Flexi-N and seeding rates on wheat
Location
Meckering (WANTFA)
Aim
To determine the effects of various Flexi-N strategies and seeding rate on wheat yield
Soil analysis results
|
Soil Type
|
Depth
(cm)
|
OC
(%)
|
ECEC
(meq/100g)
|
Nit N
(mg/kg)
|
Amm N
(mg/kg)
|
P
(mg/kg)
|
Fe
|
K
(mg/kg)
|
S
(mg/kg)
|
pH
(caCl2)
|
|
Jam loamy sand
|
0-10
|
0.6
|
4.2
|
12
|
3
|
18
|
172
|
18
|
22
|
5.6
|
|
|
10-20
|
0.5
|
1.8
|
3
|
1
|
25
|
234
|
24
|
13
|
4.6
|
Plant analysis results
Nitrogen was the only limiting nutrient.
Harvest results
Trt |
|
|
|
|
|
Harvest |
|
Seed Rate
|
Banded
|
Z30
|
Z37
|
Yield
|
Protein
|
|
(kg/ha)
|
|
(L/ha) |
|
(t/ha)
|
(%)
|
|
1
|
50
|
-
|
-
|
-
|
2.23
|
9.7
|
|
2
|
50
|
-
|
100 Flexi-N
|
-
|
3.29
|
9.1
|
|
3
|
50
|
50 Flexi-N
|
50 Flexi-N
|
-
|
3.18
|
8.9
|
|
4
|
50
|
50 Flexi-N
|
100 Flexi-N
|
-
|
3.80
|
9.3
|
|
5
|
50
|
50 Flexi-N
|
100 Flexi-N
|
50 Flexi-N
|
3.80
|
10.1
|
|
6
|
100
|
-
|
-
|
-
|
2.22
|
9.3
|
|
7
|
100
|
-
|
100 Flexi-N
|
-
|
3.36
|
8.5
|
|
8
|
100
|
50 Flexi-N
|
50 Flexi-N
|
-
|
3.30
|
8.6
|
|
9
|
100
|
50 Flexi-N
|
100 Flexi-N
|
-
|
3.46
|
8.8
|
|
10
|
100
|
50 Flexi-N
|
100 Flexi-N
|
50 Flexi-N
|
3.91
|
9.7
|
|
LSD
|
Seed
|
nsd
|
0.34
|
| |
Flexi-N
|
0.39
|
0.64
|
| |
Seed* FN
|
nsd
|
nsd
|
Key results
- Flexi-N increased yields by up to 1.7 t/ha
- Flexi-N applied at Flag Leaf Emergence (Z37) lifted grain protein to above 9.5%.
- There was no significant effect of seeding rate upon yield.
For further information on this trial
contact your local area manager.