Research Article

Comparison of Raw Dairy Manure Slurry and Anaerobically Digested Slurry as N Sources for Grass Forage Production

Table 5

Soil pH, Bray-P, and exchangeable K at start of experiment and after two years of slurry applications.

PlotpHBray PNH4OAc K
mg kgāˆ’1

Baseline, 12 May 2009
Control6.0173591
Urea6.0176608
Raw-subsurface6.0160598
Raw-broadcast6.0165632
Digested-subsurface6.1140616
Digested-broadcast6.0168612

2 December 2010
Control6.2a173379b
Urea6.0b176286c
Raw-subsurface6.3a186479a
Raw-broadcast6.2a185465a
Digested-subsurface6.2a173447ab
Digested-broadcast6.2a162440ab

Letters in a column within a year indicate significant differences at , letters are not included when no significant differences were found. Samples from different dates were analyzed separately using an ANOVA.