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Tatiana Bauer - One of the best experts on this subject based on the ideXlab platform.
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time effect on the stabilization of technogenic Copper Compounds in solid phases of haplic chernozem
Science of The Total Environment, 2018Co-Authors: Tatiana Bauer, D L Pinskii, Tatiana Minkina, Dina Nevidomskaya, Saglara Mandzhieva, Marina Burachevskaya, Victor Chaplygin, Yana PopileshkoAbstract:Abstract We studied the regularities of Cu stabilization in Haplic Chernozem contaminated with easily soluble (acetates, nitrates, sulfates, chlorides) and poorly soluble (acetates, nitrates, sulfates, chlorides) metal Compounds in a five-year model experiment were studied. A low contents of Cu loosely bound Compounds (LBC) (no >5% of total content) unchanging over time were revealed in the uncontaminated soil, which is indicative of the stability of soil processes. The Cu LBC content decreased over time in the soils contaminated with easily soluble Compounds and increased in the soils contaminated with poorly soluble Compounds. In both cases, the contents of Cu LBCs after 5 years of incubation remained higher than in the original uncontaminated soil. The effect of the attendant anions on the Cu LBC content was more apparent under the Cu application of 2000 mg kg −1 than at 300 mg kg −1 . An inverse process characterized by an increase in the concentration of Cu LBCs over time was observed in the soil contaminated with Cu orthophosphate and oxide. Soil contaminated with different Cu Compounds results in soil acidification. According to the effect on the decrease in soil pH, the attendant anions form the following series: SO 4 2 − ≈ Cl − > NO 3 − > Ac − > PO 4 2 − > O 2− , which correlates with the Cu LBC content. Thus, the stabilization of Cu Compounds in the soil is affected by the attendant anions and the interaction time of the metal with the soil solid phases.
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comparing two methods of sequential fractionation in the study of Copper Compounds in haplic chernozem under model experimental conditions
Journal of Soils and Sediments, 2018Co-Authors: Marina Burachevskaya, Tatiana Bauer, Tatiana Minkina, Saglara Mandzhieva, Victor Chaplygin, Svetlana Sushkova, Palma Orlovicleko, Lyudmila Yu Mashtykova, Vishnu D RajputAbstract:Purpose It is very important to obtain the information on the soils capacity to immobilize HMs and distribute them among soil components. The aim of this work was to study the fractional composition of Cu Compounds in Haplic chernozem under model contamination conditions using different fractionation methods.
Marina Burachevskaya - One of the best experts on this subject based on the ideXlab platform.
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time effect on the stabilization of technogenic Copper Compounds in solid phases of haplic chernozem
Science of The Total Environment, 2018Co-Authors: Tatiana Bauer, D L Pinskii, Tatiana Minkina, Dina Nevidomskaya, Saglara Mandzhieva, Marina Burachevskaya, Victor Chaplygin, Yana PopileshkoAbstract:Abstract We studied the regularities of Cu stabilization in Haplic Chernozem contaminated with easily soluble (acetates, nitrates, sulfates, chlorides) and poorly soluble (acetates, nitrates, sulfates, chlorides) metal Compounds in a five-year model experiment were studied. A low contents of Cu loosely bound Compounds (LBC) (no >5% of total content) unchanging over time were revealed in the uncontaminated soil, which is indicative of the stability of soil processes. The Cu LBC content decreased over time in the soils contaminated with easily soluble Compounds and increased in the soils contaminated with poorly soluble Compounds. In both cases, the contents of Cu LBCs after 5 years of incubation remained higher than in the original uncontaminated soil. The effect of the attendant anions on the Cu LBC content was more apparent under the Cu application of 2000 mg kg −1 than at 300 mg kg −1 . An inverse process characterized by an increase in the concentration of Cu LBCs over time was observed in the soil contaminated with Cu orthophosphate and oxide. Soil contaminated with different Cu Compounds results in soil acidification. According to the effect on the decrease in soil pH, the attendant anions form the following series: SO 4 2 − ≈ Cl − > NO 3 − > Ac − > PO 4 2 − > O 2− , which correlates with the Cu LBC content. Thus, the stabilization of Cu Compounds in the soil is affected by the attendant anions and the interaction time of the metal with the soil solid phases.
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comparing two methods of sequential fractionation in the study of Copper Compounds in haplic chernozem under model experimental conditions
Journal of Soils and Sediments, 2018Co-Authors: Marina Burachevskaya, Tatiana Bauer, Tatiana Minkina, Saglara Mandzhieva, Victor Chaplygin, Svetlana Sushkova, Palma Orlovicleko, Lyudmila Yu Mashtykova, Vishnu D RajputAbstract:Purpose It is very important to obtain the information on the soils capacity to immobilize HMs and distribute them among soil components. The aim of this work was to study the fractional composition of Cu Compounds in Haplic chernozem under model contamination conditions using different fractionation methods.
J Garciajimenez - One of the best experts on this subject based on the ideXlab platform.
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protectant activity of reduced concentration Copper sprays against alternaria brown spot on fortune mandarin fruit in spain
Crop Protection, 2009Co-Authors: Antonio Vicent, Josep Armengol, J GarciajimenezAbstract:Abstract Alternaria brown spot (ABS) of mandarins is a serious disease of fruit and foliage of citrus, causing defoliation, fruit drop and rind blemishes on susceptible cultivars. In Spain, the disease causes severe losses on the late-maturing cultivars for export of ‘Fortune’ and ‘Nova’. Several fungicide sprays are needed to protect susceptible organs during the critical infection periods through the growing season. In Spain, Copper Compounds and mancozeb are the only fungicides registered for ABS control in conventional production, and Copper is accepted for organic production as long as total dose does not exceed 6 kg ha −1 annually, but considerably higher amounts are currently applied for ABS control. Therefore, experiments were performed to evaluate the protective effect of reduced Copper concentrations on fruits of the highly susceptible cultivar ‘Fortune’. All Copper Compounds evaluated effectively protected ‘Fortune’ fruit from infection for the 28-d period of study in two field trials, where a daily average of 9 h of leaf wetness was recorded. Reducing the concentration of Copper in the spray tank from 1 to 0.5 g l −1 had no negative effect on persistence. Copper Compounds applied at 0.5 g l −1 displayed excellent rain fastness in the simulated rainfall experiment, even with the highest precipitation of 90 mm. The use of reduced concentration Copper sprays would diminish the economic and environmental costs of disease control and may assist growers moving towards organic production.
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rain fastness and persistence of fungicides for control of alternaria brown spot of citrus
Plant Disease, 2007Co-Authors: Antonio Vicent, Josep Armengol, J GarciajimenezAbstract:Field persistence and simulated rain experiments were conducted to determine the residual activity and rain fastness of several fungicides used for the control of Alternaria brown spot of citrus. Fungicidal activity persisted well in simulated rain experiments, despite the high rainfall amounts tested (40 mm in 2004 and 90 mm in 2005). However, most of the fungicides showed a significant reduction of disease control on fruit of 'Fortune' mandarin in the orchard after natural rain in 2004. Fruit growth rate was low and did not appear to play an important role in decline of fungicide residues. Copper products showed longer residual activity on fruit and higher rain fastness than did mancozeb, difenoconazole, iprodione, famoxadone, and pyraclostrobin. Cuprous oxide and Copper oxychloride SC provided satisfactory disease control on fruit through 28 days and withstood 71 mm of rainfall in the orchard. A 4-week schedule with Copper Compounds is proposed for disease control on Fortune fruit during periods of weather favorable for disease development. Respray to replace fungicide deposit seems to be necessary only after heavy or wind-driven rains. With this program, about half of the sprays applied per season for fruit protection could be saved compared with the current schedule in Spain.
Saglara Mandzhieva - One of the best experts on this subject based on the ideXlab platform.
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time effect on the stabilization of technogenic Copper Compounds in solid phases of haplic chernozem
Science of The Total Environment, 2018Co-Authors: Tatiana Bauer, D L Pinskii, Tatiana Minkina, Dina Nevidomskaya, Saglara Mandzhieva, Marina Burachevskaya, Victor Chaplygin, Yana PopileshkoAbstract:Abstract We studied the regularities of Cu stabilization in Haplic Chernozem contaminated with easily soluble (acetates, nitrates, sulfates, chlorides) and poorly soluble (acetates, nitrates, sulfates, chlorides) metal Compounds in a five-year model experiment were studied. A low contents of Cu loosely bound Compounds (LBC) (no >5% of total content) unchanging over time were revealed in the uncontaminated soil, which is indicative of the stability of soil processes. The Cu LBC content decreased over time in the soils contaminated with easily soluble Compounds and increased in the soils contaminated with poorly soluble Compounds. In both cases, the contents of Cu LBCs after 5 years of incubation remained higher than in the original uncontaminated soil. The effect of the attendant anions on the Cu LBC content was more apparent under the Cu application of 2000 mg kg −1 than at 300 mg kg −1 . An inverse process characterized by an increase in the concentration of Cu LBCs over time was observed in the soil contaminated with Cu orthophosphate and oxide. Soil contaminated with different Cu Compounds results in soil acidification. According to the effect on the decrease in soil pH, the attendant anions form the following series: SO 4 2 − ≈ Cl − > NO 3 − > Ac − > PO 4 2 − > O 2− , which correlates with the Cu LBC content. Thus, the stabilization of Cu Compounds in the soil is affected by the attendant anions and the interaction time of the metal with the soil solid phases.
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comparing two methods of sequential fractionation in the study of Copper Compounds in haplic chernozem under model experimental conditions
Journal of Soils and Sediments, 2018Co-Authors: Marina Burachevskaya, Tatiana Bauer, Tatiana Minkina, Saglara Mandzhieva, Victor Chaplygin, Svetlana Sushkova, Palma Orlovicleko, Lyudmila Yu Mashtykova, Vishnu D RajputAbstract:Purpose It is very important to obtain the information on the soils capacity to immobilize HMs and distribute them among soil components. The aim of this work was to study the fractional composition of Cu Compounds in Haplic chernozem under model contamination conditions using different fractionation methods.
Tatiana Minkina - One of the best experts on this subject based on the ideXlab platform.
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time effect on the stabilization of technogenic Copper Compounds in solid phases of haplic chernozem
Science of The Total Environment, 2018Co-Authors: Tatiana Bauer, D L Pinskii, Tatiana Minkina, Dina Nevidomskaya, Saglara Mandzhieva, Marina Burachevskaya, Victor Chaplygin, Yana PopileshkoAbstract:Abstract We studied the regularities of Cu stabilization in Haplic Chernozem contaminated with easily soluble (acetates, nitrates, sulfates, chlorides) and poorly soluble (acetates, nitrates, sulfates, chlorides) metal Compounds in a five-year model experiment were studied. A low contents of Cu loosely bound Compounds (LBC) (no >5% of total content) unchanging over time were revealed in the uncontaminated soil, which is indicative of the stability of soil processes. The Cu LBC content decreased over time in the soils contaminated with easily soluble Compounds and increased in the soils contaminated with poorly soluble Compounds. In both cases, the contents of Cu LBCs after 5 years of incubation remained higher than in the original uncontaminated soil. The effect of the attendant anions on the Cu LBC content was more apparent under the Cu application of 2000 mg kg −1 than at 300 mg kg −1 . An inverse process characterized by an increase in the concentration of Cu LBCs over time was observed in the soil contaminated with Cu orthophosphate and oxide. Soil contaminated with different Cu Compounds results in soil acidification. According to the effect on the decrease in soil pH, the attendant anions form the following series: SO 4 2 − ≈ Cl − > NO 3 − > Ac − > PO 4 2 − > O 2− , which correlates with the Cu LBC content. Thus, the stabilization of Cu Compounds in the soil is affected by the attendant anions and the interaction time of the metal with the soil solid phases.
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comparing two methods of sequential fractionation in the study of Copper Compounds in haplic chernozem under model experimental conditions
Journal of Soils and Sediments, 2018Co-Authors: Marina Burachevskaya, Tatiana Bauer, Tatiana Minkina, Saglara Mandzhieva, Victor Chaplygin, Svetlana Sushkova, Palma Orlovicleko, Lyudmila Yu Mashtykova, Vishnu D RajputAbstract:Purpose It is very important to obtain the information on the soils capacity to immobilize HMs and distribute them among soil components. The aim of this work was to study the fractional composition of Cu Compounds in Haplic chernozem under model contamination conditions using different fractionation methods.