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Sabine Ravnskov

Distribution of fertilizer phosphate in a coarse sandy soil profile after different long-term liming strategies

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Distribution of fertilizer phosphate in a coarse sandy soil profile after different long-term liming strategies. / Azeez, Musibau Oyeleke; Christensen, Julie Therese; Ravnskov, Sabine; Heckrath, Goswin Johann; Labouriau, Rodrigo; Christensen, Bent Tolstrup; Rubæk, Gitte Holton.

2018. 69 Abstract from 6th Symposium on Phosphorus in Soils and Plants, Leuven, Belgium.

Research output: Contribution to conferenceConference abstract for conferenceResearch

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Azeez, Musibau Oyeleke et al. Distribution of fertilizer phosphate in a coarse sandy soil profile after different long-term liming strategies. 6th Symposium on Phosphorus in Soils and Plants, 10 Sep 2018, Leuven, Belgium, Conference abstract for conference, 2018. 1 p.

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@conference{d7ca998a2574451cbf1916978b4aa865,
title = "Distribution of fertilizer phosphate in a coarse sandy soil profile after different long-term liming strategies",
abstract = "We studied the distribution of P in the profile of an arable coarse sandy soil at Jyndevad Experimental Station, Denmark, using plots treated with mineral fertilizer P and different rates of lime. Since 1942, lime has been added at three rates while P has been added at an annual rate of 15.6 kg P/ha since 1944. Reference treatments were no lime and no P additions since 1942/44. Soil cores (0-100 cm) were retrieved in autumn 2016 shortly after barley harvest. We hypothesized that long-term liming, and the resulting differences in soil solution pH and cation composition, affects P mobility and sorption properties in the soil profile, and that long-term liming and annual P addition increases soil C content in response to improved crop growth. Soil chemical properties (pH, total P, total inorganic (Pi) and organic P (Po), Olsen P, water extractable P (Pw), soil C, and oxalate-extractable P, Fe and Al) were determined in five depths. The P sorption index (PSI), based on addition of 50-mmol P kg-1 soil, and was used to evaluate soil sorption capacity. Soil pH significantly increased with increased liming addition to at least 70 cm depth. For P fertilized soil, total P, Pi, Olsen P, Pw and oxalate P were significantly higher in 0-30 cm than in soil depth below, indicating that P had not migrated down the soil profile. Liming significantly increased soil C in 0-30 cm. There were strong relations between oxalate-extractable Al and PSI, while the relations between oxalate-extractable Fe and PSI were weak. In conclusion, long-term mineral fertilizer P application only affected the distribution of P to 30 cm depth. P sorption capacity increased substantially with depth until 50 cm, and it was only moderately affected by liming and P additions until 30 cm depth. Furthermore, P sorption capacity was related to the presence of amorphous Al oxides, while the role of amorphous Fe oxides was inferior.",
keywords = "Liming, soil pH, P sorption properties",
author = "Azeez, {Musibau Oyeleke} and Christensen, {Julie Therese} and Sabine Ravnskov and Heckrath, {Goswin Johann} and Rodrigo Labouriau and Christensen, {Bent Tolstrup} and Rub{\ae}k, {Gitte Holton}",
year = "2018",
month = sep,
day = "10",
language = "English",
pages = "69",
note = "6th Symposium on Phosphorus in Soils and Plants ; Conference date: 10-09-2018 Through 13-09-2018",
url = "https://kuleuvencongres.be/PSP6/articles",

}

RIS

TY - ABST

T1 - Distribution of fertilizer phosphate in a coarse sandy soil profile after different long-term liming strategies

AU - Azeez, Musibau Oyeleke

AU - Christensen, Julie Therese

AU - Ravnskov, Sabine

AU - Heckrath, Goswin Johann

AU - Labouriau, Rodrigo

AU - Christensen, Bent Tolstrup

AU - Rubæk, Gitte Holton

PY - 2018/9/10

Y1 - 2018/9/10

N2 - We studied the distribution of P in the profile of an arable coarse sandy soil at Jyndevad Experimental Station, Denmark, using plots treated with mineral fertilizer P and different rates of lime. Since 1942, lime has been added at three rates while P has been added at an annual rate of 15.6 kg P/ha since 1944. Reference treatments were no lime and no P additions since 1942/44. Soil cores (0-100 cm) were retrieved in autumn 2016 shortly after barley harvest. We hypothesized that long-term liming, and the resulting differences in soil solution pH and cation composition, affects P mobility and sorption properties in the soil profile, and that long-term liming and annual P addition increases soil C content in response to improved crop growth. Soil chemical properties (pH, total P, total inorganic (Pi) and organic P (Po), Olsen P, water extractable P (Pw), soil C, and oxalate-extractable P, Fe and Al) were determined in five depths. The P sorption index (PSI), based on addition of 50-mmol P kg-1 soil, and was used to evaluate soil sorption capacity. Soil pH significantly increased with increased liming addition to at least 70 cm depth. For P fertilized soil, total P, Pi, Olsen P, Pw and oxalate P were significantly higher in 0-30 cm than in soil depth below, indicating that P had not migrated down the soil profile. Liming significantly increased soil C in 0-30 cm. There were strong relations between oxalate-extractable Al and PSI, while the relations between oxalate-extractable Fe and PSI were weak. In conclusion, long-term mineral fertilizer P application only affected the distribution of P to 30 cm depth. P sorption capacity increased substantially with depth until 50 cm, and it was only moderately affected by liming and P additions until 30 cm depth. Furthermore, P sorption capacity was related to the presence of amorphous Al oxides, while the role of amorphous Fe oxides was inferior.

AB - We studied the distribution of P in the profile of an arable coarse sandy soil at Jyndevad Experimental Station, Denmark, using plots treated with mineral fertilizer P and different rates of lime. Since 1942, lime has been added at three rates while P has been added at an annual rate of 15.6 kg P/ha since 1944. Reference treatments were no lime and no P additions since 1942/44. Soil cores (0-100 cm) were retrieved in autumn 2016 shortly after barley harvest. We hypothesized that long-term liming, and the resulting differences in soil solution pH and cation composition, affects P mobility and sorption properties in the soil profile, and that long-term liming and annual P addition increases soil C content in response to improved crop growth. Soil chemical properties (pH, total P, total inorganic (Pi) and organic P (Po), Olsen P, water extractable P (Pw), soil C, and oxalate-extractable P, Fe and Al) were determined in five depths. The P sorption index (PSI), based on addition of 50-mmol P kg-1 soil, and was used to evaluate soil sorption capacity. Soil pH significantly increased with increased liming addition to at least 70 cm depth. For P fertilized soil, total P, Pi, Olsen P, Pw and oxalate P were significantly higher in 0-30 cm than in soil depth below, indicating that P had not migrated down the soil profile. Liming significantly increased soil C in 0-30 cm. There were strong relations between oxalate-extractable Al and PSI, while the relations between oxalate-extractable Fe and PSI were weak. In conclusion, long-term mineral fertilizer P application only affected the distribution of P to 30 cm depth. P sorption capacity increased substantially with depth until 50 cm, and it was only moderately affected by liming and P additions until 30 cm depth. Furthermore, P sorption capacity was related to the presence of amorphous Al oxides, while the role of amorphous Fe oxides was inferior.

KW - Liming, soil pH, P sorption properties

M3 - Conference abstract for conference

SP - 69

T2 - 6th Symposium on Phosphorus in Soils and Plants

Y2 - 10 September 2018 through 13 September 2018

ER -