Researcher(s) |
Kate Coffey Nick Poole Cassandra Schefe Michael Straight |
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Year(s) | 2017 |
Contributor | Riverine Plains |
Trial location(s) |
Yarrawonga, VIC
|
This project aims to determine if nitrogen supply is limiting uptake of sulphur in canola crops grown in the Riverine Plains region and whether sulphur uptake and yield is increased in canola when nitrogen is available in non-limiting quantities.
The 2017 project trial assessed the response to nitrogen and sulphur in canola crops of the Riverine Plains by determining:
• the influence of nitrogen and sulphur application on canola tissue content, yield and oil
• the fluctuation in nitrogen and sulphur content and nitrogen:sulphur ratio in the plant from stem elongation (GS31) to harvest (GS99)
• the optimum available soil nitrogen level for the region’s canola crops at varying sulphur application rates.
• At the Howlong site, applied nitrogen gave a yield and dry matter (DM) response, however there was no sulphur response.
• The Yarrawonga site showed a clear response to applied sulphur (S) and nitrogen (N), despite high soil sulphur levels. This suggests canola roots may not be effectively exploring the soil profile to access soil sulphur.
• The Yarrawonga site had an optimum sulphur application rate of 20kg S/ha, with yield penalties measured with sulphur rates above and below this optimal rate.
• The dry finish to the season caused significant challenges during 2017. This trial will be repeated at two sites during 2018 to understand how variable the responses to sulphur are likely to be during different seasonal conditions.
Lead research organisation |
Riverine Plains |
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Host research organisation |
Riverine Plains |
Trial funding source | GRDC RPI00013 |
Related program | N/A |
Acknowledgments |
Riverine Plains Inc acknowledges the investment made by the GRDC to the Optimising crop nutrition in canola in the southern region of NSW (RPI00013) project. We also thank trial contractors FAR Australia and our farmer co-operators, the Cummins family, Yarrawonga and the Trevethan family, Howlong. |
Other trial partners | FAR Australia |
Crop type | Oilseed: Canola |
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Treatment type(s) |
|
Trial type | Experimental |
Trial design | Randomised,Replicated |
Sow date | 24 April 2017 |
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Harvest date | 22 November 2017 |
Plot size | Not specified |
Plot replication | Not specified |
@T1: | @T2: | @T3: | @T4: | @T5: | |||||||||
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# |
Treatment 1
|
Oil (%) | Yield (t/ha) | Protein (%) | Crop vigour (1-9) | Dry matter (t/ha) | Nitrogen Content (kg N/ha) | Sulphur content (kg S/ha) | Nitrogen Content (kg N/ha) | Sulphur content (kg S/ha) | Dry matter (t/ha) | Green leaf retention (1-100) | Green leaf retention (1-100) |
1 | █ UTC | 47.3 | 1.53 | 16 | 5.8 | 3.26 | 61 | 16 | 42 | 18 | 6.72 | 60 | 43.8 |
1 | █ UTC | 47.1 | 1.49 | 16.6 | 5 | 3.16 | 53 | 12 | 41 | 24 | 5.58 | 57.5 | 40 |
1 | █ UTC | 47.3 | 1.7 | 16 | - | - | - | 58.8 | 43.8 | ||||
1 | █ UTC | 47.8 | 1.32 | 15.8 | - | - | - | 53.8 | 41.3 | ||||
1 | █ 40N:0S | 46.7 | 1.98 | 16.4 | 5.5 | 2.4 | 55 | 11 | 55 | 25 | 8.44 | 65 | 43.8 |
1 | █ 40N:10S | 47.4 | 1.95 | 16.2 | - | - | - | 65 | 50 | ||||
2 | █ 40N:20S | 46.1 | 2.16 | 16.6 | - | - | - | 67.5 | 50 | ||||
2 | █ 40N:30S | 47.1 | 2.13 | 16.3 | 5.3 | 4.17 | 109 | 29 | 69 | 59 | 10.3 | 66.3 | 43.8 |
2 | █ 80N:0S | 45.5 | 2.45 | 17.9 | 5.3 | 3.89 | 119 | 13 | 81 | 41 | 9.65 | 66.3 | 42.5 |
2 | █ 80N:10S | 46.1 | 2.74 | 17 | - | - | - | 72.5 | 53.8 | ||||
2 | █ 80N:20S | 45.9 | 2.58 | 17.4 | - | - | - | 73.8 | 51.3 | ||||
2 | █ 80N:30S | 46.2 | 2.58 | 17.4 | 5.3 | 4.68 | 131 | 28 | 97 | 47 | 11.5 | 72.5 | 47.5 |
3 | █ 160N:0S | 42.9 | 2.42 | 20.3 | 5.3 | 3.79 | 179 | 13 | 103 | 30 | 11.51 | 81.3 | 60 |
3 | █ 160N:10S | 43 | 2.63 | 20.2 | - | - | - | 80 | 58.8 | ||||
3 | █ 160N:20S | 43.4 | 3.11 | 20.2 | 5 | - | - | 82.5 | 58.8 | ||||
3 | █ 160N:30S | 41.5 | 2.54 | 21.2 | - | 4.2 | 167 | 23 | 119 | 53 | 11.24 | 80 | 63.8 |
3 | █ 240N:0S | 41.9 | 2.96 | 20.8 | 5.3 | 4.4 | 175 | 15 | 130 | 26 | 10.35 | 77.5 | 57.5 |
3 | █ 240N:10S | 40.8 | 2.92 | 21.4 | - | - | - | 80 | 63.8 | ||||
4 | █ 240N:20S | 41.7 | 2.97 | 21.3 | - | - | - | 78.8 | 60 | ||||
4 | █ 240N:30S | 40 | 2.82 | 22.6 | 5 | 4.37 | 201 | 26 | 152 | 51 | 12.45 | 80 | 60 |
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Rainfall avg gsr (mm) | 270.4mm |
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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.