2. Soils in Arid and Semiarid Environments: the Importance of Organic Carbon and Microbial Populations. Facing the Future

Garcı́a, Carlos; Moreno, Jaime Salom; Hernández, T. P.; Bastida, Felipe; Steven, Blaire

doi:10.1515/9783110419047-002

Cited by 4 publications

(3 citation statements)

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“…In fact, "total" Cu is mentioned without specifying the soil digestion method. In complement, we also noted the empirical equation of Mondaca (2015) (table 2 eq 9) which was tted with data from Chili and can thus be more appropriate for semi-arid region and their typical pedological characteristics and climate compare to Europe (Garcia et al, 2017;Steven, 2017). Finally, among the collected equations, those from McBride et al, (1997) (table 2 eq 3 a-c) are among the most commonly used with more than 36 citations/year.…”

Section: Selection Of the Empirical Equation To Build The Available Cu Mapmentioning

confidence: 77%

Mapping Risks Associated with Soil Copper Contamination Using Availability and Bio-Availability Proxies at the European Scale

Sereni

Guenet

Lamy

2021

Preprint

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Soil contamination by trace elements like copper (Cu) can affect soil functioning. Environmental policies with guidelines and soil survey measurements still refer to the total contents of Cu in soils. However, Cu contents in soil solution or free Cu contents have been shown to be better proxies of risks of Cu mobility or (bio)availability for soil organisms. Several empirical equations have been defined at the local scale to predict the amounts of Cu in soil solution based on both total soil Cu contents and main soil parameters involved in the soil/solution partitioning. Nevertheless, despite the relevance for risk assessment, these equations are not applied at a large spatial scale due to difficulties to perform changes from local to regional. To progress in this challenge, we collected several empirical equations from literature and selected those allowing estimation of the amount of Cu in solution, used as a proxy of available Cu, from the knowledge of both total soil Cu contents and soil parameters. We did the same for the estimation of free Cu in solution, used as a proxy of bioavailable Cu These equations were used to provide European maps of (bio-)available Cu based on the one of total soil Cu over Europe. Results allowed comparing the maps of available and bio-available Cu at the European scale. This was done with respective median values of each form of Cu to identify specific areas of risks linked to these two proxies. Higher discrepancies were highlighted between the map of bioavailable Cu and the map of soil total Cu compared to the Cu available map. Such results can be used to assess environmental-related issues for land use planning.

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Section: Selection Of the Empirical Equation To Build The Available Cu Mapmentioning

confidence: 77%

Mapping Risks Associated with Soil Copper Contamination Using Availability and Bio-Availability Proxies at the European Scale

Sereni

Guenet

Lamy

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…In complement, we also noted the empirical equation of Mondaca et al (2015) (Table 2, Eq. 9) which was fitted with data from Chili and can thus be more appropriate for semi-arid region and their typical pedological characteristics and climate compare to Europe (Garcia et al 2017;Steven 2017). Finally, among the collected equations, those from McBride et al (1997) (Table 2, Eq.…”

Section: Selection Of the Empirical Equation To Build The Available C...mentioning

confidence: 99%

Mapping risks associated with soil copper contamination using availability and bio-availability proxies at the European scale

Sereni

Guenet

Lamy

2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

Soil contamination by trace elements like copper (Cu) can affect soil functioning. Environmental policies with guidelines and soil survey measurements still refer to the total content of Cu in soils. However, Cu content in soil solution or free Cu content have been shown to be better proxies of risks of Cu mobility or (bio-)availability for soil organisms. Several empirical equations have been defined at the local scale to predict the amount of Cu in soil solution based on both total soil Cu content and main soil parameters involved in the soil/solution partitioning. Nevertheless, despite the relevance for risk assessment, these equations are not applied at a large spatial scale due to difficulties to perform changes from local to regional. To progress in this challenge, we collected several empirical equations from literature and selected those allowing estimation of the amount of Cu in solution, used as a proxy of available Cu, from the knowledge of both total soil Cu content and soil parameters. We did the same for the estimation of free Cu in solution, used as a proxy of bio-available Cu. These equations were used to provide European maps of (bio-)available Cu based on the one of total soil Cu over Europe. Results allowed comparing the maps of available and bio-available Cu at the European scale. This was done with respective median values of each form of Cu to identify specific areas of risks linked to these two proxies. Higher discrepancies were highlighted between the map of bio-available Cu and the map of soil total Cu compared to the Cu available map. Such results can be used to assess environmental-related issues for land use planning.

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“…Although the Region of Murcia has a semi-arid Mediterranean climate [12], it is the main Spanish producing area for plain skin melons, a category that includes 'Piel de Sapo' and yellow melons, which accounted for 68% of the national production during 2021 [13]. These areas, which have had a steady diminishing supply of water, have been able to maintain strong agricultural activity, which not only supplies the food necessary to feed a growing population, but also plays an important role in mitigating climate change through the carbon sequestration in the soil [14]. These facts evidence the need to increase agriculture sustainability to ensure the sector's activity, and improving the water use efficiency will minimize the environmental impact and increase the productivity of agricultural systems to achieve economic, social, and environmental benefits.…”

Section: Introductionmentioning

confidence: 99%

Using Soil Water Status Sensors to Optimize Water and Nutrient Use in Melon under Semi-Arid Conditions

Zapata-García,

Temnani,

Berríos

et al. 2023

Agronomy

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Nowadays, agriculture must satisfy the growing demand for food, and increasing its sustainability, from an environmental, economic, and social point of view, is the only way to achieve this. The objective of this study was to increase the water and nutrient use efficiency of a melon crop during two consecutive seasons under commercial conditions, growing under semi-arid area. For this purpose, two treatments were studied: (i) a farmer treatment (FRM), fertigated at ~100% of crop evapotranspiration (ETc) during the whole growing season; and (ii) a precision irrigation treatment (PI), irrigated by adjusting, between flowering and ripening, the weekly farmer irrigation to minimize the leaching below the root system. The threshold for allowable soil water depletion in the active root uptake zone was set at 20–30%. The cumulative water savings in each year relative to the FRM treatment ranged between 30 and 27% for 2020 and 2021, respectively. Yield was not negatively affected, with no differences in fruit load (fruit per m) or fruit weight (kg) between irrigation treatments, although higher yields were obtained in the second year due to seasonal changes. The crop water status indicators evaluated (stem water potential, net photosynthesis, and stomatal conductance) were not affected by the irrigation treatments. Water and nitrogen productivity, on average, increased by 45.5 and 54.4% during the experimental period, respectively; the average PI ascorbic acid content increased by 33.4%.

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2. Soils in Arid and Semiarid Environments: the Importance of Organic Carbon and Microbial Populations. Facing the Future

Cited by 4 publications

References 0 publications

Mapping Risks Associated with Soil Copper Contamination Using Availability and Bio-Availability Proxies at the European Scale

Mapping Risks Associated with Soil Copper Contamination Using Availability and Bio-Availability Proxies at the European Scale

Mapping risks associated with soil copper contamination using availability and bio-availability proxies at the European scale

Using Soil Water Status Sensors to Optimize Water and Nutrient Use in Melon under Semi-Arid Conditions

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