Field-Scale Evaluation of Biosolids-Derived Organomineral Fertilisers Applied to Ryegrass (Lolium perenne L.) in England
Table 1
Parameters derived from the response of the grass crop to the application of fertiliser-N in 2009 and 2010.
Parameter
Mean DMY
SD
Response
value
DMYmax
DMY10
Agronomic efficiency
Unit
kg ha−1
kg ha−1
—
—
—
kg ha−1
kg ha−1
kg ha−1
kg ha−1
kg kg−1
Treatment
2009
Control
6188a
126
—
—
—
—
—
—
—
—
Biosolids
9285b
1389
<0.001
0.74
11986
455
11060
270
18.0
OMF10
11270c
1330
<0.001
0.87
12460
219
12255
180
33.7
OMF15
11958d
1643
<0.001
0.94
13798
255
13574
210
35.2
Urea
12230d
1778
<0.001
0.89
14027
248
13820
207
36.9
Treatment
2010
Control
2192a
204
—
—
—
—
—
—
—
—
Biosolids
5394b
1287
<0.001
0.78
7266
364
6581
227
14.1
OMF10
6624c
1080
<0.001
0.90
7651
218
7418
172
25.8
OMF15
7385d
1266
<0.001
0.92
8500
192
8348
162
32.1
Urea
7357d
1240
<0.001
0.90
8477
204
8302
170
30.4
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.