Una Allender (HiFert) Wes Arnott (HiFert) Steve Holden (SFS) Andrew Speirs (HiFert)
Year(s)
2002
Contributor
Southern Farming Systems
Trial location(s)
Gnarwarre, VIC
Hamilton, VIC
Lake Bolac, VIC
Aims
To develop a phosphorus response curve for wheat in the high rainfall zone of South West Victoria.
Investigate responses to zinc and copper individually as well as in combination.
Evaluate several R and 0 products which may improve phosphorus and nitrogen efficiency.
Key messages
Phosphorus (P) responses were visual and evident from 3 leaf stage until the end of September with the 50 of P treatments being well ahead of the nil P.
The 15 P plots also were visibly behind.
There was a strong trend to increased yield with increasing rate of P applied, however this was not significant due to the high CV as a result of crown rot.
The zinc and copper cote treatments performed better than most treatments and were significantly better than the nil P treatment, but not significantly better than the straight 25 P treatment as DAP.
Grain proteins were lower than expected with a very high CV 13%, usually grain protein CV's are about 2 - 3% showing that there was a dramatic effect of possibly crown rot in the site.
The site had been in barley the year prior which is the best cereal host for carry over of crown rot and a dry finish makes the crown rot worse.
█
DAP Cu cote 2.5 % @ sowing and urea @ pre-sowing
14.17
4.364
13
█
Kellalac
█
DAP @ sowing and Urea @ pre-sowing
13.37
4.217
14
█
Kellalac
█
DAP RB1 @ sowing and Urea @ pre-sowing
13.6
3.947
15
█
Kellalac
█
Urea @ pre-sowing
14.1
1.794
Grain yield t/ha
Protein %
Climate
Derived climate information
No observed climate data available for this trial. Derived climate data is
determined from trial site location and national weather sources.
Gnarwarre VIC
Hamilton VIC
Lake Bolac VIC
Gnarwarre VIC
Hamilton VIC
NOTE: Exact trial site locality unknown - Climate data may not be accurate
Lake Bolac VIC
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.
Trial report and links
2002 trial report
2002 trial report
2002 trial report
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Una Allender, Wes Arnott, Steve Holden, Andrew Speirs