Phosphate Adsorption Capacity and Organic Matter Effect on Dynamics of P Availability in Upland Ultisol and Lowland Inceptisol

Marsi, Marsi and Kadir, Sabaruddin (2011) Phosphate Adsorption Capacity and Organic Matter Effect on Dynamics of P Availability in Upland Ultisol and Lowland Inceptisol. Tanah Tropika (Tropical Soil), 16 (02). pp. 107-114. ISSN ISSN 0852-257X

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Abstract

Ultisols and Inceptisols were used to investigate the adsorption-desorption capacity of P and the effect of organic matter on the dynamics of P availability in tropical acid soils. The experiment consisted of two sub-experiments. Sub-experiment I was to study the adsorption-desorption capacity of Ultisols, Fresh-water lowland Inceptisols, and tidal-swamp Inceptisols. Therefore, surface soils (0 to 30 cm) of each tested soil were treated with 0, 10, 20, 30, 40, 60, 80, 100, 120, 140, 170, and 200 mg P kg-1 of soil. Sub-experiment II was to study the effects of organic matter application (0, 5, 10, and 15 Mg ha-1) on the dynamics of available P following 60d incubation under room temperature. P fertilizer application significantly affected water soluble-P (WSP) (p<0.01) and soil available P-Bray and Kurtz No. 1 (BKP) (p<0.01) in the three tested soils. The different response of both WSP and BKP confirmed that the soils tested in the current experiment had different soil P buffering capacity in the order of Tidal-lowland Inceptisol>Upland Ultisol>fresh-water Lowland Inceptisol. OM application increased the BKP in all tested soils as compared to the control. Differences in pattern of soil available P dynamics over time were detected between upland soil and two lowland soils used in the current experiment. Keywords: Adsorption-desorption, Inceptisols, organic matter, Ultisols

Item Type:	Article
Subjects:	S Agriculture > S Agriculture (General) > S1-(972) Agriculture (General)
Divisions:	05-Faculty of Agriculture > 54294-Soil Science (S1)
Depositing User:	Ph.D. Sabaruddin Kadir
Date Deposited:	15 Oct 2019 05:38
Last Modified:	15 Oct 2019 05:38
URI:	http://repository.unsri.ac.id/id/eprint/10653

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