Nitrogen and phosphorous responses in canola compared to wheat
Location
New Norcia
Aim
To compare nitrogen (N) and phosphorous (P) responses in canola versus wheat.
Soil Analysis results
|
Soil Type
|
Depth
|
OC
|
Nit N
|
Amm N
|
ECEC
|
P
|
PBI
|
S
|
pH
|
|
York Gum gravel loam
|
0-10
|
2.0
|
23
|
3
|
7
|
14
|
38
|
11
|
5.2
|
|
|
10-20cm
|
1.0
|
6
|
1
|
6
|
4
|
31
|
6
|
5.2
|
Plant Analysis results
Nitrogen and phosphorus confirmed as limiting nutrients. All other nutrients adequately supplied.
Harvest results
|
|
|
|
Wheat
|
Canola
|
|
|
N
|
P
|
Yield (t/ha)
|
Protein (%)
|
Yield (t/ha)
|
Oil (%)
|
|
1
|
0
|
0
|
2.54
|
9.0
|
1.28
|
47.3
|
|
2
|
0
|
9
|
3.09
|
8.2
|
1.77
|
47.8
|
|
3
|
60
|
9
|
4.29
|
9.2
|
2.26
|
47.5
|
|
4
|
110
|
9
|
4.78
|
10.1
|
2.65
|
45.5
|
|
5
|
0
|
18
|
3.23
|
8.2
|
1.87
|
47.2
|
|
6
|
60
|
18
|
4.81
|
8.7
|
2.52
|
47.1
|
|
7
|
110
|
18
|
5.39
|
10.0
|
2.88
|
45.1
|
|
8
|
110
|
0
|
3.53
|
10.4
|
1.84
|
45.7
|
|
|
|
Prob
|
<0.001
|
0.006
|
<0.001
|
0.053
|
|
|
|
LSD
|
0.16
|
1.2
|
0.16
|
1.908
|
Key results
- Yields of up to 5.4t/ha in wheat and 2.9t/ha in canola were achieved
- Both crops responded up to 110kg N/ha and 18kg P/ha.
- Canola was as responsive to P (and N) as wheat.
For further information on this trial
contact your local area manager.