Research Article

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

Table 6

Annual forage yield and N uptake, 2009 to 2011.

Forage yieldNitrogen uptake
TreatmentDry Mg ha−1N kg ha−1
2009a2010 20112009b20102011

Control8.0b14.1c9.2b283c362cd192c
Urea9.5a18.0a11.1a389a655a296a
Raw- subsurface8.6b16.6ab10.5a330b507b263b
Raw- broadcast7.9b17.0ab10.8a308bc531b254b
Digested-subsurface8.6b16.1b10.9a332b501b239b
Digested-broadcast8.7b17.8a10.9a338b550ab255b

Letters within a column indicate significant differences at .
aValues for forage yield from the first harvest prior to implementation of nitrogen fertilizer treatments and application method were 7.7 Mg ha−1.
bThe N content in forage yield from the first harvest prior to implementation of nitrogen fertilizer treatments and application method was 253 kg N ha−1.