Stephen Davies (DAFWA)
Chloe Turner (Facey Group)
Compare changes in soil characteristics, including non-wetting and crop growth and performance in a mouldboard ploughed area versus untreated (control) area using an on-farm large scale demonstration site.
The trial showed a remarkable variance in frost damage and yield between the two treatments. There are a number of possible reasons why the mouldboard ploughed treatments had reduced frost damage. Firstly, overcoming topsoil water repellence can improve topsoil moisture content which allows for better transfer of heat into, and out of, the soil. Secondly, mouldboard ploughing can increase the overall yield potential which may include more and larger heads which could result in the frost damage being proportionally less. Further analysis is required to determine if this is the case. Thirdly it is possible that the crop on the ploughed soil flowered at a different time however this is unlikely given that this is the third season since ploughing was applied and that there were multiple frost events so avoidance is unlikely.
|Lead research organisation
|Host research organisation
Graeme Manton for hosting the trial site and Stephen Davies (DAFWA) for assisting in the planning and implementation of the trial. Support for this research was provided by DAFWA, Facey Group and GRDC through Project: DAW00244 “Delivering enhanced agronomic strategies for improved crop performance on water repellent soils in WA”.
|Other trial partners
|Cereal (Grain): Barley
|50m x 100m
90kg K Till, 70L Flexi N
Alpha Cypermethrin 120ml/ha
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.