scholarly journals Organic amendments and phytoremediation of Cd and Pb by lettuce (Lactuca sativaL.) in a contaminated agricultural soil

2021 ◽  
Vol 11 (3) ◽  
pp. 287-294
Author(s):  
Andrés Alberto Azabache Leyton ◽  
Juan De La Paz Rodríguez ◽  
Betsy Liz Argomedo Vásquez ◽  
Ingrid Suail Galván Orcón
Keyword(s):  
Agricultural Soil ◽  
Organic Amendments

scholarly journals Effect of different organic amendments on the dissipation of linuron, diazinon and myclobutanil in an agricultural soil incubated for different time periods

2014 ◽  
Vol 476-477 ◽  
pp. 611-621 ◽  
Author(s):  
Jesús M. Marín-Benito ◽  
Eliseo Herrero-Hernández ◽  
M. Soledad Andrades ◽  
María J. Sánchez-Martín ◽  
M. Sonia Rodríguez-Cruz
Keyword(s):  
Agricultural Soil ◽  
Organic Amendments ◽  
Time Periods

Application of high doses of organic amendments in a Mediterranean agricultural soil: An approach for assessing the risk of groundwater contamination

CATENA ◽  
2015 ◽  
Vol 131 ◽  
pp. 74-83 ◽  
Author(s):  
Ignacio Jorge-Mardomingo ◽  
María Emilia Jiménez-Hernández ◽  
Luis Moreno ◽  
Almudena de la Losa ◽  
María Teresa de la Cruz ◽  
...  
Keyword(s):  
Groundwater Contamination ◽  
Agricultural Soil ◽  
Organic Amendments ◽  
High Doses

Impacts of organic amendments on carbon stocks of an agricultural soil — Comparison of model-simulations to measurements

Geoderma ◽  
2012 ◽  
Vol 189-190 ◽  
pp. 606-616 ◽  
Author(s):  
Kristiina Karhu ◽  
Annemieke I. Gärdenäs ◽  
Jaakko Heikkinen ◽  
Pekka Vanhala ◽  
Mikko Tuomi ◽  
...  
Keyword(s):  
Agricultural Soil ◽  
Organic Amendments ◽  
Carbon Stocks ◽  
Model Simulations

scholarly journals Potential Benefits and Risks for Soil Health Derived From the Use of Organic Amendments in Agriculture

Agronomy ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 542 ◽  
Author(s):  
Urra ◽  
Alkorta ◽  
Garbisu
Keyword(s):  
Sewage Sludge ◽  
Human Health ◽  
Agricultural Soil ◽  
Soil Health ◽  
Organic Matter Content ◽  
Organic Amendments ◽  
Matter Content ◽  
Emerging Pollutants ◽  
Resistant Bacteria ◽  
Human Pathogens

The use of organic amendments in agriculture is a common practice due to their potential to increase crop productivity and enhance soil health. Indeed, organic amendments of different origin and composition (e.g., animal slurry, manure, compost, sewage sludge, etc.) can supply valuable nutrients to the soil, as well as increase its organic matter content, with concomitant benefits for soil health. However, the application of organic amendments to agricultural soil entails a variety of risks for environmental and human health. Organic amendments often contain a range of pollutants, including heavy metals, persistent organic pollutants, potential human pathogens, and emerging pollutants. Regarding emerging pollutants, the presence of antibiotic residues, antibiotic-resistant bacteria, and antibiotic-resistance genes in agricultural amendments is currently a matter of much concern, due to the concomitant risks for human health. Similarly, currently, the introduction of microplastics to agricultural soil, via the application of organic amendments (mainly, sewage sludge), is a topic of much relevance, owing to its magnitude and potential adverse effects for environmental health. There is, currently, much interest in the development of efficient strategies to mitigate the risks associated to the application of organic amendments to agricultural soil, while benefiting from their numerous advantages.

scholarly journals Antibiotic Resistance in Agricultural Soil and Crops Associated to the Application of Cow Manure-Derived Amendments From Conventional and Organic Livestock Farms

2021 ◽  
Vol 8 ◽  
Author(s):  
Leire Jauregi ◽  
Lur Epelde ◽  
Itziar Alkorta ◽  
Carlos Garbisu
Keyword(s):  
Antibiotic Resistance ◽  
Resistance Genes ◽  
Agricultural Soil ◽  
Organic Amendments ◽  
Biological Properties ◽  
Cow Manure ◽  
Amended Soils ◽  
Fresh Manure ◽  
Plant Samples ◽  
Amended Soil

The application of organic amendments to agricultural soil can enhance crop yield, while improving the physicochemical and biological properties of the recipient soils. However, the use of manure-derived amendments as fertilizers entails environmental risks, such as the contamination of soil and crops with antibiotic residues, antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs). In order to delve into these risks, we applied dairy cow manure-derived amendments (slurry, fresh manure, aged manure), obtained from a conventional and an organic farm, to soil. Subsequently, lettuce and wheat plants were grown in the amended soils. After harvest, the abundance of 95 ARGs and MGE-genes from the amended soils and plants were determined by high-throughput qPCR. The structure of soil prokaryotic communities was determined by 16S rRNA amplicon sequencing and qPCR. The absolute abundance of ARGs and MGE-genes differed between treatments (amended vs. unamended), origins of amendment (conventional vs. organic), and types of amendment (slurry vs. fresh manure vs. aged manure). Regarding ARG-absolute abundances in the amendments themselves, higher values were usually found in slurry vs. fresh or aged manure. These abundances were generally higher in soil than in plant samples, and higher in wheat grain than in lettuce plants. Lettuce plants fertilized with conventional amendments showed higher absolute abundances of tetracycline resistance genes, compared to those amended with organic amendments. No single treatment could be identified as the best or worst treatment regarding the risk of antibiotic resistance in soil and plant samples. Within the same treatment, the resistome risk differed between the amendment, the amended soil and, finally, the crop. In other words, according to our data, the resistome risk in manure-amended crops cannot be directly inferred from the analysis of the amendments themselves. We concluded that, depending on the specific question under study, the analysis of the resistome risk should specifically focus on the amendment, the amended soil or the crop.

Altered food web structure and C-flux pathways associated with mineralisation of organic amendments to agricultural soil

2011 ◽  
Vol 48 (2) ◽  
pp. 107-116 ◽  
Author(s):  
Eric Paterson ◽  
Roy Neilson ◽  
Andrew J. Midwood ◽  
Shona M. Osborne ◽  
Allan Sim ◽  
...  
Keyword(s):  
Food Web ◽  
Agricultural Soil ◽  
Organic Amendments ◽  
Food Web Structure ◽  
Web Structure

Variation of the critical-state boundaries of an agricultural soil

1997 ◽  
Vol 48 (4) ◽  
pp. 739-748 ◽  
Author(s):  
B. A. ADAMS ◽  
D. WULFSOHN
Keyword(s):  
Critical State ◽  
Agricultural Soil ◽  
State Boundaries

Evaluation of Pine Bark, Pine Bark With Wood, and Pine Tree Chips as Components of a Container Plant Growing Media

1986 ◽  
Vol 4 (1) ◽  
pp. 22-25 ◽  
Author(s):  
A.J. Laiche ◽  
V.E. Nash
Keyword(s):  
Organic Amendments ◽  
Pine Bark ◽  
Growth Media ◽  
Ligustrum Sinense ◽  
Pine Tree ◽  
Water Holding ◽  
Low Solubility ◽  
Low Nitrogen ◽  
Very High ◽  
Container Plant

Three woody landscape species, Rhododendron indica ‘President Clay’, Ligustrum sinense ‘variegata’, and Ilex crenata ‘compacta’, were grown in media prepared from fresh pine bark, pine bark with wood, and pine tree chips. Although media were variable in physical properties, all exhibited very high hydraulic conductivity and low water holding capacity. The capacity of these media materials to hold fertilizer elements was very low. Nitrogen, potassium, and phosphorus were rapidly removed by leaching while calciuum and magnesium were retained longer because of the low solubility of dolomitic limestone. Pine bark was the best growth media tested for all plant species. Pine bark with wood was less satisfactory than pine bark and growth was poorest in pine tree chips. More research is needed on the use of the organic amendments with greater amounts of wood before being widely used as organic components of growth media.

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