Amanda Cook (SARDI)
|Contributor||SARDI Minnipa Agricultural Centre|
Hardy Hill Rd, SA
To assess barley grass weed seed capture by swathing and weed seed capture in chaff dumps after harvest, to determine how effective these practices can be in contributing towards an IWM program for barley grass on upper Eyre Peninsula.
|Lead research organisation||
SARDI Minnipa Agricultural Centre
|Host research organisation||N/A|
|Trial funding source||SAGIT S117|
This research was funded by SAGIT S117. Sincere thanks to SAGIT and their extremely valuable input into regional South Australian research and researchers. Thank you to Bruce Heddle for his inspiration, and for having the research and monitoring on his property.
|Other trial partners||Not specified|
At harvest in 2016, swathing was undertaken by Bruce Heddle in a Mace wheat crop sown at 50 kg/ha which was grazed early then allowed to recover for harvest. Samples were collected pre-harvest for weed assessment on 21 September 2016, and post-harvest soil and chaff samples were taken on 15 December 2016, to be assessed in weed seed trays. Due to the poor season and limited seed germination in 2017, the weed seed trays were also left during the 2018 season to further assess grass weed germination.
In-crop paddock monitoring for grass weed populations was undertaken and grass weeds were assessed at 10 GPS points along two transects for weed density, with six counts taken at each sample point.
|Sow date||Not specified|
|Harvest date||Not specified|
|Plot size||Not specified|
|Plot replication||Not specified|
|Rainfall avg ann (mm)||325mm|
|Rainfall avg gsr (mm)||241mm|
|Rainfall trial total (mm)||281mm|
|Rainfall trial gsr (mm)||155mm|
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.