Table 1: Parameters derived from the response of the grass crop to the application of fertiliser-N in 2009 and 2010.

ParameterMean DMYSDResponse value DMYmax DMY10 Agronomic efficiency
Unitkg ha−1kg ha−1kg ha−1kg ha−1kg ha−1kg ha−1kg kg−1

Treatment2009
Control6188a126
Biosolids9285b1389 <0.0010.74119864551106027018.0
OMF1011270c1330 <0.0010.87124602191225518033.7
OMF1511958d1643 <0.0010.94137982551357421035.2
Urea12230d1778 <0.0010.89140272481382020736.9

Treatment2010
Control2192a204
Biosolids5394b1287 <0.0010.787266364658122714.1
OMF106624c1080 <0.0010.907651218741817225.8
OMF157385d1266 <0.0010.928500192834816232.1
Urea7357d1240 <0.0010.908477204830217030.4

Mean DMY is annual dry matter yield across all application rates, and SD is the standard deviation. For mean DMY, different letters indicate values that are significantly different at a 95% confidence interval.