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Ghezzehei Soil Physics Lab

@ghezzehei

Soil and Environmental Physics Group at UC Merced https://soilphysics.ucmerced.edu

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08.03.2025
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Latest posts by Ghezzehei Soil Physics Lab @ghezzehei

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Soil structure changes under reduced tillage and cover cropping enhance carbon mineralization in Mediterranean croplands Conservation agriculture practices like no-tillage and cover cropping are promoted for rebuilding soil health and sequestering carbon, but their effectiveness in irrigated systems remains questioned....

New paper: 19 years of conservation tillage + cover crops built 50% more soil carbon, but also created macropore networks that triple carbon mineralization rates when soils are wet.
A carbon sequestration paradox for irrigated agriculture.

#soil
acsess.onlinelibrary.wiley.com/doi/10.1002/...

05.01.2026 19:05 ๐Ÿ‘ 5 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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๐ŸŒŸโœจNew paper: Check out our New Phytologist Tansley review on how changing precipitation patterns (changes in amount, intensity, & frequency of ppt already being observed due to climate change) affect soil organic matter dynamics.
nph.onlinelibrary.wiley.com/doi/epdf/10....
@ghezzehei.bsky.social

22.12.2025 18:54 ๐Ÿ‘ 19 ๐Ÿ” 6 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Fig. 1 Research history of soil organic matter (SOM) dynamics at the plantโ€“faunaโ€“microbe interfaces under changing precipitation and soil water availability.

Fig. 1 Research history of soil organic matter (SOM) dynamics at the plantโ€“faunaโ€“microbe interfaces under changing precipitation and soil water availability.

โœจ Paper spotlight โœจ

(๐Ÿงต 1/6) Soil organic matter dynamics under changing precipitation regimes
nph.onlinelibrary.wiley.com/doi/10.1111/...

@teamrat.bsky.social @aaberhe.com

22.12.2025 18:09 ๐Ÿ‘ 9 ๐Ÿ” 9 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Fig. 2 Individual and interactive impacts of soil physicochemistry, microbes, fauna, and plants on soil organic matter (SOM) dynamics.

Fig. 2 Individual and interactive impacts of soil physicochemistry, microbes, fauna, and plants on soil organic matter (SOM) dynamics.

(๐Ÿงต 2/6) The amount, intensity, and frequency of precipitation have been changing around the world due to climate change. Changing precipitation can impact interactions among plants, microbes, fauna, and soil minerals, altering soil organic matter dynamics.

22.12.2025 18:09 ๐Ÿ‘ 1 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Individual and interactive impacts of soil physicochemistry, microbes, fauna, and plants on soil organic matter dynamics.

Individual and interactive impacts of soil physicochemistry, microbes, fauna, and plants on soil organic matter dynamics.

#TansleyReview SOM under changing precipitation regimes

Min et al. @teamrat.bsky.social

nph.onlinelibrary.wiley.com/doi/10.1111/...

#plantscience

22.12.2025 10:27 ๐Ÿ‘ 4 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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The fall of a prolific science journal exposes the billion-dollar profits of scientific publishing One of the 15 publications that put out the most studies globally has been expelled from the indexing system for irregularities. Its publisher, Elsevier, has a 38% profit margin that reached $1.5 bill...

Under editor Damiร  Barcelรณ, STOTENโ€™s output surged to nearly 10,000 articles a yearโ€”each costing over USD 4,000 to publishโ€”while quality declined under incentives to accept mediocre work. We must prioritize publishing in society-run journals, where editors are accountable to the community?

30.11.2025 19:48 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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UC Merced marks Native American Heritage Month by spotlighting our student-led NISC, where leaders like Chance Zucco and Marissa Bigfeather-Garcia are building community, visibility and belonging on campus. ๐Ÿ”— https://ow.ly/gjXl50XuSij

20.11.2025 18:35 ๐Ÿ‘ 5 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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What if your old T-shirt could feed a field?

UC Merced researchers are leading a project to recycle cotton waste into compost, helping build a more sustainable future from the ground up. ๐Ÿ”— ucm.edu/o75o1l

13.11.2025 18:05 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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As we transition to "clean" energy, we must make sure that it is clean for "everyone". In Europe, experts say, some recycling factories are spotless. But that requires millions of dollars in technology. So we are doing for cheap in Africa poisoning children & adults.
www.nytimes.com/interactive/...

18.11.2025 16:00 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Dr. Michael Mann shares the urgency of climate change and the agency we have to deal with it. Distinguished Climate Speaker, Sierra Nevada Research Institute @ucmerced.bsky.social

17.11.2025 23:59 ๐Ÿ‘ 5 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Interesting! I wish I was there. What was the baseline for the double? One of the charts shows >60% increase from the early 2000s.

13.11.2025 02:56 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Kicking off #canvas25 with a moving land acknowledgement, some Back to the Future fun, and a future-looking panel discussion that ranged from funding and investment, to food equity and security, to advances in data and genetics, to the massive impact AI will have on agriculture.

10.11.2025 01:58 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Bzzz-worthy news ๐Ÿ UC Merced has officially been certified as a Bee Campus USA affiliate, joining campuses nationwide working to create healthier habitats for pollinators. ๐Ÿ”— ucm.edu/zbj8li

05.11.2025 17:02 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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UC Merced is ranked in the Top 25 Best Public Schools by @usnews.com and holds the No. 3 spot in social mobility for the second year in a row. ๐Ÿ”— ucm.edu/nwhjdw

23.09.2025 14:00 ๐Ÿ‘ 6 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Student presidneting slides

Student presidneting slides

Jennifer and Teamrat wearing academic regalia after commencement ceremony

Jennifer and Teamrat wearing academic regalia after commencement ceremony

Attendees of defense listening to Jenniferโ€™s preebtation

Attendees of defense listening to Jenniferโ€™s preebtation

Congratulations to the newly minted PhD from our group, Dr. Jennifer Alvarez/Sagrero. @ucmerced.bsky.social

24.07.2025 00:30 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Is this the transect that Manisha studied?

01.06.2025 14:12 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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โ€‹UC Davis to Close Feed the Future Innovation Labs Amid Loss in USAID Funding For more than a decade, the Feed the Future Innovation Labs at UC Davis haveย strengthened Americaโ€™s leadership in agricultural innovation andย reducedย global hunger and malnutritionย by empowering peopl...

Two UC Davis Feed the Future Innovation Labs, which have strengthened Americaโ€™s leadership in agricultural innovation and reduced global hunger and malnutrition by empowering people in low-income regions worldwide, are closing because of loss of USAID funding. @ucdavis.bsky.social

21.04.2025 16:18 ๐Ÿ‘ 7 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
An image of an ingenious academic abstract, featuring authors arranged in a circular formation. The abstract is replete with wordplay, employing soil orders as a clever literary device.

An image of an ingenious academic abstract, featuring authors arranged in a circular formation. The abstract is replete with wordplay, employing soil orders as a clever literary device.

A colleague suggested a circular authorship list without any order, and I thought it would be fun to ask Claude.ai (@anthropic.com) to create one with a wordplay using soil orders. I had a quick chat with it for 2 minutes, and it came up with this result without me writing a single line of code #AI

12.04.2025 06:23 ๐Ÿ‘ 4 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Looking forward to hosting a discovery session dedicatd to Unearthing soil's secrets at TED2025. We'll get folx to explore one of the earth's most vital and threatened resources โ€”soil; and learn how the complex system beneath your feet is beautiful and key to the diversity of life.
lnkd.in/gnYvQJNa

02.04.2025 00:17 ๐Ÿ‘ 12 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
No-tillage, surface residue retention, and cover crops improved San Joaquin Valley soil health in the long term | Published in California Agriculture By Jeffrey P. Mitchell, Shannon B. Cappellazzi & 19 more. The use of conservation agriculture practices in combination improves soil health, including soil stability and water retention.

dx.doi.org/10.3733/001c...

19.03.2025 21:18 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Forward and inverse modeling of water flow in unsaturated soils with discontinuous hydraulic conductivities using physics-informed neural networks with domain decomposition Abstract. Modeling water flow in unsaturated soils is vital for describing various hydrological and ecological phenomena. Soil water dynamics is described by well-established physical laws (Richardson...

dx.doi.org/10.5194/hess...

19.03.2025 21:18 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Physicsโ€Informed Neural Networks With Monotonicity Constraints for Richardsonโ€Richards Equation: Estimation of Constitutive Relationships and Soil Water Flux Density From Volumetric Water Content Measurements Hydraulic conductivity functions were precisely estimated from only volumetric water content data using the proposed framework Soil water flux density was accurately derived from the trained phys...

dx.doi.org/10.1029/2020...

19.03.2025 21:18 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Impact of biochar amendments on soil water and plant uptake dynamics under different cropping systems A soil hydrological model was used to evaluate the midterm (5-year) effects of three biochar types, derived from local agriculture waste using a mobile pyrolyzer, on soil water and plant uptake dyna...
19.03.2025 21:18 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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The effects of different biocharโ€dairy manure coโ€composts on soil moisture and nutrients retention, greenhouse gas emissions, and tomato productivity: Observations from a soil column experiment Effects of different biochar manure co-composts on soil ecosystem services and tomato productivity were evaluated. A 75% deficit irrigation rate was also imposed on soil treatments. Organic amendmen...
19.03.2025 21:18 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Soil Physics Lab at UC Merced, T.A. Ghezzehei Motivated by the demand to sustainably provide for a growing world population, we study the physical underpinnings that make soils habitable environments.

๐Ÿ‘‹ Hello Bluesky! Ghezzehei Soil Physics lab at UC Merced is here. We combine computational modeling with experimental soil science, mainly focused on sustainable agricultural solutions. Here are selected recent papers from our group.

#SoilScience #ComputationalModeling #SustainableAgriculture

19.03.2025 21:18 ๐Ÿ‘ 16 ๐Ÿ” 4 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
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Biochar impacts on soil moisture retention and respiration in a coarseโ€textured soil under dry conditions Seven biochar derived from local orchard wasted materials were assessed in this study. Almond shell biochar enhanced moisture retention potential of loamy-sand soil. Biochar amended soil maintained .....
19.03.2025 21:18 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0