Phosphate Sorption Characteristics of Selected Major Ghanaian Soils

Owusu‐Bennoah, E.; Acquaye, D. K.

doi:10.1097/00010694-198908000-00005

Cited by 51 publications

(18 citation statements)

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“…Total P contents of nine top soils from the Savanna regions of Ghana ranged from 60 to 173 mg kg −1 [63], while Acquaye and Oteng [64] obtained 104…”

Section: Total Phosphorusmentioning

confidence: 99%

Phosphorus Status, Inorganic Phosphorus Forms, and Other Physicochemical Properties of Acid Soils of Farta District, Northwestern Highlands of Ethiopia

Melese

Gebrekidan

Yli‐Halla

et al. 2015

Applied and Environmental Soil Science

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Soil acidity and low availability of P limit crop production in the highlands of Ethiopia. The objective of this study was to determine the P status, distribution and forms of inorganic P and relate them to selected chemical properties of eight representative acidic surface soil samples from Farta District. Soil pH (H 2 O) varied between 4.74 and 5.50. The moderate to high CEC suggests that besides kaolinite, the soils also contain expandable 2 : 1 clay minerals. Though the total P content was high, the available Olsen P content was very low or low in all soils except one. In most soils, the abundance of inorganic P fractions was as follows: P bound by oxalate extractable iron (Fe ox -P) > reductant soluble Fe-P > occluded Al-Fe-P > P bound by oxalate extractable aluminum (Al ox -P) > calcium bound P (Ca-P). Olsen P had a very strong positive correlation ( ≤ 0.01) with Al ox -P ( = 0.98), Fe ox -P ( = 0.96), and oxalate extractable P ( = 0.94). Though Fe bound P reserves were quite abundant and the degree of P saturation of Al ox + Fe ox (median 3.3%) was moderate, the extremely low P saturation of Al ox (median 0.5%) explains the P deficiency of the soils.

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“…Total P contents of nine top soils from the Savanna regions of Ghana ranged from 60 to 173 mg kg −1 [63], while Acquaye and Oteng [64] obtained 104…”

Section: Total Phosphorusmentioning

confidence: 99%

Phosphorus Status, Inorganic Phosphorus Forms, and Other Physicochemical Properties of Acid Soils of Farta District, Northwestern Highlands of Ethiopia

Melese

Gebrekidan

Yli‐Halla

et al. 2015

Applied and Environmental Soil Science

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“…The extracted amorphous Al was probably short ranged Al(OH) 3 (Galarneau and Gehr, 1997), and was expected to be the major adsorbent for P. The sludge had kaolinite, mica, and quartz as major mineral components. Among the major minerals in alum sludge, kaolinite has been known as one of the effective P adsorbents in soils and sediments (Bennoah and Acquaye, 1987). The alum sludge had also a pH value of 7.3, 8.1 cmol/kg of CEC, 4.2 % of CCE and 6.4% of organic C.…”

Section: Characteristics Of Alum Sludgementioning

confidence: 99%

Removal capacity of water plant alum sludge for phosphorus in aqueous solutions

Kim

Moon

et al. 2002

Chemical Speciation & Bioavailability

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“…The P fixation in soils depends upon soil pH, organic matter content and mineralogical constitution of the colloids (Pardon and Guadalix, 1990). Owusu-Bennoah and Acquaye (1989) studied the phosphate sorption characteristics of some Ghanaian soils and found that the phosphate sorption maxima were highly correlated with the soil properties in the order: Al 2 O 3 , clay content, free Fe 2 O 3 and organic carbon. Morel et al (1989) evaluated the phosphate fixing capacity of soils by the isotopic exchange techniques in northeast France and reported that there was a significant correlation between amount of phosphorus fixed, pH, exchangeable cations, clay content and soluble phosphate.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus fixing capacity of a volcanic soil on the slope of mount Cameroon

Tening¹,

Foba-Tendo²

2013

ABJNA

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The volcanic soils on the slope of mount Cameroon are deficient in available phosphorus (P) resulting in low productivity. Excess P could be a threat to the aquatic environment. There is therefore need to monitor the P-fixing capacity of these soils with depth. The transformation of applied P in soils from different horizons were examined after treatments with different P rates (0, 20, 60 and 180 mg P L -1 ) and incubation periods (one, three, seven, 14 and 28 days) under laboratory conditions. Phosphorus was extracted on each treatment combination to determine the amount of P fixed. Phosphorus recovered increased with added P. Phosphorus fixed increased with added P and depth throughout the incubation period. The soil showed a high P fixing capacity throughout the different horizons with P fixed varying between 57-99% in the upper horizons and 90-100% in the lower horizons. More than 90% of added P was fixed after one day of incubation. This therefore reduces the threat of eutrophication. Phosphorus fixed correlated positively with clay and pH, and negatively with organic carbon and available P. Clay had a significant (p<0.05) positive correlation with pH values. Clay and pH could therefore be responsible for P-fixation in this soil.

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Phosphate Sorption Characteristics of Selected Major Ghanaian Soils

Cited by 51 publications

References 0 publications

Phosphorus Status, Inorganic Phosphorus Forms, and Other Physicochemical Properties of Acid Soils of Farta District, Northwestern Highlands of Ethiopia

Phosphorus Status, Inorganic Phosphorus Forms, and Other Physicochemical Properties of Acid Soils of Farta District, Northwestern Highlands of Ethiopia

Removal capacity of water plant alum sludge for phosphorus in aqueous solutions

Phosphorus fixing capacity of a volcanic soil on the slope of mount Cameroon

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