Please use this identifier to cite or link to this item:
Scopus Web of Science® Altmetric
Type: Journal article
Title: Rapid changes in carbon and phosphorus after rewetting of dry soil
Author: Butterly, C.
McNeill, A.
Baldock, J.
Marschner, P.
Citation: Biology and Fertility of Soils, 2011; 47(1):41-50
Publisher: Springer-Verlag
Issue Date: 2011
ISSN: 0178-2762
Statement of
Clayton R. Butterly, Ann M. McNeill, Jeff A. Baldock and Petra Marschner
Abstract: Drying–rewetting (DRW) cycles are important for soil organic matter turnover; however, few studies have considered the short-term effects on nutrient availability. The pulses in soil respiration, extractable C, P and N pools were quantified after a single DRW cycle (ten sampling times over 49 h). Soil was pre-incubated with or without glucose (2.5 g kg−1) for 10 days to induce differences in the size and activity of the microflora and then either subjected to a single DRW cycle (7-day drying period) or kept constantly moist. A resin extractable P (Presin) method was used and compared to extraction of dissolved organic (DOP) and inorganic P (DIP) with a salt solution. The pulse in soil respiration, extractable organic C (EOC), Presin, DOP and DIP was immediate and greatest in the first 2 h. The Presin pulse was two to three times that measured by solution extraction (DIP). Also, Presin quantified temporal changes in P not apparent in DIP, indicating the advantage of anion-exchange membranes in quantifying short-term changes in P availability. The Presin pulse was smaller in the soil incubated with glucose showing that P pulses will be quantitatively smaller in a soil with an active microbial biomass. In contrast to P, pre-incubation with glucose did not alter EOC concentration or the pulse in EOC after rewetting. The Presin pulse had disappeared by 49 h after DRW despite continued elevated rates of respiration. The sustained increase in DIP following DRW may have implications for plant availability or environmental losses.
Keywords: Drying–rewetting
Phosphorus and carbon pulse
Short term
Anion-exchange membrane
Rights: Copyright Springer-Verlag 2010
DOI: 10.1007/s00374-010-0500-x
Appears in Collections:Agriculture, Food and Wine publications
Aurora harvest 5

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.