Soil organic matter evolution after the application of high doses of organic amendments in a Mediterranean calcareous soil

Redox-driven changes in Fe crystallinity and speciation may affect soil organic matter (SOM) stabilization and carbon (C) turnover, with consequent influence on global terrestrial soil organic carbon (SOC) cycling.&#160;Under reducing conditions, increasing concentrations of Fe(II) released in solution from the reductive dissolution of Fe (hydr)oxides may accelerate ferrihydrite transformation, although our understanding of the influence of SOM on these transformations is still lacking.&#160;Here, we evaluated abiotic Fe(II)-catalyzed mineralogical changes in Fe (hydr)oxides in bulk soils and size-fractionated SOM pools (for comparison, fine silt plus clay, FSi+Cl, and fine sand, FSa) of an agricultural soil, unamended or amended with biochar, municipal solid waste compost, and a combination of both.&#160;FSa fractions showed the most significant Fe(II)-catalyzed ferrihydrite transformations with the consequent production of well-ordered Fe oxides irrespective of soil amendment, with the only exception being the compost-amended soils. In contrast, poorly crystalline ferrihydrite still constituted ca. 45% of the FSi+Cl fractions of amended soils, confirming the that the higher SOM content in this fraction inhibits atom exchange between aqueous Fe(II) and the solid phase. Building on our knowledge of Fe(II)-catalyzed mineralogical changes in simple systems, our results evidenced that the mechanisms of abiotic Fe mineral transformations in bulk soils depend on Fe mineralogy, organic C content and quality, and organo-mineral associations that exist across particle-size SOM pools. Our results underline that in the fine fractions the increase in SOM due to organic amendments can contribute to limiting abiotic Fe(II)-catalyzed ferrihydrite transformation, while coarser particle-size fractions represent an understudied pool of SOM subjected to Fe mineral transformations.&#160;

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Long-term effects of manure and fertilization on soil organic matter and quality parameters of a calcareous soil in NW China

Journal of Plant Nutrition and Soil Science ◽

10.1002/jpln.200622012 ◽

2007 ◽

Vol 170 (2) ◽

pp. 234-243 ◽

Cited By ~ 21

Author(s):

Sheng-Mao Yang ◽

Sukhdev S. Malhi ◽

Feng-Min Li ◽

Dong-Rang Suo ◽

Ming-Gang Xu ◽

...

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Calcareous Soil ◽

Quality Parameters ◽

Long Term Effects ◽

Nw China

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Effect of Organic Amendments on the Evolution of Soil Organic Matter in Soils Stressed by Intensive Agricultural Practices

Current Organic Chemistry ◽

10.2174/13852728113179990125 ◽

2013 ◽

Vol 17 (24) ◽

pp. 2998-3005 ◽

Cited By ~ 15

Author(s):

Riccardo Scotti ◽

Pellegrino Conte ◽

Anne Berns ◽

Giuseppe Alonzo ◽

Maria Rao

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Organic Amendments ◽

Agricultural Practices

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Effects of combined application of organic amendments and fertilizers on crop yield and soil organic matter: An integrated analysis of long-term experiments

Agriculture Ecosystems & Environment ◽

10.1016/j.agee.2016.04.004 ◽

2016 ◽

Vol 225 ◽

pp. 86-92 ◽

Cited By ~ 65

Author(s):

Wenliang Wei ◽

Yun Yan ◽

Jian Cao ◽

Peter Christie ◽

Fusuo Zhang ◽

...

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Crop Yield ◽

Organic Amendments ◽

Integrated Analysis ◽

Combined Application ◽

Long Term Experiments

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An adapted sequential chemical fractionation coupled with UV and fluorescence spectroscopy for calcareous soil organic matter study after compost amendment

Microchemical Journal ◽

10.1016/j.microc.2015.08.007 ◽

2016 ◽

Vol 124 ◽

pp. 139-148 ◽

Cited By ~ 10

Author(s):

Olsen Rainness Mouloubou ◽

Pascale Prudent ◽

Stéphane Mounier ◽

Jean-Luc Boudenne ◽

Madi Guirema Abaker ◽

...

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Fluorescence Spectroscopy ◽

Calcareous Soil ◽

Chemical Fractionation ◽

Compost Amendment

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Long-term effects of inorganic fertilization and organic amendments on soil organic matter and soil microbial properties in Andisols

Archives of Agronomy and Soil Science ◽

10.1080/03650340601048595 ◽

2006 ◽

Vol 52 (6) ◽

pp. 617-625 ◽

Cited By ~ 11

Author(s):

Sneh Goyal ◽

Kazunori Sakamoto ◽

Kazuyuki Inubushi ◽

Kunihiko Kamewada

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Organic Amendments ◽

Long Term Effects ◽

Microbial Properties ◽

Soil Microbial ◽

Soil Microbial Properties

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Changes in soil organic matter chemical properties after organic amendments

Chemosphere ◽

10.1016/j.chemosphere.2007.01.058 ◽

2007 ◽

Vol 68 (7) ◽

pp. 1245-1253 ◽

Cited By ~ 18

Author(s):

Julien Sebastia ◽

Jérôme Labanowski ◽

Isabelle Lamy

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Organic Amendments ◽

Chemical Properties

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Repeated short-term organic amendments effects on physical and biological properties of a San Antón soil

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v100i2.12726 ◽

1969 ◽

Vol 100 (2) ◽

pp. 123-140

Author(s):

Ian C. Pagán-Roig ◽

Joaquín A. Chong ◽

José A. Dumas ◽

Consuelo Estévez de Jensen

Keyword(s):

Organic Matter ◽

Humic Acid ◽

Soil Organic Matter ◽

Microbial Biomass ◽

Organic Amendments ◽

Biological Properties ◽

Microbial Biomass C ◽

Microbial Biomass N ◽

Short Term ◽

Biomass N

The objective of this work was to measure the effects of repeated short-term organic amendments that we termed soil treatment management cycles (STMC) on physical and biological properties of a San Antón series soil. Each STMC lasted 60 days and consisted of incorporating 5% organic matter from coffee pulp compost; the planting, growth and incorporation of an intercrop of four green manure species; and the application of mycorrhizae and compost tea. The treatments were labeled: CL0, CL1, CL2 and CL3; where CL0 was the control, CL1 received one STMC, CL2 and CL3 received two and three STMC, respectively. The STMC intended to mimic the overall effect of a sustainable agricultural system, not to measure the individual effects of the practices. All treatments (CL1, CL2, CL3) showed an increase in soil organic matter (p≤0.05). When compared to the CL0 control, saturated hydraulic conductivity increased and bulk density decreased in all soils. Soil macroporosity was significantly increased by CL2 and CL3. Soil aggregate stability increased in CL1, CL2 and CL3 plots. Microbial biomass C increased in treatment CL3, and microbial biomass N increased in CL2 and CL3. The production of stable aggregates was correlated to humic acid content and positively influenced all other physical parameters assessed in this study. The STMC had a positive impact on soil properties by increasing the soil organic matter as well as the humic acid fraction. Soil macroporosity, defined as porosity with radius > 38 µm, was significantly increased by treatments CL2 and CL3. All of the organic matter fractions, including total organic matter, humic acid content, microbial biomass C and microbial biomass N were significantly increased by one or more STMC.

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