Soil metal immobilization and ryegrass uptake of lead, copper and zinc as affected by application of organic materials as soil amendments in a short‐term greenhouse trial

Nwachukwu, O. I.; Pulford, I. D.

doi:10.1111/j.1475-2743.2009.00212.x

Cited by 25 publications

(19 citation statements)

References 44 publications

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“…Previous studies found that the SSA increased the dry weight yield of maize (Jamali et al 2008), durum wheat (Tamrabet et al 2009), spinach (Ngole 2010), and kenaf cultivar (Andres et al 2010) and bouteloua species (Lara-Villa et al 2011). Nwachukwu and Pulford (2009) found SSA led to increased leaf and root yield of ryegrass. Sivapatham et al (2012) found that the sewage sludge application increased shoot and root biomass of sorghum-sudan grass by two to three folds.…”

Section: Resultsmentioning

confidence: 92%

Growth characteristics, nutrient uptake, and metal accumulation of ryegrass (Lolium perenneL.) in sludge-amended mudflats

Bai

Tao

et al. 2013

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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The objective of this study was to investigate the impact of sewage sludge amendment (SSA), with the rates of 0, 30, 75, 150, and 300 t ha (1 , on soil chemical properties and biomass, aboveground and root growth, and nitrogen and phosphorus uptake of ryegrass (Lolium perenne L.) seedling grown on a mudflat soil. Results showed that SSA modified the chemical properties of mudflat soil by decreasing soil salinity and pH, increasing soil organic matter, total and available N and P, and heavy metals. The biomass of root and aboveground parts of ryegrass showed increments with increasing SSA rates. Maximum increases of 5.6-and 1.3-fold in fresh weight of aboveground parts and root of ryegrass were observed at 300 t ha (1 rate. Root grown at all SSA rates showed positive response to higher nutrient availability in the mudflat soil with increasing root average diameter and volume. The root length and surface area at 30 t ha (1 SSA rate was significantly higher than those in other treatments. The sewage sludge amendment increased N and P content in both aboveground and root parts of ryegrass. Cd, Cr, Cu, Mn, Ni, and Zn accumulation in ryegrass was positively correlated with SSA rates. However, heavy metal concentrations in ryegrass did not exceed the safety standard for feed in China (GB 13078-1999), except for Cd at 300 t ha (1 SSA rate. The study suggests that sewage sludge can be applied for mudflat soil amendment, which provides an innovative solution pertaining to new arable land resources and solid waste disposal. The optimum SSA rate is 150 t ha (1 with maximum plant yield yet permissible metal accumulation.

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Section: Resultsmentioning

confidence: 92%

Growth characteristics, nutrient uptake, and metal accumulation of ryegrass (Lolium perenneL.) in sludge-amended mudflats

Bai

Tao

et al. 2013

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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“…In order to reduce the solubility, leachability, and bioavailability of Pb, As and other toxic metal in contaminated soils, various soil amendments, such as iron salts or iron oxides (Lee et al 2009; Xenidis et al 2010), peats and composts (Hashimoto et al 2011; Kumpiene et al 2007; Nwachukwu and Pulford 2009), gypsum (Hashimoto et al 2011) and phosphate (Chrysochoou et al 2007; Melamed et al 2003; Sneddon et al 2008), have been tested. However, there are questions about the effectiveness of these amendments.…”

Section: Introductionmentioning

confidence: 99%

Lead and Arsenic Uptake by Leafy Vegetables Grown on Contaminated Soils: Effects of Mineral and Organic Amendments

McBride

Simon

Tam

et al. 2012

Water Air Soil Pollut

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To assess strategies for mitigating Pb and As transfer into leafy vegetables from contaminated garden soils, we conducted greenhouse experiments using two field-contaminated soils amended with materials expected to reduce metal phytoavailability. Lettuce and mustard greens grown on these soils were analysed by ICP-MS, showing that some Pb and As transfer into the vegetables occurred from both soils tested, but plant Pb concentrations were highly variable among treatment replicates. Soil-to-plant transfer was more efficient for As than for Pb. Contamination of the leaves by soil particles probably accounted for most of the vegetable Pb, since plant Pb concentrations were correlated to plant tissue concentrations of the immobile soil elements Al and Fe. This correlation was not observed for vegetable As concentrations, evidence that most of the soil-to-plant transfer for this toxic metal occurred by root uptake and translocation into the above-ground tissues. A follow-up greenhouse experiment with lettuce on one of the two contaminated soils revealed a lower and less variable foliar Pb concentration than observed in the first experiment, with evidence of less soil particle contamination of the crop. This reduced transfer of Pb to the crop appeared to be a physical effect attributable to the greater biomass causing reduced overall exposure of the above-ground tissues to the soil surface. Attempts to reduce soil Pb and As solubility and plant uptake by amendment at practical rates with stabilizing materials including composts, peat, Ca phosphate, gypsum and Fe oxide, were generally unsuccessful. Only Fe oxide reduced soluble As in the soil, but this effect did not persist. Phosphate amendment rapidly increased soil As solubility but had no measurable effect on either soil Pb solubility or concentrations of Pb or As in the leafy vegetables. The ineffectiveness of these amendments in reducing Pb transfer into leafy vegetables is attributed in this study to the low initial Pb solubility of the studied soils and the fact that the primary mechanism of Pb transfer is physical contamination.

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“…However, compost decreased shoot dry weight but increased root dry weight up to 2% application rate. Increase in biomass of maize might be due to additional nutrients particularly nitrogen contributed by FYM after decomposition (Clemente et al 2007;Nwachukwu and Pulford 2009). Higher level of FYM produced maximum biomass and this might be due to release of additional nutrients, improved buffering capacity and enhanced nutrient cycling upon decomposition of farm manure Fig.…”

Section: Discussionmentioning

confidence: 98%

Contrasting Effects of Farmyard Manure (FYM) and Compost for Remediation of Metal Contaminated Soil

Ṣābir

Ali

Rehman

et al. 2014

International Journal of Phytoremediation

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We investigated effect of farm yard manure (FYM) and compost applied to metal contaminated soil at rate of 1% (FYM-1, compost-1), 2% (FYM-2, compost-2), and 3% (FYM-3, compost-3). FYM significantly (P < 0.001) increased dry weights of shoots and roots while compost increased root dry weight compared to control. Amendments significantly increased nickel (Ni) in shoots and roots of maize except compost applied at 1%. FYM-3 and -1 caused maximum Ni in shoots (11.42 mg kg(-1)) and roots (80.92 mg kg(-1)), respectively while compost-2 caused maximum Ni (14.08 mg kg(-1)) and (163.87 mg kg(-1)) in shoots and roots, respectively. Plants grown in pots amended with FYM-2 and compost-1 contained minimum Cu (30.12 and 30.11 mg kg(-1)) in shoots, respectively. FYM-2 and compost-2 caused minimum zinc (Zn) (59.08 and 66.0 mg kg(-1)) in maize shoots, respectively. FYM-2 caused minimum Mn in maize shoots while compost increased Mn in shoots and roots compared to control. FYM and compost increased the ammonium bicarbonate diethylene triamine penta acetic acid (AB-DTPA) extractable Ni and Mn in the soil and decreased Cu and Zn. Lower remediation factors for all metals with compost indicated that compost was effective to stabilize the metals in soil compared to FYM.

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Soil metal immobilization and ryegrass uptake of lead, copper and zinc as affected by application of organic materials as soil amendments in a short‐term greenhouse trial

Cited by 25 publications

References 44 publications

Growth characteristics, nutrient uptake, and metal accumulation of ryegrass (Lolium perenneL.) in sludge-amended mudflats

Growth characteristics, nutrient uptake, and metal accumulation of ryegrass (Lolium perenneL.) in sludge-amended mudflats

Lead and Arsenic Uptake by Leafy Vegetables Grown on Contaminated Soils: Effects of Mineral and Organic Amendments

Contrasting Effects of Farmyard Manure (FYM) and Compost for Remediation of Metal Contaminated Soil

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