Determining Phosphorus Adsorption Isotherm in Soil and its Relation to Soil Characteristics

Mirfazaelian, Hadi; Hoseini, Yaser; Naseri, Abd Ali; Abbasi, Fariborz

doi:10.3923/ijss.2010.131.139

Cited by 35 publications

(44 citation statements)

References 18 publications

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“…Similar findings were observed by Moazed et al (2010) and Javid and Rowell (2002) that P sorption was considerably linked to clay and organic matter content of the soil. Furthermore, Rashid and Rowell (1988) reported that total P absorbed was directly connected to total surface area and soil clay contents.…”

Section: Discussionsupporting

confidence: 78%

Influence of Incubation Period, Temperature and Different Phosphate Levels on Phosphate Adsorption in Soil

Rajput¹,

Panhwar

Naher³

et al. 2014

American Journal of Agricultural and Biological Sciences

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Phosphorus (P) is the most important element after nitrogen but P sorption properties are poorly documented in many soils. In this study, P sorption capacity in relation to incubation period and temperature under various P levels were determined for two different soil series (Rustam and Miani). Phosphorus was added at 5, 10, 25, 50, 100, 250, 500 and 1000 µg g −1 to the soils and incubated for the period of 1, 3, 7, 15, 30 and 60 days at 25 and 35±1°C temperatures. Phosphorus sorption was significantly influenced by the temperature, added P and incubation period. Clay content has major influence on P sorption. Rustum Series adsorbed more P than that of Miani Series. The P sorption was faster at high temperature (35°C). At the end of period in the Rustum Series with added 2.5 and 1000 µg g −1 P level, P sorption were found 0.7 and 943 µg g −1 , respectively, at 25±1°C temperature, whereas at 35±1°C temperature the respective P sorption for same P levels were 1.8 and 987.0 µg g −1 . In the Miani Series at 25±1°C temperature, P sorption was 0.7 and 941 µg g −1 , while at the temperature of 35±1°C, P sorption were 1.0 and 986 µg g −1 soil. Increasing P levels, temperature and incubation, resulted in higher P sorption. Hence, high clay in combination with calcium carbonate contents enhanced P adsorption, while high organic matter and high native soil P resulted in lesser P adsorption.

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Section: Discussionsupporting

confidence: 78%

Influence of Incubation Period, Temperature and Different Phosphate Levels on Phosphate Adsorption in Soil

Rajput¹,

Panhwar

Naher³

et al. 2014

American Journal of Agricultural and Biological Sciences

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“…Phosphorus occurs in soil in a wide range of organic and inorganic compounds. These phosphorus forms differ in their behaviour (different bonding strengths, stabilities, and degrees of biological availability) in soils (Moazed et al, 2010). Inorganic phosphorus usually accounts for 35% to 70% of the total P in soils.…”

Section: Introductionmentioning

confidence: 99%

The distribution of phosphorus forms and fractions in Retisol under different soil liming management

Jokubauskaitė

Karčauskienė

Antanaitis

et al. 2015

Zemdirbyste-Agriculture

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Investigations on phosphorus (P) distribution in a naturally acid and limed moraine loam, Bathypogleyic Dystric Glossic Retisol were conducted in a site of a long-term experiment at the Vėžaičiai Branch of Lithuanian Research Centre for Agriculture and Forestry in 2008 and 2011. The aim of the present study was to determine the distribution of different phosphorus forms and fractions in naturally acid soil limed for a long time (62 years). During this study different amounts (18.4 and 104.9 t ha -1 ) of lime materials were incorporated into the soil and affected the formation of two soil pH KCl levels -acidic (5.6) and near to neutral (6.7). Seven different organic and mineral phosphate fractions and plant-available phosphorus were determined in the soil. The long-term soil liming was found to have no significant effect on the total P content and its distribution, but caused the changes in the proportions between the different phosphorus forms. Major part of mineral (74.02-83.68%) and organic (88.9-93.8%) P was composed of Al and Fe phosphates. Soil liming using ×2.0 liming rates every 3-4 years influenced a significant increase of the phosphates (AlPO 4 and Al(Fe)PO 4 ) little-available to plants obtained by the second cycle of extraction. It was determined that when soil pH becomes near to neutral, water soluble and plant-available P increases compared to its value measured at native pH. Increase of soil pH KCl till 6.7 had a significant effect on the amount of little plant-available Ca phosphates and less soluble organic phosphorus fraction amount in soil. The relatively optimal amounts of phosphorus fractions available for plants were determined in the soil with a pH KCl of 5.6, achieved by liming with a 0.5 rate every 7 years.

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“…Similar results were reported by Mughogho (1975), where the oxisols from Mulanje district gave high sorption maxima compared to ultisols from Bunda. Gichangi et al (2008), Uzoho and Oti (2005), Tsado et al (2012) and Moazed et al (2010) also found lower sorption maxima and EPR in soils with higher organic matter.…”

Section: Sorption and External Phosphate Requirementmentioning

confidence: 99%

Phosphorus sorption and external phosphorus requirements of ultisols and oxisols in Malawi

Mnthambala¹,

James²,

Max³

et al. 2015

J. Soil Sci. Environ. Manage.

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Oxisols and ultisols are the major soils of Malawi but the P sorption of these soils has not been studied intensively. As of now, in terms of P fertilizer application these soils are treated the same. This research was conducted to determine the phosphate sorption properties and external P requirements (EPR) of these soils and to derive sorption values from selected soil properties. Physical and chemical analysis showed difference in these soils. Soil exchangeable aluminium, soil pH and soil organic matter is some of the soil properties that affect P sorption and these were different in these two soils. The sorption maxima were 315.5 and 413.0 mg P kg -1 for ultisols and oxisols respectively and EPR values were 37.8 and 52.2 mg P kg -1 of soil for ultisols and oxisols respectively. Exchangeable aluminium, soil pH (H2O) , and organic matter found to be highly correlating with sorption maxima. The results from this study showed that, blanket application of phosphate fertilizer may not be a good strategy because ultisols and oxisols demand different amounts of P fertilizer and this blanket application may lead to under-application or over-application of P in some areas. The results also show that farming practices which improve soil organic matter and soil pH should be encouraged.

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Determining Phosphorus Adsorption Isotherm in Soil and its Relation to Soil Characteristics

Cited by 35 publications

References 18 publications

Influence of Incubation Period, Temperature and Different Phosphate Levels on Phosphate Adsorption in Soil

Influence of Incubation Period, Temperature and Different Phosphate Levels on Phosphate Adsorption in Soil

The distribution of phosphorus forms and fractions in Retisol under different soil liming management

Phosphorus sorption and external phosphorus requirements of ultisols and oxisols in Malawi

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