought makes soil less permeable promoting landslides during wet periods. Photo: California National Guard Attribution 2.0 Generic (CC BY 2.0)California National Guard Attribution 2.0 Generic (CC BY 2.0)

Climate and drought are the perfect recipe for disruption (not just) in California

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During extended drought periods, soil loses its ability to absorb water, writes The New York Times. When rain occurs, landslide risk increases. A combination of phenomena that climate change makes increasingly frequent
Microbes can help stabilize soil by reducing the risk of collapse during earthquakes. Photo: pxhere CC0 Public Domain Free for personal and commercial use No attribution requiredpxhere CC0 Public Domain Free for personal and commercial use No attribution required

Soil microbes are a valuable resource. Including in case of earthquake

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Nitrogen gas emitted by microbes helps stabilize soil by preventing building collapse during seismic events, US research shows. Encouraging this process means avoiding concrete injections while reducing damage to the environment
The focus of scientists' interest is chitin, a substance that makes up 75 percent of lobster exoskeleton and is also contained in fungal and bacterial pathogens. Photo: Aileen Devlin | Virginia Sea Grant Attribution-NoDerivs 2.0 Generic (CC BY-ND 2.0)Aileen Devlin | Virginia Sea Grant Attribution-NoDerivs 2.0 Generic (CC BY-ND 2.0)

US potatoes survive pests thanks to lobster shell

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Ground shells from lobsters can feed communities of beneficial microbes, creating a line of defense against soil pests. Researchers from University of Maine researchers offer a potential circular solution to safeguard the state's major crop. Which would also avoid tons of waste

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