Manganese response in lupins
Location
Eneabba
Aim
To demonstrate manganese (Mn) response in lupins.
Soil Analysis results
|
Soil Type
|
Depth
(cm)
|
OC
(%)
|
ECEC
(meq/100g)
|
P
(mg/kg)
|
PBI
|
K
(mg/kg)
|
S
(mg/kg)
|
pH
(CaCl2)
|
|
Grey sand
|
0-10
|
1.4
|
3.1
|
15
|
11
|
48
|
10
|
5.2
|
|
|
10-20
|
0.4
|
1.5
|
6
|
4
|
40
|
2
|
5.0
|
Plant Analysis results
Stem tests at flowering indicated that manganese was limiting.
Harvest results
| |
Treatment |
P* |
Mn |
Aug 14 |
Harvest |
|
Seeding
(Kg/ha)
|
Stem Mn
(ppm)
|
Yield
(t/ha) |
|
1
|
-
|
19
|
0
|
7.2
|
1.55
|
|
2
|
48 Big Phos Manganese
|
19
|
2.5
|
15.5
|
2.74
|
|
3
|
96 Big Phos Manganese
|
19
|
5
|
30.0
|
2.75
|
|
4
|
144 Big Phos Manganese
|
19
|
7.5
|
31.0
|
2.56
|
|
| * All Phos added to make phosphorus inputs up to 19kg P/ha |
|
Prob
|
<0.001
|
<0.001
|
|
|
|
|
LSD
|
10.4
|
0.33
|
Key results
- Plant tests identified manganese as limiting
- There was a 0.8t/ha response to Big Phos Manganese
Related Products
For further information on this trial
contact your local area manager.