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Soil also suffers from heat waves: Organic waste boosts its tolerance to 50°C

Phys · · 708 words · By University

Researchers from the University of Córdoba and Bangor University studied the impact of extreme heat on Mediterranean soils and their microbial activity. The study found that organic additives, such as olive pomace, can increase soil resilience and phosphorus availability at temperatures up to 50°C.

open_in_new Read the original article: https://phys.org/news/2026-05-soil-boosts-tolerance-50c.html

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10%
Propaganda Score
confidence: 95%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkFact-Check Results

10 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

info Single Source 7
help Insufficient Evidence 2
check_circle Corroborated 1
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“A study conducted by the University of Córdoba (UCO) in collaboration with the School of Environmental and Natural Sciences at Bangor University in the United Kingdom has determined the temperature limit that soil in various Mediterranean regions can reach before it begins to degrade.”
SINGLE SOURCE
The claim is explicitly stated in a BrightSurf Science News article. Other search results are unrelated to this specific study.
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web search NEUTRAL — A study conducted by the University of Córdoba (UCO) in collaboration with the School of Environmental and Natural Sciences at Bangor University in the United Kingdom has determined the temperature li…
https://www.brightsurf.com/news/86Z0JRK8/soil-also-suffers-f…
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web search NEUTRAL — Bangor, A., et al., ""An Empirical Evaluation of the System Usability Scale"".
https://www.tandfonline.com/doi/abs/10.1080/1044731080220577…
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web search NEUTRAL — UNIVERSITY PARK, Pa. — As climate change nudges the global temperature higher, there is rising interest in the maximum environmental conditions like heat and humidity to which humans can adapt. New Pe…
https://www.psu.edu/news/research/story/humans-cant-endure-t…
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“The paper is published in the European Journal of Soil Science.”
SINGLE SOURCE
The BrightSurf Science News article identifies the European Journal of Soil Science as the publication venue. No other independent sources confirm this specific publication for this study.
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web search NEUTRAL — European Journal of Soil Science.Soil Preservation in a Warming Climate: Organic Amendments Enhance Microbial Carbon Use Efficiency in Mediterranean Soils. 6-Apr-2026. Additional Media. Researcher San…
https://www.brightsurf.com/news/86Z0JRK8/soil-also-suffers-f…
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web search NEUTRAL — European Journal of Soil Biology. Climate change has strongly increased the fire frequency in Mediterranean forests causing changes in soil bacterial, fungal and microarthropod communities. Fire impac…
https://www.academia.edu/82043050/Trends_in_Recovery_of_Medi…
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web search NEUTRAL — Soil chemistry, temperature swings, water infiltration, and even local vegetation can affect what DNA survives in ancient bones and what structural materials endure over time.The study was published i…
https://www.ecoticias.com/en/dna-solves-the-mystery-of-medie…
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“Above 40 degrees, microorganisms' ability to capture carbon diminishes, and it practically "shuts down" at 50 degrees”
SINGLE SOURCE
The specific temperature thresholds (40 and 50 degrees) for carbon capture shutdown are mentioned in the BrightSurf Science News report. Other results discuss carbon in general but not these specific limits for this study.
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web search NEUTRAL — Carbon dioxide is a chemical compound with the chemical formula CO2. It is made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in a gas state …
https://en.wikipedia.org/wiki/Carbon_dioxide
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web search NEUTRAL — Soil respiration stabilized after 32 days in the three soils in the treatment with 3 FTC but continued to decrease in the treatment with 6 FTC. With each successive freeze–thaw cycle, microbial biomas…
https://www.researchgate.net/publication/321360053_Responses…
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web search NEUTRAL — Sieved soil is divided into portions of equal weight (three for agrochemicals, six for non agrochemicals) including portions mixed with the carrier containing the product, and the control. A minimum o…
https://www.oecd.org/en/publications/test-no-217-soil-microo…
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“The higher the temperature they endure, the lower the soil's phosphorus reserve becomes, which is virtually nonexistent when exposed to temperatures above 40 degrees.”
SINGLE SOURCE
The BrightSurf Science News article mentions that organic matter preserves phosphorus reserves and that organic amendments boost resilience, but the specific 'virtually nonexistent above 40 degrees' detail is only found in the context of this specific reporting.
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web search NEUTRAL — Phosphorus is a chemical element; it has symbol P and atomic number 15. All elemental forms of phosphorus are highly reactive and are therefore never found in nature.
https://en.wikipedia.org/wiki/Phosphorus
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web search NEUTRAL — Researchers found that adding organic matter can increase soil resistance to heat waves and preserve phosphorus reserves. Organic amendments like olive pomace proved effective in boosting soil resilie…
https://www.brightsurf.com/news/86Z0JRK8/soil-also-suffers-f…
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web search NEUTRAL — (2018) found that green cane decreased soil pH and increased soil acidity and P availability compared to burnt plots in a long-term experiment on a melanic soil in South Africa.
https://link.springer.com/article/10.1007/s12355-025-01667-2
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“This contribution adds to a comprehensive, multi-stakeholder strategy embodied in the European Soil Monitoring Directive, which aims to achieve healthy soils across Europe by 2030.”
CORROBORATED
Multiple independent sources (European Commission, novasoil, and other web results) confirm the existence of the EU Soil Monitoring Law/Directive and its goal to protect and restore healthy soils.
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web search NEUTRAL — The EU's Soil Monitoring Law protects and restores soils, ensuring that they are used sustainably. Overview. Healthy soils are essential for agricultural productivity, plants’ pest resistance, and nut…
https://environment.ec.europa.eu/topics/soil-health/soil-mon…
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web search NEUTRAL — European soils are under increasing pressure, as a result of a number of key trends including urban sprawl and low land recycling rates, intensification of agriculture, and climate change.
https://ieu-monitoring.com/wp-content/uploads/2024/05/EPRS_B…
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web search NEUTRAL — The Soil Monitoring Directive: A new directive for soil protection. To address this issue, the EU has introduced the Soil Monitoring Law.Monitoring soil health: A key part of the legislation is the es…
https://novasoil-project.eu/index.php/2024/09/04/soil-degrad…
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“the soil samples were first labeled with radioactive carbon-14 isotopes to monitor the microorganisms' respiration.”
SINGLE SOURCE
The use of carbon-14 isotopes to monitor respiration in this specific project is explicitly quoted from the principal investigator, Sana Boubehziz, in the BrightSurf Science News article.
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web search NEUTRAL — Carbon-14, C-14, 14C or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.
https://en.wikipedia.org/wiki/Carbon-14
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web search NEUTRAL — Mediterranean soil, at risk. As the principal investigator on this project, Sana Boubehziz, explains, the soil samples were first labeled with radioactive carbon-14 isotopes to monitor the microorgani…
https://www.brightsurf.com/news/86Z0JRK8/soil-also-suffers-f…
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web search NEUTRAL — Carbon 14 (C14) is an isotope of carbon with 8 neutrons instead of the more common 6 neutrons. It is unstable, and scientists know that it radioactively decays by electron emission to Nitrogen 14, wit…
https://www.physlink.com/education/askexperts/ae403.cfm
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“The goal was to test the resilience of two types of Mediterranean soil—one calcareous from Córdoba and the other more acidic from Badajoz—under different temperature scenarios ranging from 20 to 50 degrees.”
SINGLE SOURCE
The specific test parameters (calcareous soil from Córdoba, acidic soil from Badajoz, 20-50 degrees) are detailed in the BrightSurf Science News report. Other results discuss soil types generally but not this specific study design.
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web search NEUTRAL — The study also provides insights into what we can do to help the soil. Above 40 degrees, microorganisms' ability to capture carbon diminishes, and it practically "shuts down" at 50 degrees— a temperat…
https://www.brightsurf.com/news/86Z0JRK8/soil-also-suffers-f…
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web search NEUTRAL — Table 2 Main soil properties of the acidic and calcareous soils.Columns were packed with either sand, acidic soil, or calcareous soil. Treatments were applied to the top of each column, and leachate w…
https://link.springer.com/article/10.1007/s42729-026-03303-8
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web search NEUTRAL — We tested the incorporation of treated oil drilling waste into gypseous-calcareous soil formulations at rates of 5%, 10%, and 15% by weight and with the addition of 4% lime.
https://jresm.org/article/resm2026-1496me0207rs/
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“This has been demonstrated in tests using alperujo, or olive pomace, the primary byproduct of olive oil production, and organic waste from the treatment plants of Córdoba's municipal water and waste management companies.”
SINGLE SOURCE
The use of alperujo and organic waste from Córdoba's municipal plants is explicitly mentioned in the BrightSurf Science News article. While other sources discuss alperujo generally, only this source links it to this specific study's tests.
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web search NEUTRAL — This has been demonstrated in tests using alperujo , or olive pomace, the primary byproduct of olive oil production, and organic waste from the treatment plants of Córdoba's municipal water and waste …
https://www.brightsurf.com/news/86Z0JRK8/soil-also-suffers-f…
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web search NEUTRAL — This level of control can boost fertilizer performance and environmental safety, advancing alperujo composting practices to a new level of precision and sustainability.Image Credits: University of Cór…
https://bioengineer.org/impact-of-alperujo-storage-duration-…
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web search NEUTRAL — As a waste management option, direct application of alperujo can supply plant nutrients and organic matter to degradation-prone. Mediterranean soils. In order to validate this circular economy fertili…
https://www.researchgate.net/publication/374560891_Is_the_Di…
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“soil samples that received organic additives showed a significant increase in both resistance and phosphorus availability. Specifically, alperujo proved most effective, increasing soil resistance to 50 degrees”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to support or refute the specific effectiveness of alperujo in increasing resistance to 50 degrees.
help
“Sana Boubehziz et al, Soil Preservation in Warming Climate: Organic Amendments Enhance Microbial Carbon Use Efficiency in Mediterranean Soils, European Journal of Soil Science (2026). DOI: 10.1111/ejss.70323”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to verify the specific paper title, author list, or DOI 10.1111/ejss.70323.
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.