Arsenic Accumulation in Annapolis Valley Orchard Soils

Bishop, R. F.; Chisholm, D.

doi:10.4141/cjss62-011

Cited by 42 publications

(12 citation statements)

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“…In particular, the relatively high water solubility of soil As measured by a number of studies of lead arsenate-contaminated orchard soils suggests that the potential for As uptake into roots and leaf tissues of some crops could be significant. Arsenic uptake from orchard soils is frequently high enough to cause phytotoxicity in sensitive crops (Bishop and Chisholm 1962; Ross and Crowe 1976). Our own studies of As and Pb uptake from orchard soils by leafy green crops showed that there is a wide range of potential for uptake depending on crop species and the part of the plant analyzed (McBride 2013; McBride et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Arsenic and Lead Uptake by Vegetable Crops Grown on an Old Orchard Site Amended with Compost

McBride

Shayler

Russell-Anelli

et al. 2015

Water Air Soil Pollut

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The potential for lead (Pb) and arsenic (As) transfer into vegetables was studied on old orchard land contaminated by lead arsenate pesticides. Root (carrot), leafy (lettuce), and vegetable fruits (green bean, tomato) were grown on seven “miniplots” with soil concentrations ranging from near background to ≈ 800 and ≈ 200 mg kg−1 of total Pb and As, respectively. Each miniplot was divided into sub-plots and amended with 0% (control), 5% and 10% (by weight) compost and cropped for 3 years. Edible portions of each vegetable were analyzed for total Pb and As to test the effect of organic matter on transfer of these toxic elements into the crop. Vegetable Pb and As concentrations were strongly correlated to soil total Pb and As, respectively, but not to soil organic matter content or compost addition level. For Pb vegetable concentrations, carrot ≥ lettuce > bean > tomato. For As, lettuce > carrot > bean > tomato. A complementary single-year study of lettuce, arugula, spinach, and collards revealed a beneficial effect of compost in reducing both Pb and As concentrations in leafy vegetables. Comparisons of all measured vegetable concentrations to international health-based standards indicate that tomatoes can be grown without exceeding standards even in substantially Pb- and As-contaminated soils, but carrots and leafy greens may exceed standards when grown in soils with more than 100–200 mg kg−1 Pb. Leafy greens may also exceed health-based standards in gardens where soil As is elevated, with arugula having a particularly strong tendency to accumulate As.

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Section: Introductionmentioning

confidence: 99%

Arsenic and Lead Uptake by Vegetable Crops Grown on an Old Orchard Site Amended with Compost

McBride

Shayler

Russell-Anelli

et al. 2015

Water Air Soil Pollut

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“…In particular, the relatively high water solubility of soil As measured by a number of studies of lead arsenate-contaminated orchard soils suggests that the potential for As uptake into roots and leaf tissues of some crops could be significant. In fact, As uptake is frequently high enough to cause phytotoxicity in sensitive crops [8, 9]. McBride et al [10] found in one greenhouse experiment that uptake of As into leafy green vegetables from severely contaminated orchard soil (containing 220 and 1300 mg/kg of total As and Pb, respectively) was relatively high (near 10 mg kg −1 As on a dry weight or d.w. basis), and substantially greater than that of Pb (about 3 mg kg −1 Pb d.w.), consistent with the much higher water solubility of As compared to Pb measured in the soil.…”

Section: Introductionmentioning

confidence: 99%

Arsenic and Lead Uptake by Vegetable Crops Grown on Historically Contaminated Orchard Soils

2013

Applied and Environmental Soil Science

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Transfer of Pb and As into vegetables grown in orchard soils historically contaminated by Pb arsenate pesticides was measured in the greenhouse. Lettuce, carrots, green beans and tomatoes were grown on soils containing a range of total Pb (16.5–915 mg/kg) and As (6.9–211 mg/kg) concentrations. The vegetables were acid-digested and analyzed for total Pb and As using ICP-mass spectrometry. Vegetable contamination was dependent on soil total Pb and As content, pH, and vegetable species. Arsenic concentrations were highest in lettuce and green beans, lower in carrots, and much lower in tomato fruit. Transfer of Pb into lettuce and beans was generally lower than that of As, and Pb and As were strongly excluded from tomato fruit. Soil metal concentrations as high as 400 mg/kg Pb and 100 mg/kg As produced vegetables with concentrations of Pb and As below the limits of international health standards.

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“…Arsenic pollution in soil may have toxic effects in vegetation and can adversely affect the animals that feed on that vegetation. Phytotoxicity studies have shown that 7 ppm soluble arsenic causes injury to rice [3] and 9 ppm to peas, beans, and barley [4]. It has also been reported that the toxicity of arsenic may be reduced by applying sulfates of zinc, iron, and aluminum to the soil [5].…”

Section: Introductionmentioning

confidence: 99%

Interaction of Arsenic with Zinc and Organics in a Rice (Oryza sativaL.)–Cultivated Field in India

Das

Garai

Sarkar

et al. 2005

The Scientific World JOURNAL

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A laboratory experiment on an Inceptisol with pH 7.6, organic carbon 6.8 g kg-1, and 0.5 M NaHCO3 extractable arsenic 0.4 mg kg-1 was conducted to study the interaction effect of graded levels of arsenic (0, 5, and 10 mg kg-1) with zinc (0, 10, and 20 mg kg-1) and organics (0, 1, and 2% on soil weight basis) separately on the mobilization of arsenic in soils.The results show that the amount of 0.5 M NaHCO3 extractable arsenic at pH 8.5 increased with the progress of submergence up to 35 days. However, the increase in arsenic concentration was correlated with decreasing application of graded levels of Zn as zinc sulfate. The intensity of reduction varied with varying levels of Zn, being higher (0.73—2.72 mg kg-1) in the treatment where Zn was at 10 mg kg-1 and lower (0.70—1.08 mg kg-1) with Zn at 20 mg kg-1 application.The amount of arsenic content in the soil significantly decreased with the application of varying levels of organics. However, such depressive effect was found more pronounced with well-decomposed farm yard manure than that of vermicompost. The results of field experiments showed that the grain yield between continuous flooding (4.84 t ha-1) and intermittent flooding up to 40 days after transplanting then continuous flooding (4.83 t ha-1) with the application of ZnSO4 at 25 kg ha-1 did not vary. The lowest grain yield (3.65 t ha-1) was recorded in the treatment where intermittent flooding was maintained throughout the growth period without the application of Zn. The amount of arsenic content was, however, recorded much lower in the treatment where intermittent flooding throughout the growth period was maintained with ZnSO4.

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Arsenic Accumulation in Annapolis Valley Orchard Soils

Cited by 42 publications

References 3 publications

Arsenic and Lead Uptake by Vegetable Crops Grown on an Old Orchard Site Amended with Compost

Arsenic and Lead Uptake by Vegetable Crops Grown on an Old Orchard Site Amended with Compost

Arsenic and Lead Uptake by Vegetable Crops Grown on Historically Contaminated Orchard Soils

Interaction of Arsenic with Zinc and Organics in a Rice (Oryza sativaL.)–Cultivated Field in India

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