Phosphate retention and extractability in soils of the humid zone in West Africa

Abekoe, M.K.; Sahrawat, K. L.

doi:10.1016/s0016-7061(00)00110-5

Cited by 41 publications

(20 citation statements)

References 18 publications

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“…Similar results for phosphate release were observed by Dev et al (1990) and Abekoe and Sahrawat (2001). Abekoe and Sahrawat (2001) observed that there was a sharp initial increase in phosphate release in the first 2 h followed by a continuous slight release to 16 h.…”

Section: Discussionsupporting

confidence: 88%

Effect of wastewater and compost on leaching nutrients of soil column under basil cultivation

Marofi

Shakarami

Rahimi

et al. 2015

Agricultural Water Management

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Section: Discussionsupporting

confidence: 88%

Effect of wastewater and compost on leaching nutrients of soil column under basil cultivation

Marofi

Shakarami

Rahimi

et al. 2015

Agricultural Water Management

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“…In our study, the P concentration remained < 0.20 and 0.5 mg L -1 in the control treatments, while in the sludge-treated columns the amount of P leached was higher. Similar results for P release were observed by Dev et al (1990) and Abekoe and Sahrawat (2001). Abekoe and Sahrawat (2001) observed that there was a sharp initial increase in P release in the first 2 h followed by a continuous slow release up to 16 h.…”

Section: Leaching Of Phosphorussupporting

confidence: 89%

Leaching of heavy metals and nutrients from calcareous sandy‐loam soil receiving municipal solid sewage sludge

Jalali

Arfania

2010

Z. Pflanzenernähr. Bodenk.

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Leaching column experiments were conducted to determine the degree of mobility of heavy metals (HMs) and nutrients after the addition of municipal solid sewage sludge (MSS) in a sandy-loam soil. Treatments were (1) soil application of low metal content MSS, (2) soil application of metal-enriched municipal solid sewage sludge (EMSS), and (3) control. The MSS application represented a dose of 200 Mg dry weight (dw) ha -1 . Soil columns were incubated at room temperature for 15 d and were irrigated daily with distilled water to make a total of 557 mm. Leachates were collected and analyzed for HMs and nutrients. The Ni and Pb added to soil via MSS and EMSS were found to be leached through the 20 cm columns of calcareous sandy soil although Ni and Pb concentrations in the percolate were small relative to the total amounts of metals applied. Losses of K + from the EMSS, MSS, and control were 92.5, 82.0, and 52.5 kg ha -1 , respectively. Losses of Mg 2+ were in the range from 104.4 (control treatment) to 295.2 kg ha -1 (EMSS), while the loss of Ca 2+ was in the range from 265.0 (control treatment) to 568.2 kg ha -1 (EMSS). The results showed that the amounts of P leached from EMSS (3.02 kg ha -1 ) and MSS (2.97 kg -1 ha -1 ) were significantly larger than those from the control treatment (1.54 kg ha -1 ). The geochemical code Visual MINTEQ was used to calculate saturation indices. Leaching of P in different treatments was controlled by rate-limited dissolution of hydroxyapatite, b-tri-Ca phosphate, and octa-Ca phosphate. The results indicate that application of MSS to a sandy soil, at the loading rate used in this study, may pose a risk in terms of groundwater contamination with Ni, Pb, and the studied nutrients.

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“…Similar results for P release were observed by Dev et al (1990) and Abekoe and Sahrawat (2001). Abekoe and Sahrawat (2001) observed that there was a sharp initial increase in P release in the first 2 h followed by a continued slow release up to 16 h.…”

Section: Soilssupporting

confidence: 89%

Evaluation of phosphorus leaching from contaminated calcareous soils due to the application of sheep manure and ethylenediamine tetraacetic acid

Jalali

Ostovarzadeh

2009

Environ Earth Sci

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Organic amendment application to heavy metal contaminated soils may contribute to leaching of phosphorus (P). The objectives of this study were to determine the influence of sheep manure and ethylenediamine tetraacetic acid (EDTA) on the P leaching from a wide range of calcareous contaminated soils. Glass tubes, 4.9 cm diameter, and 40 cm long, were packed with contaminated soil. The resulting 20 cm long column of soils had bulk density of 1.3-1.4 g cm -3 . The columns were leached with distilled water, 0.01 M EDTA, 0.01 M CaCl 2 or sheep manure extract (SME) solutions. The breakthrough curves for P were different and the amounts of P leached varied considerably between different soils and leaching solutions. The amounts leached with SME were less than the amount added through the SME, indicating that some P was retained by the soil, mainly due to preliminary sorption of organic ligands on to the soil with the creation of new sorbing surfaces. The amount leached with EDTA solution varied from 9.9 to 46.3% of the extractable P when 15 pore volumes had passed through the column. Low amounts of P were leached by 0.01 M CaCl 2 , which is likely to be due to the high concentration of soluble Ca used in the solution. Thus, among leaching solutions the application of EDTA and SME on contaminated calcareous soils might enhance the mobility of P and large amounts of P will be leached, leading to contamination of ground and surface waters.

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Phosphate retention and extractability in soils of the humid zone in West Africa

Cited by 41 publications

References 18 publications

Effect of wastewater and compost on leaching nutrients of soil column under basil cultivation

Effect of wastewater and compost on leaching nutrients of soil column under basil cultivation

Leaching of heavy metals and nutrients from calcareous sandy‐loam soil receiving municipal solid sewage sludge

Evaluation of phosphorus leaching from contaminated calcareous soils due to the application of sheep manure and ethylenediamine tetraacetic acid

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