The study evaluates the effect of trachyte and basalt powders on soil and maize yield in the Sudano-Sahelian zone of Cameroon. Texture, base saturation, and organic carbon indicate moderate limitations. The climate is favourable for maize cultivation. Rock powder application significantly improves yield, with basalt being more effective than trachyte. The advantage of using rock powders lies in their environmental benefits, long-term effectiveness, and more affordable cost.

In this article, we developed a method to better understand how soil water moisture and salt content affect electrical signals measured from the surface by electromagnetic induction technique. This helps farmers manage irrigation, especially in areas using salty water. By combining field and lab data, we could tell how much each factor—water or salt—affected the signal. This technique offers a faster, easier way to track soil health and could improve how we use water in farming.

Cover crops (CC) are known to help capture nitrates, but their role in mitigating pesticide impacts has been less studied. We evaluated how two CC densities (vs. bare soil) affected pesticide residues in soil and solution over 3 months in a greenhouse pot experiment. Our results show that well-developed CCs enhance pesticide biodegradation across a wide range of active substances, likely by sustaining active edaphic microbiota. This further confirms the role of CCs in groundwater protection.

Black truffle's impact on soil fungi was studied in plantations and forests across seasons via network analysis. Plantations showed more homogeneous and connected fungal network than forests, suggesting greater stability. Black truffle lacked a central role in either system's fungal network. Saprotrophic fungi mainly drove carbon and nutrient cycling. This work improves the understanding of fungal dynamics in black truffle soils and offers insights for better black truffle cultivation.

The objective of this Forum article is to argue that one of the key justifications for developing theories and models of soil processes is that these theories are needed to determine what it is relevant to measure in soils. Without these theories and models to guide us, in particular if we rely on machine-learning and artificial intelligence methods to make progress, we are navigating in the dark, and are likely to base decisions on mere correlations that do not reflect true mechanisms.

The current global context, marked by this year's intense El Niño, underscores the growing severity and destructive consequences of climate change, particularly across the Pacific Rim. With a noticeable increase in the frequency and severity of climate-related disasters, there is a profound and pressing need for effective strategies to enhance regional resilience and mitigate future risks.

How can carbon be stored in red soils? Our 18-yr manure application reveals that applying manure stabilizes soil carbon through two key mechanisms: it helps soil particles clump together, physically shielding the carbon, and it improves soil conditions to promote minerals that act like glue, binding the carbon chemically. This research provides a sustainable strategy for enhancing soil fertility and mitigating climate change.

This manuscript studies the potential of paludiculture to reduce greenhouse gas emissions (GHG) in rewetting peatlands. Results showed that the potential to mitigate GHG emissions could be maximized in nutrient enriched areas, while in low nutrient areas it might be more beneficial not to harvest the biomass. Results also showed that peatland heterogeneity and water table dynamics should be considered to accurately estimate emissions from rewetting peatlands.

To understand how warming will change the dynamics of roots across soil profile, we took usage of a long-term field warming experiment and incubated ¹³C-labelled roots at three different depths. After 3 years of incubation, at compound class level, the effects of warming on decomposition of root-derived hydrolysable lipids were compound class specific. At monomer level, warming effects on suberin-derived monomer decomposition were depth-dependent and their resistance increased with chain length.

Agrogeophysics harnesses geophysical methods for non-invasive, multiscale mapping and monitoring of soil properties and processes in the plant-soil-atmosphere continuum, which are responsible for climate regulation, food production and water security. Here, we present an overview of advances in Agrogeophysics in the last decade and discuss how the contributions to the Special Issue “Agrogeophysics: Illuminating soil’s hidden dimensions” help addressing agricultural and environmental challenges.

We looked at soil carbon storage in bioenergy crop fields that had different levels of plant diversity over 12 years. We discovered that biopores – small holes in the soil formed as roots grow, die, and decompose – are closely linked to the amount of organic carbon in the soil. When there are more biopores, there’s more surface where roots touch the soil, which helps carbon from plants spread out and get stored better.

Soil erosion threatens landscapes worldwide, and understanding how surfaces change over time is key to addressing this issue. We developed a new camera-based system that automatically captures and analyzes daily surface changes on a hillside over several years. Triggered by rain and a clock, the system showed how weather and farming impact the land. Our method offers a powerful way to monitor surface changes and can help improve predictions and solutions for soil erosion.

Alpine soils store much carbon but warming and changes in vegetation could reverse this by turning them into carbon sources. In a one-year laboratory study, we examined alpine forest and pasture soils and added fresh grass litter marked with a carbon tracer to track decomposition under different temperatures. Our findings reveal that fresh plant material drives soil breakdown more than temperature alone, offering new insights into how climate change may affect carbon storage in mountain regions.

The study evaluated how soil properties affect vivianite efficiency as a phosphorus (P) fertilizer. With phosphate rock reserves declining, alternative P sources are crucial. Soil pH and P availability influence the effectiveness of vivianite as a P fertilizer. Higher solubility in acidic soils and low P availability can enhance plant and microbial mobilization, thereby improving its efficiency. Findings highlight the need to consider soil properties for optimal use of alternative P fertilizers.