Researcher(s) |
Nathan Dovey |
---|---|
Contact email | dan.fay@scfarmers.org.au |
Contact phone | 0498278177 |
Year(s) | 2020 - 2021 |
Contributor | Stirlings to Coast Farmers |
Trial location(s) |
Kendenup, WA
South Stirlings, WA |
The trials aim was to assess and evaluate the effectiveness of mid-row banding (MRB) nitrogen, to improve N use efficiency and yields.
The trial involved both a small plot trial at South Stirlings and a broadacre site at Kendenup.
The broadscale trial contained two treatments where 125kg/ha of Urea was applied at seeding. Treatment one was via MRB, treatment two was via top-dressing.
The small plot trial contained 6 treatments, which had a N application seeding and at tillering. Treatment 1, MRB 125kg/ha Urea at seeding & MRB 100L/ha of flexi N at tillering. Treatment 2, MRB 125kg/ha Urea at seeding & Top-dressing 100L/ha of Flexi N at tillering. Treatment 3, Top-dressing 125kg/ha Urea at seeding & MRB 100L/ha of flexi N at tillering. Treatment 4, Top-dressing 125kg/ha Urea at seeding & Top-dressing 100L/ha of Flexi N at tillering. Treatment 5, nil Urea at seeding, & MRB 100L/ha of flexi N at tillering. Treatment 6, Nil Urea & Top-dressing 100L/ha of Flexi N at tillering.
MRB in combination with topdressing was the most effective treatment for improving of NUE and yield
The small plot trial resulted in improved yields and NUE resulting from midrow banding, whilst the broadacre trial did not produce significant differences.
Higher wheat yields were achieved for some of the N treatments that included mid-row banding on N at South Stirlings, however, the same results were not seen at Kendenup.
At South Stirlings the combination of mid-row banding applications of N yielded significantly higher than the other treatments.
MRB of N at both seeding and tillering yielded significantly less than both combinations of mid-row banding and top dressing.
At South Stirlings the two highest yielding treatments resulted from a combination of MRB and topdressing. These treatments also resulted in the greatest NUE.
Lead research organisation |
Stirlings to Coast Farmers |
---|---|
Host research organisation |
Stirlings to Coast Farmers |
Trial funding source | NLP |
Related program | N/A |
Acknowledgments | N/A |
Other trial partners | Not specified |
Crop type | Cereal (Grain): Wheat |
---|---|
Treatment type(s) |
|
Trial type | Experimental |
Trial design | Randomised,Replicated,Unreplicated |
Sow rate or Target density | 120kg/ha |
---|---|
Sowing machinery |
12m Seeding Bar |
Sow date | 8 June 2020 |
Harvest date | Not specified |
Plot size | 110m x 12m |
Plot replication | 3 |
Psuedoreplication | Not specified |
Plot blocking | The blocks were partitioned in a way to ensure similar growing conditions. |
Plot randomisation | The plots were randomised |
Fertiliser |
160kg of starter ferterliser K-Till Extra. This was a broadscale trial with two replicated and randomised treatments. Treatment 1: 125kg/ha of Urea was applied at seeding via MRB. Treatment 2: 125 kg/ha of Urea was applied the day after seeding top-dressing. |
Sow rate or Target density | Not specified |
---|---|
Sowing machinery | Not specified |
Sow date | Not specified |
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Psuedoreplication | Not specified |
Plot blocking | Not specified |
Plot randomisation | Not specified |
Fertiliser | Not specified |
Sow rate or Target density | 125 kg/ha |
---|---|
Sowing machinery |
2.8m plot seeder. |
Sow date | 8 June 2020 |
Harvest date | Not specified |
Plot size | 4.8m x 15m |
Plot replication | 3 |
Psuedoreplication | Not specified |
Plot blocking | Plots were laid out to ensure similar growing conditions. |
Plot randomisation | The plots were randomised |
Fertiliser |
100kg/ha of starter fert was applied, across all plots. This small plot trial contained 6 treatments with 3 replications, which had a N application seeding and at tillering. Treatment 1, MRB 125kg/ha Urea at seeding & MRB 100L/ha of flexi N at tillering. Treatment 2, MRB 125kg/ha Urea at seeding & Top-dressing 100L/ha of Flexi N at tillering. Treatment 3, Top-dressing 125kg/ha Urea at seeding & MRB 100L/ha of flexi N at tillering. Treatment 4, Top-dressing 125kg/ha Urea at seeding & Top-dressing 100L/ha of Flexi N at tillering. Treatment 5, nil Urea at seeding, & MRB 100L/ha of flexi N at tillering. Treatment 6, Nil Urea & Top-dressing 100L/ha of Flexi N at tillering. |
Sow rate or Target density | Not specified |
---|---|
Sowing machinery | Not specified |
Sow date | Not specified |
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Psuedoreplication | Not specified |
Plot blocking | Not specified |
Plot randomisation | Not specified |
Fertiliser | Not specified |
# |
Treatment 1
|
Growing season | Trial site | Grain yield (t/ha) |
---|---|---|---|---|
1 | █ Mid-row banded | 2020 | Kendenup (WA) | 3.01 |
2 | █ Top-Dressed | 2020 | Kendenup (WA) | 3 |
# |
Treatment 1
|
Growing season | Trial site | Protein (%) |
---|---|---|---|---|
1 | █ Mid-row banded | 2020 | Kendenup (WA) | 11.4 |
2 | █ Top-Dressed | 2020 | Kendenup (WA) | 11.6 |
# |
Treatment 1
|
Growing season | Trial site | Grain yield (t/ha) |
---|---|---|---|---|
1 | █ Nil Urea + Top-dressed Flexi-N | 2020 | South Stirlings (WA) | 2.91 |
2 | █ Nil Urea + Banded Flexi-N | 2020 | South Stirlings (WA) | 3.25 |
3 | █ Top-dressed Urea + Top-dressed Flexi-N | 2020 | South Stirlings (WA) | 3.46 |
4 | █ Top-dressed Urea + Banded Flexi-N | 2020 | South Stirlings (WA) | 3.9 |
5 | █ Banded Urea +Top-dressed Flexi-N | 2020 | South Stirlings (WA) | 3.79 |
6 | █ Banded Urea + Banded Flexi-N | 2020 | South Stirlings (WA) | 3.43 |
# |
Treatment 1
|
Growing season | Trial site | Protein (%) |
---|---|---|---|---|
1 | █ Nil Urea + Top-dressed Flexi-N | 2020 | South Stirlings (WA) | 9.73 |
2 | █ Nil Urea + Banded Flexi-N | 2020 | South Stirlings (WA) | 9.63 |
3 | █ Top-dressed Urea + Top-dressed Flexi-N | 2020 | South Stirlings (WA) | 10.07 |
4 | █ Top-dressed Urea + Banded Flexi-N | 2020 | South Stirlings (WA) | 10.17 |
5 | █ Banded Urea + Top-dressed Flexi-N | 2020 | South Stirlings (WA) | 10.07 |
6 | █ Banded Urea+ Banded Flexi-N | 2020 | South Stirlings (WA) | 10.23 |
# |
Treatment 1
|
Growing season | Trial site | NDVI (.) |
---|---|---|---|---|
1 | █ Nil Urea + Top-dressed Flexi-N | 2020 | South Stirlings (WA) | 0.39 |
2 | █ Nil Urea + MRB Flexi-N | 2020 | South Stirlings (WA) | 0.39 |
3 | █ Top-dressed Urea + Top-dressed Flexi-N | 2020 | South Stirlings (WA) | 0.42 |
4 | █ Top-dressed Urea + MRB Flexi-N | 2020 | South Stirlings (WA) | 0.44 |
5 | █ MRB Urea + Top-dressed Flexi-N | 2020 | South Stirlings (WA) | 0.45 |
6 | █ MRB Urea + MRB Flexi-N | 2020 | South Stirlings (WA) | 0.41 |
# |
Treatment 1
|
Growing season | Trial site | NDVI (.) |
---|---|---|---|---|
1 | █ Mid-row banded | 2020 | Kendenup (WA) | 0.436 |
2 | █ Topdressed | 2020 | Kendenup (WA) | 0.444 |
SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.