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Applied and Environmental Soil Science
Volume 2010 (2010), Article ID 425613, 6 pages
http://dx.doi.org/10.1155/2010/425613
Research Article

Soil Test Phosphorus Recovery from Livestock Manures Compared with Inorganic Fertilizer in Soil Incubations

1Department of Plant and Animal Sciences, Nova Scotia Agricultural College, P.O. Box 550, Truro, NS, Canada B2N 5E3
2Department of Engineering, Nova Scotia Agricultural College, P.O. Box 550, Truro, NS, Canada B2N 5E3

Received 17 March 2010; Revised 21 June 2010; Accepted 30 August 2010

Academic Editor: Paul Voroney

Copyright © 2010 J. Craig Miller et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper compared dairy and hen manure P recovery relative to fertilizer P recovery for two Nova Scotia soils with different antecedent soil test P (STP), incubated for 5, 15, 30, 60, and 110 days. Fertilizer equivalence of manure P was expressed as P recovery ratio in percentage points (%PRR). Repeated measures analysis with soil pH covariate revealed: (1) manure %PRR averaged 72% (low-STP soil) and 80% (medium-STP soil), (2) there were no significant differences in %PRR between dairy and hen manure, and (3) manure %PRR decreased with incubation time for the low-STP soil but not for the medium-STP soil. The soil pH covariate was significant for both low- and medium-STP soils, and the relationship with %PRR was positive for low- but not for the medium-STP soil.