Paul Breust (FarmLink Research) James Hunt (CSIRO) Guangdi Li (CSIRO) Richard Lowrie (Graham Centre) Mark Peoples (CSIRO) Antony Swan (CSIRO) Laura Watson (CSIRO)
Year(s)
2011
Contributor
FarmLink Research
Trial location(s)
Junee Reefs, NSW
Wagga Wagga, NSW
Aims
To compare the productivity and relative profitability of various low input/low risk cropping options with alternative high input/high risk, but potentially higher return crops.
Key messages
Results from experimentation undertaken in southern NSW in 2011 and 2012, have demonstrated that crop sequences which include a brassica or legume break crops can be as profitable as, and in many instances more profitable than, continuous wheat.
Canola was consistently the most profitable break crop option. However, the rotational benefits of canola were usually restricted to just the first subsequent wheat crop whereas additional wheat yields can occur for 2 years after a legume.
Growing pulses for grain maximises profit, particularly in favourable seasons, but compromises grass weed control and (depending upon species) reduces N available to subsequent crops compared to brown manuring.
Growing pulses for hay was found to be profitable across a range of season types, achieves excellent grass weed control and provides greater N inputs and higher carry-over of soil water than when the same crop is grown for grain.
Growing pules for brown manure loses money in the year they are grown, but achieves excellent grass weed control, high N inputs, residual carry-over of soil water, provides more ground cover, and requires less labour than when grown for hay or grain.
Lead research organisation
Commonwealth Scientific and Industrial Research Organisation
Host research organisation
FarmLink Research
Trial funding source
GRDC
Related program
N/A
Acknowledgments
We thank the GRDC for financial support. We are also indebted to Bernard Hart and Rob Hart at Junee Reefs for allowing us access to their land to establish on-farm experiemental trials, and NSW DPI (Dr Eric Armstrong), the Graham Centre (John Broster) and from Kalyx (Peter Hamblin) for provision of unpublished data.
late April (canola and lupins), mid May (lentil, chickpeas, peas, barley and wheat)
Harvest date
Not specified
Plot size
Not specified
Plot replication
4
Fertiliser
As per treatments in trial report.
Herbicide
Trifluralin was used as a pre-emergent for all treatments except the TT canola (low) which also had atrazine, and wheat (high) which used Boxer Gold. Chickpea had a particularly expensive PSPE application of terbuthylazine (Terbyne), isoxaflutole (Balance) and metribuzin. There were two in-crop glyphosate applications to the RR canola (high) and a single in-crop atrazine applied to TT canola (low).
Fungicide
Foliar fingicides were applied as Prosaro + Hasten to wheat (high), Tilt to barley, and two applications of Barrack to lentils and chickpea.
NOTE: Exact trial site locality unknown - Climate data may not be accurate
Wagga Wagga NSW
NOTE: Exact trial site locality unknown - Climate data may not be accurate
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
2011 trial report
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Related Final Reports By Author(s)
Paul D Breust, James Hunt, Guangdi Li, Richard Lowrie, Mark Peoples, Antony Swan, Laura Watson