skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Interactions between organic amendments and phosphate fertilizers modify phosphate sorption processes in an acid soil

Abstract

To determine how organic amendments and phosphate fertilizers interact to modify P sorption processes, three phosphate fertilizers were applied to lignite- and compost-amended acid soil and incubated for either 3 or 26 days. The fertilizers applied were potassium dihydrogen phosphate, triple superphosphate, and diammonium phosphate (DAP). After 3 days of incubation, sorption of all three P sources was decreased in the lignite-amended treatments, whereas P sorption was increased in the compost-amended treatments. Increased incubation time (26 days) resulted in significantly decreased P sorption when DAP was added to lignite-amended treatments. Addition of triple superphosphate increased P sorption in lignite- and compost-amended treatments and decreased solution pH compared with DAP application. In addition to the effect of P source, differences in P sorption between the lignite- and compost-amended treatments were driven by differences in solution chemistry, predominantly solution pH and cation dynamics. Soil amendment and fertilizer addition also increased microbial activity in the incubation systems, as measured by carbon dioxide respiration. It is proposed that the combination of lignite and DAP may contribute to decreased P sorption in acid soils, with the positive effects likely caused by both chemical and biological processes, including the formation of soluble organic-metal complexes.

Authors:
; ; ;  [1]
  1. Rutherglen Center, Rutherglen, Vic. (Australia)
Publication Date:
OSTI Identifier:
21085141
Resource Type:
Journal Article
Journal Name:
Soil Science
Additional Journal Information:
Journal Volume: 173; Journal Issue: 7; Journal ID: ISSN 0038-075X
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; SOILS; LIGNITE; COMPOST; SOIL CHEMISTRY; FERTILIZERS; PHOSPHATES; SORPTION; PH VALUE

Citation Formats

Sckefe, C R, Patti, A F, Clune, T S, and Jackson, W R. Interactions between organic amendments and phosphate fertilizers modify phosphate sorption processes in an acid soil. United States: N. p., 2008. Web.
Sckefe, C R, Patti, A F, Clune, T S, & Jackson, W R. Interactions between organic amendments and phosphate fertilizers modify phosphate sorption processes in an acid soil. United States.
Sckefe, C R, Patti, A F, Clune, T S, and Jackson, W R. 2008. "Interactions between organic amendments and phosphate fertilizers modify phosphate sorption processes in an acid soil". United States.
@article{osti_21085141,
title = {Interactions between organic amendments and phosphate fertilizers modify phosphate sorption processes in an acid soil},
author = {Sckefe, C R and Patti, A F and Clune, T S and Jackson, W R},
abstractNote = {To determine how organic amendments and phosphate fertilizers interact to modify P sorption processes, three phosphate fertilizers were applied to lignite- and compost-amended acid soil and incubated for either 3 or 26 days. The fertilizers applied were potassium dihydrogen phosphate, triple superphosphate, and diammonium phosphate (DAP). After 3 days of incubation, sorption of all three P sources was decreased in the lignite-amended treatments, whereas P sorption was increased in the compost-amended treatments. Increased incubation time (26 days) resulted in significantly decreased P sorption when DAP was added to lignite-amended treatments. Addition of triple superphosphate increased P sorption in lignite- and compost-amended treatments and decreased solution pH compared with DAP application. In addition to the effect of P source, differences in P sorption between the lignite- and compost-amended treatments were driven by differences in solution chemistry, predominantly solution pH and cation dynamics. Soil amendment and fertilizer addition also increased microbial activity in the incubation systems, as measured by carbon dioxide respiration. It is proposed that the combination of lignite and DAP may contribute to decreased P sorption in acid soils, with the positive effects likely caused by both chemical and biological processes, including the formation of soluble organic-metal complexes.},
doi = {},
url = {https://www.osti.gov/biblio/21085141}, journal = {Soil Science},
issn = {0038-075X},
number = 7,
volume = 173,
place = {United States},
year = {Tue Jul 15 00:00:00 EDT 2008},
month = {Tue Jul 15 00:00:00 EDT 2008}
}