Researcher(s) |
Nathan Dovey Dan Fay Philip Honey |
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Year(s) | 2017 - 2020 |
Contributor | Stirlings to Coast Farmers |
Trial location(s) |
Cranbrook, WA
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This project looked at the long-term effect of P rates on crop production in the APZ.
Phosphorus is an essential nutrient for crop growth. Insufficient plant-available P, ultimately results in reduced yield.
Crops, particularly cereals require a high amount of P for crop production, and P can often be depleted over time if optimal rates are not applied. Given P is an immobile nutrient historical application rates can bank P within the soil profile.
Variable rates of starter fert were applied over a 4 year period, to assess the cumulative yield effect and P balance, to determine an optimal rate for crop production.
The control rate of 100kg/ha of MAPSZC:MOP (15.8kg/ha P), produced identical cumulative yields across the time span of the project to the 140kg/ha luxury rate.
The 80kg/ha application provided sufficient P levels to maintain the phosphorus balance for cumulative yields achieved since 2017. However lower P rates will consume stored soil P reserves.
Lead research organisation | N/A |
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Host research organisation | N/A |
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 | Oilseed: Canola Cereal (Grain): Barley Cereal (Grain): Wheat |
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Treatment type(s) |
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Trial type | Experimental |
Trial design | Randomised,Blocked |
Sow date | Not specified |
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Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Fertiliser |
This trial focused on variable P rates, variable rates of starter ferterliser were applied. Fert applied: Mapszc/MOP 80:20. Rates applied were 40kg/ha- N 3.7, P 6.3, K 4, S 2.6 60kg/ha- N 5.6, P 9.5, K 6, S 3.9 80kg/ha N 7.4, P 12.7, K 8, S 5.2 100kg/ha N 9.3, P15.8, K10, S 6.5 120kg/ha N 11.1, P19, K12, S7.8 140kg/ha N 13, P 22, K14, S 9.2 |
Sow date | Not specified |
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Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Fertiliser |
This trial focused on variable P rates, variable rates of starter ferterliser were applied. Fert applied: Mapszc/MOP 80:20. Rates applied: 40kg/ha- N 3.7, P 6.3, K 4, S 2.6 60kg/ha- N 5.6, P 9.5, K 6, S 3.9 80kg/ha N 7.4, P 12.7, K 8, S 5.2 100kg/ha N 9.3, P15.8, K10, S 6.5 120kg/ha N 11.1, P19, K12, S7.8 140kg/ha N 13, P 22, K14, S 9.2 |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Fertiliser |
This trial focused on variable P rates, variable rates of starter ferterliser were applied. Fert applied: Mapszc/MOP 80:20. Rates applied: 40kg/ha- N 3.7, P 6.3, K 4, S 2.6 60kg/ha- N 5.6, P 9.5, K 6, S 3.9 80kg/ha N 7.4, P 12.7, K 8, S 5.2 100kg/ha N 9.3, P15.8, K10, S 6.5 120kg/ha N 11.1, P19, K12, S7.8 140kg/ha N 13, P 22, K14, S 9.2 |
Sow date | Not specified |
---|---|
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Fertiliser |
This trial focused on variable P rates, variable rates of starter ferterliser were applied. Fert applied: Mapszc/MOP 80:20. Rates applied: 40kg/ha- N 3.7, P 6.3, K 4, S 2.6 60kg/ha- N 5.6, P 9.5, K 6, S 3.9 80kg/ha N 7.4, P 12.7, K 8, S 5.2 100kg/ha N 9.3, P15.8, K10, S 6.5 120kg/ha N 11.1, P19, K12, S7.8 140kg/ha N 13, P 22, K14, S 9.2 |
# | Variety |
Treatment 1
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Growing season | Crop type |
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# | Variety |
Treatment 1
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Trial site |
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