Residual phosphorus responses in barley
Location
Woodanilling
Aim
To assess the residual value of phosphorus (P) fertiliser applied to wheat in 2006 to barley in 2007.
Soil Analysis results
|
Soil Type
|
Depth
(cm)
|
OC
(%)
|
ECEC
(meq/100g)
|
P
(mg/kg)
|
Fe
|
K
(mg/kg)
|
S
(mg/kg)
|
pH
(Cacl2)
|
|
White Gum gravelly loam
|
0-10cm
|
3.0
|
8.0
|
28
|
765
|
129
|
13
|
5.1
|
Harvest results
| Trt |
2007 Barley
|
2006 Wheat
|
|
N
|
P
|
Yield
(t/ha)
|
Protein
(%)
|
N
|
P
|
Yield
(t/ha)
|
|
1
|
84
|
0
|
4.93
|
10.9
|
64
|
0
|
1.52
|
|
2
|
84
|
0
|
5.33
|
10.9
|
64
|
8
|
1.98
|
|
3
|
84
|
0
|
5.62
|
10.8
|
64
|
16
|
2.44
|
|
4
|
84
|
0
|
5.91
|
10.3
|
64
|
24
|
2.47
|
|
5
|
84
|
32
|
6.86
|
10.1
|
32
|
32
|
2.66
|
| Prob |
<0.001
|
<0.001
|
|
|
<.001
|
| LSD |
0.591
|
0.73
|
|
|
0.268
|
Key results
- The residual response in 2007 to phosphorus applied in 2006 was 0.40 to 0.98 t/ha.
For further information on this trial
contact your local area manager.