Researcher(s) |
Nathan Dovey |
---|---|
Year(s) | 2019 - 2020 |
Contributor | Stirlings to Coast Farmers |
Trial location(s) |
Takalarup, WA
|
The aim of this trial is to evaluate and analyse the effect of deep ripping with inclusion plates on moving surface-applied lime into acidic sub-soil of deep sandy duplex. Additionally, this trial tested farm-sourced lime against commercial grade lime.
In 2019 ameliorating subsoil compaction and improving subsoil acidity improved barley yields by >1t/ha.
Subsoil pH changes were observed in the first year of the trial where inclusion plates were used.
Subsoil pH did not change where surface lime was applied, but inclusion plates were not used to invert the application.
On-Farm sourced lime performed to equally to commercial lime when adjusted to neutralising value percentage (NV%).
In 2020 all treatments yielded significantly better than the UTC. including ripping alone where no lime was applied. highlighting the benefits of amelioration of subsoil compaction.
There was no benefit resulting from commercial lime compared to farm-sourced lime when adjusted to achieve the same neutralising value, however much higher rates of farm sourced lime was needed to achieve this value.
Lead research organisation | N/A |
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Host research organisation |
Stirlings to Coast Farmers |
Trial funding source | Stirlings to Coast Farmers inc. |
Trial funding source | NLP |
Related program | N/A |
Acknowledgments | N/A |
Other trial partners | Not specified |
Crop types | Cereal (Grain): Barley Oilseed: Canola |
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Treatment type(s) |
|
Trial type | Experimental |
Trial design | Randomised,Replicated,Blocked |
Sow date | Not specified |
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Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Soil amelioration |
The amelioration techniques used in this trial were the following: Deep Rip: No Lime Deep Rip + 5 t/ha Commercial Lime Deep Rip + 12 t/ha On Farm Lime Nil Rip + Commercial Lime
|
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Soil amelioration | Not specified |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Soil amelioration | Not specified |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Soil amelioration |
The amelioration techniques used in this trial were the following: Deep Rip: No Lime Deep Rip + 5 t/ha Commercial Lime Deep Rip + 12 t/ha On Farm Lime Nil Rip + Commercial Lime |
# |
Treatment 1
|
Treatment 2
|
Growing season | Trial site | pH CaCl2 (pH) |
---|---|---|---|---|---|
1 | █ Conrol | █ 0-10cm | 2019 | Takalarup (WA) | 4.75 |
2 | █ Deep rip, nil lime | █ 0-10cm | 2019 | Takalarup (WA) | 4.55 |
3 | █ Deep rip, 12t/ha farmer lime | █ 0-10cm | 2019 | Takalarup (WA) | 6.15 |
4 | █ Deep rip- 5t/ha Commercial lime | █ 0-10cm | 2019 | Takalarup (WA) | 6.4 |
5 | █ Nil rip, 5t/ha Commercial lime | █ 0-10cm | 2019 | Takalarup (WA) | 6.35 |
6 | █ Deep rip, nil lime | █ 10-30cm | 2019 | Takalarup (WA) | 4.3 |
7 | █ Deep rip + 5t/ha Commercial lime | █ 10-30cm | 2019 | Takalarup (WA) | 6.15 |
8 | █ Deep rip + 12t/ha Farmer lime | █ 10-30cm | 2019 | Takalarup (WA) | 5.25 |
9 | █ Nil rip + 5t/ha Commercial lime | █ 10-30cm | 2019 | Takalarup (WA) | 4.4 |
10 | █ Control | █ 10-30cm | 2019 | Takalarup (WA) | 4.2 |
# |
Treatment 1
|
Growing season | Trial site | Crop type | Grain yield (t/ha) |
---|---|---|---|---|---|
1 | █ Deep rip, nil lime | 2019 | Takalarup (WA) | Barley | 4.93 |
2 | █ Deep rip + 5t/ha Commercial lime | 2019 | Takalarup (WA) | Barley | 4.4 |
3 | █ Deep rip + 12t/ha Farmer lime | 2019 | Takalarup (WA) | Barley | 5.23 |
4 | █ Nil rip + 5t/ha Commercial lime | 2019 | Takalarup (WA) | Barley | 4.29 |
5 | █ Nil Rip- Nil Lime | 2019 | Takalarup (WA) | Barley | 5.49 |
6 | █ Deep rip, nil lime | 2020 | Takalarup (WA) | Canola | 2.46 |
7 | █ Deep rip + 5t/ha Commercial lime | 2020 | Takalarup (WA) | Canola | 2.51 |
8 | █ Deep rip + 12t/ha Farmer lime | 2020 | Takalarup (WA) | Canola | 2.47 |
9 | █ Nil rip + 5t/ha Commercial lime | 2020 | Takalarup (WA) | Canola | 2.37 |
10 | █ Nil Rip- Nil Lime | 2020 | Takalarup (WA) | Canola | 1.95 |